Abrégé

A method for evaluating reinforcement effect and efficiency of a filler on natural rubber based on particle size of bound rubber particles formed by the filler and natural rubber particle in a natural rubber latex, in which the natural rubber latex and the filler are mixed and diluted to obtain a to-be-detected emulsion, and an average particle size of bound rubber particles is measured using an instrument; a ratio of the average particle size to an average particle size of natural rubber particles in a pure rubber latex emulsion with the same concentration is calculated; the reinforcement effect of the filler on the natural rubber is evaluated based on the ratio; a function expression is established to derive a stress at definite elongation of various filler-modified natural rubber vulcanizates; and according to the function expression, the reinforcement efficiency of the filler on the natural rubber is evaluated.

Classes IPC  ?

• G01N 33/44 - RésinesMatières plastiquesCaoutchoucCuir
• G01N 15/02 - Recherche de la dimension ou de la distribution des dimensions des particules

Abrégé

An optimization method for molding mold and filling process of resin transfer molding (RTM) to form fiber fabric reinforced resin-based composite parts is provided. A simulation platform is used to simulate the mold filling process of RTM process. Brinkman equations are used to describe a flow of resin in fiber fabric. Numbers and positions, process parameters and material parameters of an injection gate and a discharging gate of the molding mold are set, and then the mold filling process is simulated. Darcy's law is utilized to determine a required time and a mold filling effect of the mold filling with the resin. Finally, a molding mold structure and the filling process of RTM to form fiber fabric reinforced resin-based composite part with high production efficiency and good quality are obtained.

Classes IPC  ?

• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
• B29C 70/48 - Façonnage ou imprégnation par compression pour la fabrication d'objets de longueur définie, c.-à-d. d'objets distincts utilisant des moules opposables, p. ex. pour déformer des préimprégnés [SMC] ou des "prepregs" avec une imprégnation des renforcements dans le moule fermé, p. ex. moulage par transfert de résine [RTM]
• B29C 70/54 - Parties constitutives, détails ou accessoiresOpérations auxiliaires
• B29K 63/00 - Utilisation de résines époxy comme matière de moulage
• B29K 223/00 - Utilisation de polyalcènes comme matière de renforcement

Abrégé

A method for integrally preparing urea-formaldehyde (UF)-based multi-nutrient biodegradable polymeric slow-release (SR) liquid and granular fertilizers is provided. A hydroxymethylurea solution is prepared, and a part of the hydroxymethylurea solution is added to a reactor for reaction to obtain the UF-based multi-nutrient biodegradable polymeric SR liquid fertilizer. The rest of the hydroxymethylurea solution is fed into a reaction-extrusion integrated machine for reactive extrusion to obtain a UF polymer through the polycondensation reaction, which is extruded, dried and granulated to obtain the UF-based multi-nutrient biodegradable polymeric SR granular fertilizer. A method for applying such liquid and granular fertilizers is also provided.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05B 1/00 - Superphosphates, c.-à-d. engrais produits par la réaction de phosphates minéraux ou d'os avec l'acide sulfurique ou l'acide phosphorique en proportions et concentrations telles qu'elles donnent directement des produits solides
• C05C 9/00 - Engrais contenant de l'urée ou ses composés
• C05D 1/00 - Engrais potassiques
• C05G 5/12 - Granulés ou flocons
• C05G 5/20 - Engrais liquides

Abrégé

An artificial intelligence (AI)-based method for non-contact measurement of sheet resistance of a conductive film material, in which a non-contact measurement method commonly used in the field of electromagnetic wave absorbing-materials is adopted to measure reflection loss data of a wave-absorbing structure Salisbury screen composed of a film material and a substrate; a program-controlled AI model is adopted to predict reflection losses of Salisbury screens with different sheet resistances; the sheet resistance is continuously adjusted, and the range is gradually narrowed to fit the measured reflection loss data; and the sheet resistance of the conductive film materials is inversely deduced.

Classes IPC  ?

• G06N 3/08 - Méthodes d'apprentissage

Abrégé

A thermal compensation design and implementation method for near-net-shape molding of a thermoset composite part based on temperature and curing degree fields is provided. A minimum symmetric unit model is established based on sizes of the part and a mold and ambient temperature. A curing kinetic model and a heat transfer model are established. A molding temperature curve is written into a subprogram. A simulated thermal compensation is performed on a region whose temperature is lower than a molding temperature with a difference of greater than or equal to 5% of the molding temperature until the temperature difference of individual regions is less than 5% of the molding temperature. The simulated thermal compensation is then performed on those regions with a curing degree less than or equal to 0.9. A thermal compensation device is assembled according to the thermal compensation scheme for experimental verification.

Classes IPC  ?

• G06F 30/10 - CAO géométrique
• B29C 35/02 - Chauffage ou durcissement, p. ex. réticulation ou vulcanisation
• B29C 70/54 - Parties constitutives, détails ou accessoiresOpérations auxiliaires
• B29K 63/00 - Utilisation de résines époxy comme matière de moulage
• B29K 105/08 - Présentation, forme ou état de la matière moulée contenant des agents de renforcement, charges ou inserts de grande longueur, p. ex. ficelles, mèches, mats, tissus ou fils
• B29K 307/04 - Carbone
• C08J 5/24 - Imprégnation de matériaux avec des prépolymères pouvant être polymérisés en place, p. ex. fabrication des "prepregs"
• G06F 119/08 - Analyse thermique ou optimisation thermique

Abrégé

A method for preparing a uniformly-cured solid loading tire from a high-modulus graphene oxide/natural rubber composite is provided. A high-modulus graphene oxide/carbon black/natural rubber mixture sheet and two high-viscosity graphene oxide/carbon black/natural rubber mixture sheets are prepared, where a weight ratio of graphene oxide to natural rubber to carbon black to an interface modifying agent to an anti-aging agent to an antioxidant to a vulcanization accelerator to an activator to a softener to a vulcanizing agent is 0.5-5:100:40-120:1-20:1-10:1-10:1-20:1-20:1-20:1-20. The high-modulus rubber mixture sheet is sandwiched between the two high-viscosity rubber mixture sheets to form a sandwich-structure rubber mixture laminate, which is then processed into a strip. The strip is wound along a surface of a hub of a loading wheel, and then the hub is transferred to a mold for vulcanization to obtain the desired tire.

Classes IPC  ?

• C08J 3/24 - Réticulation, p. ex. vulcanisation, de macromolécules
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
• C08J 3/205 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide
• C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères
• C08K 3/04 - Carbone
• C08K 3/22 - OxydesHydroxydes de métaux
• C08K 5/09 - Acides carboxyliquesLeurs sels métalliquesLeurs anhydrides
• C08K 5/18 - AminesComposés d'ammonium quaternaire avec des groupes amino liés aromatiquement
• C08K 5/47 - Thiazoles
• C08K 5/548 - Composés contenant du silicium contenant du soufre

Abrégé

A method for preparing a graphene-modified natural rubber (NR) with an interfacial interaction based on a free radical annihilation reaction is provided. In the process of reducing graphene oxide (GO), a free radical scavenger is loaded on a surface of reduced graphene oxide (rGO). An rGO-modified NR composite is prepared through aqueous synergistic aggregating precipitation process and mechanical blending. The free radical scavenger loaded on the rGO particles are capable of annihilating macromolecular free radicals generated by NR macromolecules due to an action of heat and/or force during the mixing and milling processes, an enhancement effect of the free radical annihilation reaction on an interfacial interaction between graphene and NR is great, so as to obtain a graphene-modified NR composite with improved strength and toughness.

Classes IPC  ?

• C08K 9/00 - Emploi d'ingrédients prétraités
• C08J 3/215 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide le polymère étant prémélangé avec une phase liquide au moins un additif étant également prémélangé avec une phase liquide
• C08L 7/02 - Latex

Abrégé

A lightweight absorption-transmission integrated metamaterial to electromagnetic waves with polarization stability and wide-incident-angle stability, which has a symmetric structure including at least one square frequency-selective structure-unit arranged periodically. The square frequency-selective structure-unit includes a first dielectric substrate, a metal array structure layer, a second dielectric substrate, a first carbon-based conductive film array structure layer, a third dielectric substrate, and a second carbon-based conductive film array structure layer, which are laminated in sequence with the first dielectric substrate as the bottom. A method for preparing such lightweight absorption-transmission metamaterial to electromagnetic waves is also provided.

Classes IPC  ?

• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques

Abrégé

An optimizing method for a molding process of a part made of a fiber-reinforced polymer composite is provided. A finite element method is adopted to perform thermochemical analysis of a macroscopic model of the part and thermomechanics analysis of a microscopic model of the part, so as to simulate temperature gradient, curing degree, and residual stress of the part during the molding process. A genetic algorithm is executed, with simultaneous minimization of temperature gradient, molding time, and residual stress as an optimization goal and a curing process curve as a parameter variable, to achieve the simultaneous multi-objective optimization of molding process parameters, so as to obtain an optimized molding process.

Classes IPC  ?

• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
• G06F 111/06 - Optimisation multi-objectif, p. ex. optimisation de Pareto utilisant le recuit simulé, les algorithmes de colonies de fourmis ou les algorithmes génétiques
• G06F 113/22 - Moulage
• G06F 113/26 - Composites
• G06F 119/08 - Analyse thermique ou optimisation thermique
• G06N 3/126 - Algorithmes évolutionnaires, p. ex. algorithmes génétiques ou programmation génétique

Abrégé

An high-velocity impact-resistant wave-transparent composite, including an upper composite layer, a lower composite layer, and a bio-inspired nacre-like toughening structure arranged therebetween. The toughening structure has a soft-hard alternating nacre-like structure, and is made from a low dielectric constant sheet material and a resin. The upper composite layer and the lower composite layer are each independently made of a fiber-reinforced resin composite, a foam material, or a honeycomb material. A preparation method of the high-velocity impact-resistant wave-transparent composite is further provided.

Classes IPC  ?

• B32B 5/24 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse
• B32B 5/02 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par les caractéristiques de structure d'une couche comprenant des fibres ou des filaments
• B32B 5/18 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par le fait qu'une des couches contient un matériau sous forme de mousse ou essentiellement poreux
• B32B 5/32 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses les deux couches étant sous forme de mousse ou essentiellement poreuses

Abrégé

The present invention relates to the technical field of nonmetallic compounds, and in particular to a reaction-extrusion preparation process and fertilization method for a weathered coal humic acid/urea-formaldehyde compound. In an alkaline environment, paraformaldehyde is depolymerized into formaldehyde small molecules and reacts with urea in a system to generate monomethylol urea and dimethylol urea. Then, under the strong shearing action of screws of a twin-screw reaction extruder, macromolecular weathered coal humic acid in the system is cracked into relatively small-molecular weathered coal humic acid to expose a large number of active groups of carboxyl, some of which are immediately subjected to dehydration-condensation reaction with amino on urea-formaldehyde molecules generated by polycondensation in the reaction-extrusion process in the system to generate a weathered coal humic acid/urea-formaldehyde compound, and particles of the weathered coal humic acid/urea-formaldehyde compound are obtained. The prepared compound particles have a high compressive strength, so that the breakage of fertilizer particles during storage, transportation and application can be avoided, and a fertilization and sowing integrated machine can be used to perform fertilization while sowing, thereby saving labor, time and fertilizers.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05G 5/12 - Granulés ou flocons
• B01J 2/20 - Procédés ou dispositifs pour la granulation de substances, en généralTraitement de matériaux particulaires leur permettant de s'écouler librement, en général, p. ex. en les rendant hydrophobes en exprimant une substance à travers un crible et fragmentation de l'extrudat
• A01C 21/00 - Méthodes de fertilisation

Abrégé

The present invention relates to the technical field of dielectric materials, and specifically relates to the microwave preparation and use of a single-metal-atom-doped reduced graphene oxide dielectric material. The preparation of the present invention comprises: adding an aqueous solution of a metal salt to an aqueous dispersion of graphene oxide to obtain a mixed solution, mechanically stirring same to enable the metal salt and the graphene oxide to sufficiently interact with each other, and uniformly loading metal ions in the mixed solution onto the surfaces of lamellas of the graphene oxide by means of the interaction between the metal ions and oxygen-containing functional groups of the graphene oxide; conducting freeze-drying, so as to obtain a metal salt/graphene oxide compound; and placing the metal salt/graphene oxide compound in a microwave oven, adding an initiator, and performing a reduction reaction, so as to obtain a single-metal-atom-doped reduced graphene oxide dielectric material. In the present invention, a solid-phase microwave reduction process is used, and the reduction effect can be effectively controlled without the generation of industrial waste liquid; therefore, the process is more environmentally friendly, and the product is purer.

Classes IPC  ?

• C01B 32/184 - Préparation
• B22F 9/20 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par un procédé chimique avec réduction de mélanges métalliques à partir de mélanges métalliques solides
• B22F 1/12 - Poudres métalliques contenant des particules non métalliques

Abrégé

It discloses an atmospheric polarized light orientation method using a solar azimuth region, provides an angle of polarization (AOP) vision-modulated model in a pixel frame, and gives an orientation strategy utilizing the solar azimuth region; a horizontal attitude angle is introduced into the AOP in the pixel frame, and orientation is implemented by utilizing a separation point and a principal point of photograph; specifically, a seed line extraction algorithm is given to update the solar azimuth in real time, a morphological expression and an AOP expression of the solar azimuth are fused for an optimum estimation to the solar azimuth, and ultimately the orientation is achieved by using an external sensor such as an inertial navigation system to input the horizontal attitude angle.

Classes IPC  ?

• G01C 21/02 - NavigationInstruments de navigation non prévus dans les groupes par des moyens astronomiques
• G06T 7/155 - DécoupageDétection de bords impliquant des opérateurs morphologiques
• G06T 7/187 - DécoupageDétection de bords impliquant des croissances de zonesDécoupageDétection de bords impliquant des fusions de zonesDécoupageDétection de bords impliquant un étiquetage de composantes connexes
• G06T 7/66 - Analyse des attributs géométriques des moments d'image ou du centre de gravité
• G06T 7/73 - Détermination de la position ou de l'orientation des objets ou des caméras utilisant des procédés basés sur les caractéristiques

Abrégé

An online monitoring device for internal defects in metal selective laser melting is proposed, the online monitoring device includes a metal selective laser melting system, a signal acquisition system, and a signal processing system, the metal selective laser melting system realizes a three-dimensional (3D) printing of metal members and prints metal members with different types or levels of defects; the signal acquisition system is connected with the metal selective laser melting system, and is configured to acquire an acoustic emission signal in the 3D printing process of the metal members; the signal processing system is connected with the signal acquisition system, and is configured to extract characteristic parameters, establish a machine learning model, and discriminate and classify unknown signals in a printing process through using the machine learning model, so as to realize online monitoring of internal defects in the metal selective laser melting system.

Classes IPC  ?

• B22F 10/80 - Acquisition ou traitement des données
• B33Y 50/00 - Acquisition ou traitement de données pour la fabrication additive
• G06T 7/00 - Analyse d'image
• G06V 10/764 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant la classification, p. ex. des objets vidéo
• G06V 10/778 - Apprentissage de profils actif, p. ex. apprentissage en ligne des caractéristiques d’images ou de vidéos

Abrégé

A device for controlling quality of wire arc additive forming through feedback of acoustic emission comprises a wire arc additive system, an acoustic emission acquisition and identification system, and a feedback control system. The wire arc additive system is configured for forming solid parts by a wire arc additive process. The acoustic emission acquisition and identification system is configured for monitoring the wire arc additive process online and analyzing types and sizes of any resulting defects. The feedback control system is configured for analyzing monitored results and providing timely feedback to the wire arc additive system via a PID circuit. When the resulting defects are small, the types and sizes of defects are analyzed, and an instruction of correcting process parameters is sent to the wire arc additive system. When the resulting defects are too large to be remedied, a shutdown instruction is sent to the wire arc additive system.

Classes IPC  ?

• B23K 31/12 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux relatifs à la recherche des propriétés, p. ex. de soudabilité, des matériaux
• B23K 9/04 - Soudage pour d'autres buts que l'assemblage de pièces, p. ex. soudage de rechargement
• B33Y 30/00 - Appareils pour la fabrication additiveLeurs parties constitutives ou accessoires à cet effet
• G01N 29/04 - Analyse de solides
• G01N 29/14 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet utilisant des techniques d'émission acoustique

Abrégé

Preparation of a long-life load-bearing tire made of natural rubber having undergone graphene/different-particle-size carbon black synergistic modification and vulcanization modification. Carbon black having different particle sizes is subjected to surface modification to prepare a graphene oxide/different-particle-size carbon black uniform dispersion liquid, a rubber master batch is then prepared by using a water-phase synergetic coagulation-sedimentation process, and the long-life load-bearing tire made of natural rubber having undergone graphene/different-particle-size carbon black synergistic modification and vulcanization modification is eventually obtained. The dispersion of a reinforcing filler in a rubber matrix is improved by utilizing a method of compounding graphene and carbon black having different particle sizes, thereby slowing down the aging failure of the load-bearing tire while improving the hardness and mechanical properties of the rubber; moreover, the crosslinked network structure of the rubber is adjusted by regulating and controlling the ratio of a vulcanizing agent to an accelerant, thereby enabling the rubber to have better mechanical properties while improving the heat generation and hardness thereof, and therefore the service life of the load-bearing tire made of natural rubber is further prolonged.

Classes IPC  ?

• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 9/02 - Ingrédients traités par des substances inorganiques
• C08K 9/08 - Ingrédients agglomérés par traitement avec un liant
• C08K 3/04 - Carbone
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
• B29D 30/02 - Bandages pleins
• B29B 7/00 - MélangeMalaxage

Abrégé

The application belongs to the technical field of signal acquisition, and discloses a stacked large-capacity signal acquisition and transmission system, which includes an adapter board, n acquisition boards, central control boards and a communication board sequentially laminated; where a circuit structure of each of the acquisition boards is the same; the adapter board is provided with circuit board interfaces and a plurality of first board-level connectors; an m-th acquisition board is provided with a signal acquisition and conditioning module, at least n−m+1 second board-level connectors and at least m third board-level connectors; the central control board is provided with a signal conversion module, at least one fourth board-level connector and at least one fifth board-level connector.

Classes IPC  ?

• H01R 31/06 - Pièces intermédiaires pour joindre deux pièces de couplage, p. ex. adaptateur
• H01R 13/646 - Détails de dispositifs de couplage des types couverts par les groupes ou spécialement adaptés à la haute fréquence, p. ex. structures procurant une adaptation d'impédance ou un accord de phase
• H01R 31/00 - Pièces de couplage supportées seulement par la coopération avec la pièce complémentaire
• H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission

Abrégé

A head propeller of the flying vehicle compresses incoming flow at a vehicle head inside an upper duct to a lower duct through an air suction channel. A portion of airflow is compressed to the lower duct through the air suction channel under an action of a guide plate and a vehicle body propeller. A bottom propeller of the flying vehicle compresses an airflow into pressure bins of the lower duct at a lower portion through the air suction channel. A sealing state of the pressure bins of the lower duct is destroyed. High-pressure airflow inside the lower duct is jetted out from an air outlet channel to the upper duct. A tail propeller guides the airflow to the tail portion of the vehicle body. The upper duct and the lower duct are constructed inside the pipeline, so a running resistance of the flying vehicle is reduced.

Classes IPC  ?

• B61B 13/08 - Systèmes à glissement ou à lévitation
• B60V 3/04 - Véhicules terrestres, p. ex. véhicules routiers utilisant concurremment des rails ou d'autres moyens de guidage, p. ex. avec coussin d'air entre le rail et le véhicule
• B61B 13/10 - Systèmes à tunnel

Abrégé

A lightweight, low-thickness, durable, and reliable multi-band radar stealth-bulletproof integrated metamaterial includes a ceramic layer, an ultrahigh molecular weight polyethylene (UHMWPE) fiber composite bulletproof layer, a graphene-based metamaterial filter layer, an UHMWPE fiber composite attenuation layer, and a carbon fiber composite reflective layer stacked in sequence. The two UHMWPE fiber composite layers are configured to attenuate radar waves. The circuit resonance of the graphene-based metamaterial filter layer is configured to generate a passband and a stopband simultaneously. The bulletproof layer and the attenuation layer are controlled by the graphene-based metamaterial filter layer in terms of working conditions in different radar frequency bands to establish a structure capable of generating λ/4 resonance at both low and high frequencies, so as to arrive at a stealth-bulletproof integrated metamaterial with small thickness and excellent dual-band radar wave absorption capability.

Classes IPC  ?

• B32B 9/00 - Produits stratifiés composés essentiellement d'une substance particulière non couverte par les groupes
• B32B 3/14 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche discontinue, c.-à-d. soit continue et percée de trous, soit réellement constituée d'éléments individuels caractérisés par une couche de surface formée d'éléments individuels
• B32B 9/04 - Produits stratifiés composés essentiellement d'une substance particulière non couverte par les groupes comprenant une telle substance comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique
• B32B 27/12 - Produits stratifiés composés essentiellement de résine synthétique adjacente à une couche fibreuse ou filamenteuse
• B32B 27/16 - Produits stratifiés composés essentiellement de résine synthétique spécialement traitée, p. ex. irradiée
• B32B 27/28 - Produits stratifiés composés essentiellement de résine synthétique comprenant des copolymères de résines synthétiques non complètement couverts par les sous-groupes suivants
• F41H 5/04 - Structure des plaques composées de plus d'une couche
• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques

Abrégé

The present invention relates to the technical field of composite materials and forming thereof, and specifically relates to an efficient and green method for preparing a polyether ether ketone composite material reinforced by nano-modified polyether arone sized fiber cloth. The method comprises: first, preparing a nano-modified polyether arone water-based sizing agent; sizing fiber cloth by using the sizing agent; and finally, preparing a polyether ether ketone composite material reinforced by the nano-modified polyether arone sized fiber cloth by means of a slurry method. The sizing agent is free of decomposition and failure with heat in a high-temperature forming process of the composite material; moreover, a polyether arone component in the sizing agent is similar to polyether ether ketone in structure and has good compatibility with same; anchor points with a mechanical locking effect are provided by means of the introduction of nanoparticles, such that fibers and a resin are connected together by means of the mechanical locking effect; in addition, a polyether ether ketone powder is dispersed into a cosolvent/water mixed solvent and then brushed onto the fiber cloth, and polyether ether ketone more easily infiltrates fiber bundles by means of a solution, such that an infiltration path of the melt resin is shortened, and the interface performance of the composite material is also improved to a certain extent.

Classes IPC  ?

• C08J 5/06 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes utilisant des matériaux fibreux prétraités
• C08L 61/16 - Polymères de condensation obtenus uniquement à partir d'aldéhydes ou de cétones avec des phénols des cétones avec les phénols
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 9/02 - Ingrédients traités par des substances inorganiques
• C08K 7/10 - Composés contenant du silicium

Abrégé

An efficient preparation method for a high-temperature-resistant wave-transmitting micro-nano multi-scale quartz fiber cloth reinforced thermoplastic composite material, comprising the following specific steps: first, uniformly dispersing low-dielectric nanoparticles and a micron high-temperature-resistant sizing polymer to obtain a sizing agent, and then carrying out ultrasonic immersion on quartz fiber cloth in the sizing agent, so that the surface of quartz fibers is coated with a composite sizing layer formed by the low-dielectric nanoparticles and the micron high-temperature-resistant polymer; dispersing the low-dielectric high-temperature-resistant nanoparticles into a high-temperature-resistant thermoplastic resin matrix by using a mechanical blending method; and finally compounding the modified quartz fibers and a thermoplastic resin to prepare the composite material. By synergistically modifying the quartz fiber cloth and the resin, a micro-nano multi-scale interface layer is formed on the interface of the composite material, thereby remarkably improving the comprehensive properties of the composite material such as mechanical properties, dielectric properties, and thermal properties; moreover, the preparation method is simple and efficient, involves low costs, and is free of environmental pollution.

Classes IPC  ?

• C08J 5/06 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes utilisant des matériaux fibreux prétraités
• C08K 3/34 - Composés contenant du silicium
• C08K 3/28 - Composés contenant de l'azote
• C08K 3/22 - OxydesHydroxydes de métaux
• C08L 61/16 - Polymères de condensation obtenus uniquement à partir d'aldéhydes ou de cétones avec des phénols des cétones avec les phénols
• C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide-acides ou précurseurs similaires de polyimides
• C08L 81/02 - Polythio-éthersPolythioéther-polyéthers
• C08L 81/06 - PolysulfonesPolyéthersulfones
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 9/02 - Ingrédients traités par des substances inorganiques
• C08K 9/06 - Ingrédients traités par des substances organiques par des composés contenant du silicium
• C08K 7/10 - Composés contenant du silicium

Abrégé

A lightweight, ballistic and blast-resistant multi-phase composite armor material based on a high-toughness heterogeneous interfacial layer, including a crack-arresting layer, a bullet-breaking layer, an energy-absorbing layer, and a support layer. The crack-arresting layer, the bullet-breaking layer, the energy-absorbing layer, and the support layer are stacked in sequence from a bullet-accepting side to the inside. Adjacent two layers are bonded with an adhesive film layer. The crack-arresting layer and the support layer are both made of a carbon fiber composite. The bullet-breaking layer is made of ceramic. The energy-absorbing layer is made of an ultra-high molecular weight polyethylene fiber composite. The adhesive film layer is made of a high-toughness heterogeneous interfacial adhesive.

Classes IPC  ?

• F41H 5/04 - Structure des plaques composées de plus d'une couche

Abrégé

The present invention relates to the technical field of functional composite materials, and in particular, to a lightweight, low-thickness, long-term reliable multi-band radar stealth and bulletproof integrated metamaterial, comprising a ceramic layer, an ultra-high molecular weight polyethylene (UHMWPE) fiber composite bulletproof layer, a graphene-based metamaterial filter layer, an ultra-high molecular weight polyethylene fiber composite loss layer, and a carbon fiber reflective layer that are sequentially stacked. By the use of the two ultra-high molecular weight polyethylene fiber resin composite layers as loss layers and the circuit resonance of the graphene-based metamaterial filter layer to produce passbands and stopbands, the present invention controls the working conditions of the ultra-high molecular weight polyethylene fiber resin composite layers in different radar wave frequency bands and thus establish a structure capable of producing a λ/4 resonance simultaneously at low and high frequencies, so as to give a stealth metastructure having the advantages of lightweight, a low thickness, and excellent absorption capability in dual frequency bands based on a bulletproof structure, thus achieving the effective synergy between bulletproof performance and radar stealth performance and maintaining the ability to address radar detection even after a certain degree of strike damage.

Classes IPC  ?

• H01Q 15/00 - Dispositifs pour la réflexion, la réfraction, la diffraction ou la polarisation des ondes rayonnées par une antenne, p. ex. dispositifs quasi optiques

Abrégé

The present invention belongs to the technical field of functional rubber composite materials, and particularly relates to a high-efficiency and low-cost preparation method for a high-graphene-content superfine natural rubber powder masterbatch and use. Firstly, a high-graphene-content superfine natural rubber powder masterbatch with a particle diameter lower than 5 μm is obtained by adopting a spray drying method easy for industrial production, and then the obtained high-graphene-content superfine natural rubber powder masterbatch is mixed with a natural rubber block, carbon black and the like by adopting a mechanical blending process to prepare a graphene-modified natural rubber nanocomposite material. The present invention utilizes the spray drying process to prepare the graphene-modified natural rubber superfine powder masterbatch, so that the time and energy consumption of dehydration and drying can be greatly reduced, and the production period is greatly shortened, thereby significantly reducing the cost of the graphene-modified natural rubber masterbatch, providing a new thought for the application of the graphene-modified natural rubber nanocomposite material in the tire industry, and also laying a foundation for green and environmentally friendly practices in the tire industry.

Classes IPC  ?

• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 3/04 - Carbone
• B29B 7/00 - MélangeMalaxage

Abrégé

The present invention relates to the technical field of non-metal compounds, particularly relates to the field of sustained-/controlled-releasing urea-formaldehyde chemical fertilizers, and particularly relates to a papermaking wood pulp byproduct sulfonated lignin/urea-formaldehyde fertilizer and a reactive extrusion granulation process. The process comprises mixing a hydroxymethylated sulfonated lignin solution and a hydroxymethylurea solution, then pumping same into a reactive extrusion all-in-one machine, reacting same until the system becomes viscous, then extruding same by a twin-screw extruder to obtain a strip-shaped product, drying same and then cutting same into granules to obtain papermaking wood pulp byproduct sulfonated lignin/urea-formaldehyde fertilizer columnar granules. With respect to the papermaking wood pulp byproduct sulfonated lignin/urea-formaldehyde fertilizer columnar granules prepared by the present invention, sulfonated lignin molecules are introduced onto the backbone of urea-formaldehyde macromolecules to reduce the degree of polymerization and the degree of crystallinity of the urea-formaldehyde fertilizer, so as to regulate the release rate of nitrogen nutrients in the fertilizer, thus solving the defect of slow nutrient release in later growth periods of crops of traditional urea-formaldehyde fertilizers, and widening the range of applicable crops of urea-formaldehyde fertilizers.

Classes IPC  ?

• C08H 7/00 - LignineLignine modifiéeProduits dérivés à haut poids moléculaire
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05G 5/12 - Granulés ou flocons
• B29B 9/06 - Fabrication de granulés par division de matière préformée sous forme de filaments, p. ex. combinée avec l'extrusion

Abrégé

222OH on the surface of the starch undergo a dehydration condensation reaction under acidic and high-temperature conditions to generate a urea formaldehyde/starch polycondensate having said structure. Compared with traditional urea formaldehyde fertilizer, after starch is introduced, the present invention greatly improves the mechanical performance of prepared urea formaldehyde fertilizer particles, achieves high particle strength, and facilitates subsequent storage, transportation, and application.

Classes IPC  ?

• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/90 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la nitrification des composés d’ammonium ou de l’urée dans le sol
• C05G 5/12 - Granulés ou flocons

Abrégé

An apparatus and method for real-time in-situ simultaneous measurement of temperature and mechanical parameters can include a charge type vibration sensing module having a temperature compensation function and a temperature/vibration coplanarly-integrated wireless surface acoustic wave (SAW) sensing module are controlled by a processing module in which a full-range temperature-vibration composite parameter compensation decoupling method is implanted, which can detect a vibration signal in a variable temperature environment. Moreover, temperature and vibration multi-parameter testing of static components in a high-temperature, narrow and closed environment can be implemented by arranging the charge type vibration sensing module having a temperature compensation function, and the temperature/vibration coplanarly-integrated wireless SAW sensing module implements health monitoring of moving components in a high-temperature and high-rotation environment.

Classes IPC  ?

• G01H 11/08 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores par détection des changements dans les propriétés électriques ou magnétiques par des moyens électriques utilisant des dispositifs piézo-électriques
• G01K 7/02 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments thermo-électriques, p. ex. des thermocouples
• G01K 11/26 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant la mesure d'effets acoustiques de fréquences de résonance

Abrégé

The present invention relates to a trace element-amino acid chelate/urea-formaldehyde slow-release fertilizer and a reactive extrusion preparation process therefor. Said slow-release fertilizer consists of a biodegradable urea-formaldehyde polymer and a trace element-amino acid chelate, wherein the macromolecular chain of the biodegradable urea-formaldehyde polymer interpenetrates into a cross-linked network structure of the molecular chain of the trace element-amino acid chelate, thereby the two structures forming a polymer composite having a semi-interpenetrating network structure. Said slow-release fertilizer solves the defect of a single nutrient in existing urea-formaldehyde slow-release nitrogen fertilizers and provides various nutrients for plant growth, and also can improve the utilization efficiency of nitrogen contained in urea-formaldehyde and introduced trace elements such as ferrum, copper and zinc. In addition, the reactive extrusion granulation process has the advantages of continuous large-scale production, low investment and low cost, no use of solvents harmful to human bodies and environment, simplified volatile matter removal and granulation processes for the polymer, high efficiency, uniform product performance and the like. Therefore, the present invention has good application prospects.

Classes IPC  ?

• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité

Abrégé

2 on the urea-formaldehyde molecule produced by the polycondensation of hydroxymethylurea during the reactive extrusion process to generate weathered coal-derived humic acid/urea-formaldehyde and its granules.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05F 11/02 - Autres engrais organiques à partir de tourbe, lignite ou autres dépôts végétaux similaires
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 5/12 - Granulés ou flocons

Abrégé

An efficient microwave-assisted preparation method with one-step simultaneous reduction/embedding of a metal monatomic-doped reduced graphene oxide dielectric material. A metal salt aqueous solution is added to a graphene oxide aqueous dispersion to obtain a mixed dispersion. The mixed dispersion is mechanically stirred, such that the metal salt fully interacts with the graphene oxide, and the metal ions are uniformly loaded on a surface of the graphene oxide sheets through the interaction between metal ions and the oxygen-containing functional groups of the graphene oxide. The mixed dispersion is freeze-dried to obtain a metal salt/graphene oxide complex, which is subjected to a microwave treatment in the presence of an initiator in a microwave oven to allow reduction to obtain the metal monatomic-doped reduced graphene oxide dielectric material. An application of the metal monatomic-doped reduced graphene oxide dielectric material is also provided.

Classes IPC  ?

• C01B 32/198 - Oxyde de graphène
• C01B 32/184 - Préparation

Abrégé

A sulfonated lignin as a by-product of papermaking wood pulp/urea-formaldehyde (UF) fertilizer and a method for preparing the same by a reactive extrusion and granulation process are provided. The method includes: mixing a hydroxymethylated sulfonated lignin solution with a hydroxymethyl-urea solution followed by feeding into a reaction-extrusion integrated machine and reaction at a preset temperature for a preset time; subjecting the reaction mixture to extrusion through a twin-screw extruder to obtain a strip product; and drying the strip product followed by granulation to obtain a sulfonated lignin as a by-product of papermaking wood pulp/UF fertilizer columnar particles. Sulfonated lignin molecules are introduced to the main chain of the UF macromolecules to reduce the polymerization degree and crystallinity of the UF fertilizer, so as to regulate the nitrogen release rate.

Classes IPC  ?

• C08H 7/00 - LignineLignine modifiéeProduits dérivés à haut poids moléculaire
• C05F 9/00 - Engrais fabriqués à partir des ordures ménagères ou de ville

Abrégé

Disclosed is a polarization fusion orientation method for an occluded environment, which comprises: acquiring a sky polarization image through a polarization camera first, then taking a heading angle output by an E-vector polarization orientation method as a state quantity, taking a heading angle output by a symmetry axis polarization orientation method as an observed quantity, realizing heading angle fusion through a multi-frequency variational Bayesian strong tracking cubature Kalman filter (MF-VBSTCKF), and respectively selecting different methods for a sampling position and a sampling interval period to update an optimal heading angle. The method solves the problem that high-precision and high-robustness heading angle measurement of polarized light cannot be realized in the occluded environment, can improve the precision and robustness of a polarized light orientation method in the occluded environment, and ensures high-frequency output of the heading angle at the same time.

Classes IPC  ?

• G01S 19/37 - Détails de matériel ou de logiciel de la chaîne de traitement des signaux
• G01S 19/39 - Détermination d'une solution de navigation au moyen des signaux émis par un système de positionnement satellitaire à radiophares le système de positionnement satellitaire à radiophares transmettant des messages horodatés, p. ex. GPS [Système de positionnement global], GLONASS [Système mondial de satellites de navigation] ou GALILEO

Abrégé

This disclosure relates to slow- and controlled-release fertilizers (S-CRF), and more particularly to a microelement amino acid chelate-urea formaldehyde (UF) slow-release fertilizer and a method for preparing the same by reactive extrusion. The microelement amino acid chelate-UF slow-release fertilizer includes a biodegradable UF polymer and a microelement amino acid chelate. The macromolecular chains of the biodegradable UF polymer interpenetrate in the cross-linked network structure of the chelate, so as to form a polymer composite with a semi-interpenetrating network structure.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 5/12 - Granulés ou flocons

Abrégé

A high wear-resistant graphene-modified natural rubber and a preparation thereof. The graphene-modified natural rubber is prepared from 100 parts by weight of a modified natural rubber blend, A parts by weight of modified graphene oxide, 35-65 parts by weight of wear-resistant carbon black, 5-20 parts by weight of a wear-resistant filler, 2-7 parts by weight of zinc oxide, 1-4 parts by weight of stearic acid, 1-4 parts by weight of poly(1,2-dihydro-2,2,4-trimethylquinoline), 1-4 parts by weight of N-isopropyl-N′-phenyl-p-phenylenediamine, 1-4 parts by weight of a vulcanization accelerator, 1-2 parts by weight of sulphur, 0.1-3 parts by weight of a compatibilizer and 1-7 parts by weight of rubber processing oil, where A is greater than 0 and equal to or less than 3.

Classes IPC  ?

• C08F 36/08 - Isoprène
• C08K 3/04 - Carbone
• C08K 3/22 - OxydesHydroxydes de métaux
• C08K 5/09 - Acides carboxyliquesLeurs sels métalliquesLeurs anhydrides
• C08K 5/3465 - Cycles à six chaînons condensés avec des carbocycles
• C08K 5/18 - AminesComposés d'ammonium quaternaire avec des groupes amino liés aromatiquement
• C08K 3/06 - Soufre
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 5/44 - Sulfénamides
• C08F 36/06 - Butadiène
• C08K 5/14 - Peroxydes
• C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères

Abrégé

The invention relates to the field of sensing technology, and discloses a double-parameter in-situ sensor based on waveguide grating, a sensing system and a preparation method. The sensor comprises an optical waveguide substrate, wherein a first straight optical waveguide and a second straight optical waveguide are arranged in the optical waveguide substrate in parallel, two ends of first straight optical waveguide are respectively connected with a first transmission fiber and a second transmission fiber, two ends of second straight optical waveguide are respectively connected with a third transmission fiber and a fourth transmission fiber, a first Bragg grating is arranged on the first straight optical waveguide, a second Bragg grating and a third Bragg grating are separately arranged on the second straight optical waveguide, a micro air groove is arranged on the upper surface of optical waveguide substrate, positioned between the second Bragg grating and the third Bragg grating.

Classes IPC  ?

• G02B 6/124 - Lentilles géodésiques ou réseaux intégrés
• G02B 6/02 - Fibres optiques avec revêtement
• G02B 6/12 - Guides de lumièreDétails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p. ex. des moyens de couplage du type guide d'ondes optiques du genre à circuit intégré

Abrégé

The present invention relates to the technical field of molds for plastic molding, and disclosed are a high-precision and high-efficiency injection mold for a high-aspect-ratio double-layer cylindrical part, and a molding method using same. The injection mold comprises a support base plate (1). A movable mold fixing frame (2) and a movable mold base plate (3) are sequentially mounted at the middle of a lower surface of the support base plate (1) by means of positioning screws (31). The center of an upper surface of the support base plate (1) is provided with a lower core mold accommodating cavity, which is adapted to mount a lower core mold (14). The lower core mold (14) is provided with a lower semicircular cavity (141), which is adapted to accommodate an outer die barrel (20); a right side of the lower semicircular cavity (141) is open, and a left side of the lower semicircular cavity is provided with a lower half cavity bottom (142); the lower half cavity bottom (142) is provided with a lower semicircular hole (143), which is adapted to accommodate an inner die rod (21), and an upper surface of the lower core mold (14) is provided with a positioning protrusion (144), a lower half feeding groove (145) and a remaining groove (146). The present invention has a rational design and has a good practical application value.

Classes IPC  ?

• B29C 45/26 - Moules
• B29C 45/33 - Moules comportant des éléments de moule transversalement mobiles, p. ex. radialement

Abrégé

A lightweight bulletproof and anti-explosion multiphase composite armor material based on a high-toughness heterogeneous interface layer and a bonding method. A main structure of the multiphase composite armor material comprises a carbon fiber composite material crack arrest layer (1), a ceramic bullet breaking layer (2), an ultra-high molecular weight polyethylene fiber composite material energy absorption layer (3) and a carbon fiber composite material support layer (4) which are sequentially arranged inwards from a bullet facing surface, and any two adjacent layers are bonded together by a high-toughness heterogeneous interface adhesive film layer (5). The problems of large density, serious back protrusion and insufficient continuous shooting resistance of a current bulletproof and anti-explosion armor material can be solved. According to the bonding method, the bonding strength of the heterogeneous interface can be effectively enhanced, and the critical energy release rate is increased; moreover, the protection level of the protective armor on the penetrative damage and the non-penetrative damage is improved. In addition to bulletproof and anti-explosion armors, the bonding method can be applied to a plurality of high-speed impact resistant structures such as high-speed train bodies, various aircraft shells, and individual soldier protection equipment.

Classes IPC  ?

• F41H 5/04 - Structure des plaques composées de plus d'une couche

Abrégé

A method for preparing graphene/natural rubber with simultaneously improved mechanical property, heat conduction and wear resistance, comprising: forming graphene oxide loaded with nano silicon dioxide by means of electrostatic interaction between silicon dioxide and graphene oxide; adding graphene oxide loaded with nano silicon dioxide into natural latex; preparing a graphene master batch by using an aqueous phase synergistic coagulation process; and obtaining graphene/natural rubber by means of a mechanical blending method and a vulcanization process. The electrostatic interaction between silicon dioxide and graphene oxide is a dynamic acting force which not only reinforces the crosslinked network structure of the graphene/natural rubber composite material and significantly increases the crosslinking density, but also enables the graphene filler to entangle a large amount of rubber molecular chains and enhances the interface interaction between the graphene and the rubber matrix in the dynamic movement process of the rubber, thereby improving the mechanical property, the heat conduction and the wear resistance simultaneously.

Classes IPC  ?

• C08J 3/24 - Réticulation, p. ex. vulcanisation, de macromolécules
• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 9/12 - Ingrédients adsorbés
• C08K 9/06 - Ingrédients traités par des substances organiques par des composés contenant du silicium
• C08K 3/36 - Silice
• C08K 3/04 - Carbone

Abrégé

A method for measuring surface temperature of a turbine blade includes following steps: step 1: cleaning a turbine blade and blowing dry; step 2: firstly, preparing a NiCrAlY (nickel-chromium-aluminum-yttrium) buffer layer and then preparing an YSZ (yttria-stabilized zirconia) insulating layer; step 3, preparing alumina sol; step 4, preparing an alumina insulating layer; step 5, preparing a strip-shaped platinum electrode layer; step 6, preparing a platinum-filled lead wire; step 7: firstly, connecting a platinum wire to a surface of a tail end of the strip-shaped platinum electrode layer, and then connecting a nickel-chromium alloy wire to a tenon end of the turbine blade; step 8, preparing alumina protective layers; and step 9, connecting two cold junctions of a thermocouple with a data collector.

Classes IPC  ?

• F01D 5/28 - Emploi de matériaux spécifiésMesures contre l'érosion ou la corrosion
• F01D 17/08 - Aménagement des éléments sensibles sensibles aux conditions de fonctionnement du fluide énergétique, p. ex. à la pression
• F01D 21/00 - Arrêt des "machines" ou machines motrices, p. ex. dispositifs d'urgenceDispositifs de régulation, de commande ou de sécurité non prévus ailleurs
• C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et

Abrégé

A device and a method for the industrialized continuous and simplified preparation of a urea-formaldehyde precise-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer. By means of various regulation and control means such as self-polycondensation of hydroxymethyl urea or copolycondensation of hydroxymethyl urea and a modifying molecule during the reactive extrusion process, an accurate regulation and control of the nutrient release rate of a urea-formaldehyde precise-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer is realized. The preparation device is simple and efficient, and the preparation method is stable and easy to control, which are convenient for achieving large-scale batch continuous production. In addition, the preparation system and method have good mobility, whereby a suitable modifying substance can be selected according to the growth cycles of different crops, so as to prepare a urea-formaldehyde precise-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer that is matched with the nutrient requirements of the whole crop growth cycle.

Classes IPC  ?

• B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
• B01J 4/00 - Dispositifs d'alimentationDispositifs de commande d'alimentation ou d'évacuation
• B01J 2/20 - Procédés ou dispositifs pour la granulation de substances, en généralTraitement de matériaux particulaires leur permettant de s'écouler librement, en général, p. ex. en les rendant hydrophobes en exprimant une substance à travers un crible et fragmentation de l'extrudat
• F26B 21/10 - Commande, p. ex. régulation des paramètres de l'alimentation en gaz de la températureCommande, p. ex. régulation des paramètres de l'alimentation en gaz de la pression
• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 5/12 - Granulés ou flocons

Abrégé

The present invention relates to the field of graphene preparation, and in particular to industrial continuous preparation equipment and process for graphene powder capable of being directly dispersed in an organic system, for use in obtaining the graphene powder capable of being directly dispersed in the organic system, which is composed of reduced graphene oxide and oil-soluble polymer micro-nano particles tightly coated on the reduced graphene oxide, wherein a part of the oil-soluble polymer micro-nano particles are, by means of a π-π conjugation effect, tightly combined with hexagonal honeycomb lattices formed by sp2 hybrid orbits in the reduced graphene oxide, and the other part of the oil-soluble polymer micro-nano particles are combined with oxygen-containing functional groups in the reduced graphene oxide by means of a covalent effect. On one hand, the surface of the reduced graphene oxide can be tightly coated with the oil-soluble polymer micro-nano particles, such that agglomeration of the reduced graphene oxide in a spray drying process is effectively prevented. On the other hand, the dried graphene powder can be easily dispersed after being transferred into the organic system, and the dispersion stability can be kept for a long time.

Classes IPC  ?

• B01F 33/82 - Combinaisons de mélangeurs dissemblables
• B01F 23/80 - Post-traitement du mélange
• B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
• C08F 120/14 - Esters méthyliques
• C08F 2/26 - Polymérisation en émulsion utilisant des agents émulsifiants anioniques

Abrégé

The present disclosure discloses a method for preparing large-size rare earth magnesium alloy with high-performance ingots by short process severe plastic deformation. When in use, the pushing cylinder moves upward, and the back pressure plate is adjusted to the outlet of the extrusion deformation area. After the male mold stroke is completed, the recoverable discard block fills the extrusion deformation area, and the upsetting extrusion deformation is completed. Then, the pushing cylinder drives the back pressure plate to remove from the lower part of the lower mold cavity downward, and the recoverable discard block has been broken due to the high pressure. Then, the extruded blank and residual block powder are taken out from the lower part of the lower mold cavity, restored into a plate shape for the next use. The present disclosure can solve the tail shrinking phenomenon, save materials and increase the strengthening effect.

Classes IPC  ?

• B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
• C22F 1/06 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du magnésium ou de ses alliages

Abrégé

A method for preparing a graphene-containing ultra-fine powdered natural rubber masterbatch, including: mixing a diluted graphene oxide dispersion with an anionic surfactant to obtain a modified graphene oxide dispersion; mixing the modified graphene oxide dispersion with a natural rubber latex suspension to obtain a mixed emulsion; and subjecting the mixed emulsion to spray drying to obtain the ultra-fine powdered natural rubber masterbatch with a particle size of less than 5 μm. This application further provides a method for preparing a graphene-modified natural rubber nanocomposite, including: mixing the ultra-fine powdered natural rubber masterbatch with natural rubber block, and carbon black.

Classes IPC  ?

• B01J 2/06 - Procédés ou dispositifs pour la granulation de substances, en généralTraitement de matériaux particulaires leur permettant de s'écouler librement, en général, p. ex. en les rendant hydrophobes par division du produit liquide en gouttelettes, p. ex. par pulvérisation, et solidification des gouttelettes en milieu liquide

Abrégé

2-GO/NR masterbatch is subjected to mechanical blending and vulcanization to obtain the graphene/NR composite.

Classes IPC  ?

• C08K 3/36 - Silice
• C08L 7/00 - Compositions contenant du caoutchouc naturel
• C08K 3/04 - Carbone

Abrégé

An injection mold for a high-aspect-ratio double-layer cylindrical plastic part and a molding method using the same. The injection mold includes a support base plate. A movable mold fixing frame and a movable mold base plate are arranged at the middle of a lower surface of the support base plate through positioning screws. A lower core mold is matchingly provided at a center of an upper surface of the support base plate, and is provided with a lower semicircular cavity for accommodating an outer die barrel. One side of the lower semicircular cavity is open, and the other side is provided with a first end wall which is provided with a lower semicircular notch for an inner die rod to pass through. An upper surface of the lower core mold is provided with a positioning protrusion, a lower feeding groove, and a remaining groove.

Classes IPC  ?

• B29C 45/26 - Moules
• B29C 45/16 - Fabrication d'objets multicouches ou polychromes
• B29C 45/73 - Chauffage ou refroidissement du moule
• B29L 9/00 - Produits stratifiés

Abrégé

A frequency measurement system and method of a radio frequency (RF) signal. The frequency measurement system includes: a magnetic field source module, a light source module, an excitation module, a complementary metal-oxide-semiconductor (CMOS) camera, and a signal processing module; the excitation module is disposed in the magnetic field; the excitation module is disposed on an output light path of the light source module; the CMOS camera is disposed on an output light path of the excitation module; and the CMOS camera is connected to the signal processing module; the light source module is configured to emit a laser; the CMOS camera is configured to capture an excitation image when the laser enters the excitation module to which a to-be-tested RF signal is applied; and the signal processing module is configured to determine a frequency of the to-be-tested RF signal according to the excitation image.

Classes IPC  ?

• G01R 29/08 - Mesure des caractéristiques du champ électromagnétique

Abrégé

The automatic identification hydrogen refueling system includes a ground positioning module, a hydrogen storage module, a mechanical arm, a refueling module, an automatic identification module and an information processing module. The ground positioning module is provided with a sensor. A hydrogen conveying pipeline is connected with the refueling module. The hydrogen storage module is arranged at a tail end of the ground positioning module, and connected with the mechanical arm, the information processing module and the hydrogen conveying pipeline. The information processing module controls the mechanical arm to drive the refueling module to preliminarily align a refueling connector after receiving a sensor signal. The automatic identification module identifies an accurate position of the refueling connector, the information processing module drives the mechanical arm to move until butting of the hydrogen refueling gun head and the refueling connector is completed, monitors and controls the refueling amount and the refueling pressure.

Classes IPC  ?

• B67D 7/04 - Appareils ou dispositifs pour transférer des liquides à partir de récipients ou de réservoirs de stockage en vrac vers des véhicules ou des récipients portables, p. ex. pour la vente au détail pour transférer des carburants, des lubrifiants ou leurs mélanges
• B67D 7/32 - Aménagements des dispositifs de sécurité ou d'alarmeMoyens pour empêcher un débit non autorisé du liquide

Abrégé

Disclosed in the present disclosure are a surface-acoustic-wave temperature and pressure sensing device and a manufacturing method thereof. The surface-acoustic-wave temperature and pressure sensing device includes a first high-temperature-resistant substrate and a second high-temperature-resistant substrate bonded together, where a recess is formed in the second high-temperature-resistant substrate to form a sealed cavity between the first high-temperature-resistant substrate and the second high-temperature-resistant substrate; first surface-acoustic-wave temperature sensors and surface-acoustic-wave pressure sensors are formed on a first surface of the first high-temperature-resistant substrate located in the cavity, and second surface-acoustic-wave temperature sensors are formed on a second surface of the first high-temperature-resistant substrate opposite the first surface; and the first surface-acoustic-wave temperature sensors, the second surface-acoustic-wave temperature sensors, and the surface-acoustic-wave pressure sensors are electrically connected to one another.

Classes IPC  ?

• G01K 11/26 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant la mesure d'effets acoustiques de fréquences de résonance
• G01D 21/02 - Mesure de plusieurs variables par des moyens non couverts par une seule autre sous-classe
• G01L 1/16 - Mesure des forces ou des contraintes, en général en utilisant les propriétés des dispositifs piézo-électriques
• G01L 11/04 - Mesure de la pression permanente, ou quasi permanente d'un fluide ou d'un matériau solide fluent par des moyens non prévus dans les groupes ou par des moyens acoustiques
• H03H 9/25 - Détails de réalisation de résonateurs utilisant des ondes acoustiques de surface
• H03H 9/02 - Réseaux comprenant des éléments électromécaniques ou électro-acoustiquesRésonateurs électromécaniques Détails

Abrégé

The present invention relates to the technical field of hydrogen fuel power generation, and relates specifically to a hydrogen fuel high-speed rotating magnetofluid power generation device. The device comprises a shaft portion, a cover plate portion, a thin plate portion and a combustion propelling portion. In the device, a hydrogen electrochemical reaction and unionized hydrogen direct combustion are ingeniously utilized, and jet thrust is provided for rotation while a hydrogen catalytic ionization reaction is completed. The advantage of the device is that same has higher efficiency than hydrogen fuel cells, and has high power density, which is suitable for high-power and high-energy power requirements; no key special assemblies are provided, and auxiliary systems such as heat dissipation are not required, breaking the current situation that hydrogen fuel cells are limited by proton exchange membranes and hydrogen internal combustion engines are limited by the low efficiency of a Carnot cycle.

Classes IPC  ?

• F01D 1/32 - "Machines" ou machines motrices à déplacement non positif, p. ex. turbines à vapeur avec transformation pression-vitesse exclusivement dans le rotor, p. ex. le rotor tournant sous l'action de jets issus de celui-ci
• F02C 3/16 - Ensembles fonctionnels de turbines à gaz caractérisés par l'utilisation de produits de combustion comme fluide de travail caractérisés par l'aménagement de la chambre de combustion dans l'ensemble les chambres de combustion étant formées au moins partiellement dans le rotor de la turbine
• F02K 7/00 - Ensembles fonctionnels dans lesquels le fluide de travail est utilisé uniquement sous forme de jet, c.-à-d. ensembles ne comportant ni turbine ni autre moteur entraînant un compresseur ou une soufflante carénéeLeur commande

Abrégé

The present disclosure discloses a surface acoustic wave temperature sensor and a manufacturing method thereof. The surface acoustic wave temperature sensor includes a sensing module and an antenna module electrically connected to each other. The antenna module includes a first high-temperature-resistant substrate and a patterned antenna formed on a surface of the first high-temperature-resistant substrate, a recess is formed in a first surface of the first high-temperature-resistant substrate, and the sensing module is fixed in the recess. The sensing module and the antenna module of the surface acoustic wave temperature sensor provided by the present disclosure form a whole. Therefore, compared with the prior art, the volume is greatly reduced, and wireless passive temperature monitoring in a high-temperature and narrow space can be better implemented. Moreover, the sensing module can be integrated in the antenna module, and such a structure is more convenient for batch processing.

Classes IPC  ?

• G01K 11/26 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant la mesure d'effets acoustiques de fréquences de résonance
• G03F 7/00 - Production par voie photomécanique, p. ex. photolithographique, de surfaces texturées, p. ex. surfaces impriméesMatériaux à cet effet, p. ex. comportant des photoréservesAppareillages spécialement adaptés à cet effet
• B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p. ex. pour former des outils à embouts rapportés

Abrégé

formaldehyde-based polymer composite is coated on a surface of the biodegradable polymer fabric, and is embedded in meshes of the biodegradable polymer fabric. There is intermolecular hydrogen-bond interaction between the biodegradable urea-formaldehyde-based polymer composite and the biodegradable polymer fabric.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 5/30 - Engrais caractérisés par leur forme en couches ou enrobés, p. ex. enrobages anti-poussière
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05G 1/00 - Mélanges d'engrais faisant partie individuellement de différentes sous-classes de
• C05B 7/00 - Engrais à base essentielle d'orthophosphates alcalins ou d'ammonium
• C09K 17/16 - Substances pour conditionner ou stabiliser les sols contenant uniquement des composés organiques appliqués sous une forme physique autre qu'une solution ou un coulis, p. ex. sous forme de plaquettes ou de granulés
• C09K 17/28 - Polymères de condensation urée-aldéhyde
• D06M 15/564 - Polyurées, polyuréthanes ou autres polymères comportant des liaisons uréide ou uréthaneLeurs précurseurs précondensés

Abrégé

Some embodiments of the disclosure provide a demodulation system for obtaining phase change parameters by a fiber-optic Fabry Perot sensor. In an embodiment, the demodulation system includes a transmitting module, a fiber-optic Fabry Perot sensor, a light splitting module, a filter module, a receiving module, and a processing module. The transmitting module transmits a beam with a predetermined wavelength range. The fiber-optic Fabry Perot sensor receives the beam and forms a reflected light beam. The light splitting module is arranged between the transmitting module and the fiber-optic Fabry Perot sensor. The filter module obtains the first light beam, the second light beam, and the third light beam. The filter module has a broadband filter. The receiving module receives the first light beam, the second light beam, and the third light beam and converts them into the first signal, the second signal, and the third signal.

Classes IPC  ?

• G01D 5/353 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens optiques, c.-à-d. utilisant de la lumière infrarouge, visible ou ultraviolette avec atténuation ou obturation complète ou partielle des rayons lumineux les rayons lumineux étant détectés par des cellules photo-électriques en modifiant les caractéristiques de transmission d'une fibre optique

Abrégé

A method for continuously preparing graphene powder directly dispersed in an organic system, including: mixing an aqueous graphene oxide dispersion, an emulsifier and an oil-soluble monomer followed by pH adjustment and dispersing to obtain a pre-emulsified dispersion; subjecting the pre-emulsified dispersion to an emulsion polymerization reaction in the presence of an initiator; introducing a reducing agent to reduce graphene oxide; and subjecting the reaction mixture after emulsion polymerization to spray drying to obtain the graphene powder. Equipment used in the preparation method is also provided herein.

Classes IPC  ?

• C08K 3/04 - Carbone
• C08F 120/14 - Esters méthyliques
• C08J 3/12 - Pulvérisation ou granulation
• C08J 3/205 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide

Abrégé

Some embodiments of the disclosure provides a method for preparing a sensing unit of a fiber-optic Fabry-Perot pressure sensor. The method includes the following steps. Preparing a first quartz sheet and a second quartz sheet, polishing the upper surface of the first quartz sheet, and polishing the upper surface of the second quartz sheet. Fabricating a plurality of grooves in the upper surface of the first quartz sheet. Fabricating through holes in the lower surface of the first quartz sheet, each of the through holes being coaxial with a corresponding groove and communicating with the corresponding groove. Combining the upper surface of the second quartz sheet with the upper surface of the first quartz sheet to form a laminated body. Cutting the plurality of grooves of the laminated body to obtain a plurality of sensing units.

Classes IPC  ?

• G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pressionTransmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent

Abrégé

A vulcanizing agent-modified graphene prepared through an in-situ chemical deposition process and a controllable crosslinked natural rubber composite containing the same. In the preparation of the vulcanizing agent-modified graphene, graphene oxide is coated on a spherical thermal-conductive functional particle through the chemical bonding to obtain a 3D graphene particle; and a vulcanizing agent is adsorbed on the 3D graphene particle through π-π conjugation by an in-situ chemical deposition process to obtain a vulcanizing agent-modified graphene particle. Further, the vulcanizing agent-modified graphene particle is mixed with natural rubber latex, and undergoes synergistic coagulation in water to form a graphene masterbatch, which is further processed into the controllable crosslinked natural rubber composite by adding a certain amount of natural rubber block, rubber additive and reinforcing filler.

Classes IPC  ?

• C08K 3/04 - Carbone
• C08K 9/06 - Ingrédients traités par des substances organiques par des composés contenant du silicium
• C08K 3/06 - Soufre
• C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition

Abrégé

The present invention relates to biodegradable polymers, particularly to a method for converting biodegradable polymers into humus with a low release amount of CO2 and use thereof. A composite material system is formed from the biodegradable polymers and the materials that can slowly release nutrient nitrogen or nutrients nitrogen and phosphorus, in which the mass ratio of carbon to nitrogen in the composite material system is (1-35):1. The materials of the present invention can promote the biodegradable polymers to be converted into soil humus or compost humus, rather than to be converted into greenhouse gas CO2, which is to be emitted into the atmosphere. Therefore, the method is of great significance for energy conservation and emission reduction, green and efficient utilization of biodegradable polymers and efficient and green utilization of biodegradable polymers wastes.

Classes IPC  ?

• C05F 11/00 - Autres engrais organiques
• B09B 3/00 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif
• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde

Abrégé

A rotary ultrasonic grinding machine tool, comprising a rotary ultrasonic grinding spindle (1), an ultrasonic power transmission device (2), a spindle clamping and lifting device (3), and a part clamping and feeding device (4), wherein the rotary ultrasonic grinding spindle (1) comprises a grinding wheel (101) mounted at an output end of an amplitude transformer (103); a mandrel at a large end of the amplitude transformer (103) extends into a hollow sleeve (106) to be connected to an output end face of a transducer (107); the transducer (107) is connected to an inner surface of the hollow sleeve (106) in a transition fitting manner by means of a positioning flange (109); the hollow sleeve (106) is mounted in a supporting base (102); and a tail end of the hollow sleeve (106) is connected to an electric spindle (112) by means of a coupler (111). Further comprised is a method for using the rotary ultrasonic grinding machine tool. The rotary ultrasonic grinding spindle is directly driven by the electric spindle, thereby improving the grinding efficiency, reducing the grinding force and grinding heat, and improving the part machining quality.

Classes IPC  ?

• B24B 1/04 - Procédés de meulage ou de polissageUtilisation d'équipements auxiliaires en relation avec ces procédés en soumettant les outils de meulage ou de polissage, les produits de meulage ou de polissage ou les pièces à des vibrations, p. ex. meulage en fréquence ultrasonore
• B24B 41/06 - Supports de pièces, p. ex. lunettes réglables
• B24B 41/04 - PoupéesArbres porte-meulesCaractéristiques s'y rapportant
• B24B 47/20 - Entraînement ou transmission des machines ou dispositifs à meulerÉquipement à cet effet liés au mouvement d'avance

Abrégé

This disclosure relates to slow- and controlled-release fertilizers, and more particularly to a device and a method for industrialized continuous and simplified preparing a urea-formaldehyde slow-release nitrogen fertilizer or a urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer. Hydroxymethylurea is produced through the reaction extrusion of urea and formaldehyde. Through the self-ploycondensation of the hydroxymethylurea or the co-polymerization of the hydroxymethylurea and a modifier in a reactive extruder, the urea-formaldehyde slow-release nitrogen fertilizer or the urea-formaldehyde-based slow- and controlled-release multi-nutrient fertilizer is prepared.

Classes IPC  ?

• C05C 9/00 - Engrais contenant de l'urée ou ses composés
• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 5/12 - Granulés ou flocons

Abrégé

The present disclosure relates to a thermal-acoustic-vibration three-parameter integrated in-situ sensor and system with a high-temperature-resistant and high-pressure-resistant structure. The provided thermal-acoustic-vibration three-parameter integrated in-situ sensor with a high-temperature-resistant and high-pressure-resistant structure comprises a heat detection device, a sound detection device and a vibration detection device; and the sound detection device and the vibration detection device are distributed on two sides of the heat detection device. When heat, sound and vibration need to be detected, only spectra of light signals emitted by the heat detection device, the sound detection device and the vibration detection device need to be obtained, and heat information, sound information and vibration information to be detected are obtained through the corresponding relation between the spectra of the optical signals emitted by the heat detection device, the sound detection device and the vibration detection device and heat information, sound information and vibration information to be detected.

Classes IPC  ?

• G01H 17/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores non prévue dans les autres groupes de la présente sous-classe

Abrégé

A method of producing a thermoplastic starch by an in-situ reactive extrusion plasticization process and a method for preparing a starch/polymer blend by an in-situ reactive extrusion plasticization and compatibilization process. In the method, a plasticizer reaction precursor (or a plasticizing compatibilizer reaction precursor) is mixed with starch to adhere to the surface of the starch or enter the starch to break the intermolecular and intramolecular hydrogen bonds of the starch. Then a mixture of the plasticizer reaction precursor (or the plasticizing compatibilizer reaction precursor) and starch is subjected to extrusion to produce the thermoplastic starch (or the starch/polymer blend), where the reaction precursor undergoes an in-situ reaction on the surfaces of the starch and in the starch to form a macro-molecular plasticizer (or a plasticizing compatibilizer) to plasticize starch or provide plasticizing and compatibilizing effect on the starch/polymer blend.

Classes IPC  ?

• C08J 3/18 - Plastification de composés macromoléculaires
• C08J 3/00 - Procédés pour le traitement de substances macromoléculaires ou la formation de mélanges

Abrégé

A method for preparing a graphene masterbatch by an aqueous phase synergistic aggregating precipitating process and a method for molding a long-lifespan tire for a loading wheel of a heavy-duty vehicle. In this application, a graphene oxide aqueous dispersion and natural rubber latex are taken as raw materials, and subjected to co-precipitating in a water medium to prepare a high-graphene content masterbatch with individual components evenly dispersed. The graphene masterbatch is further subjected to two-stage high-temperature mechanical blending with a natural rubber block to achieve the uniform dispersion of graphene in a rubber composites.

Classes IPC  ?

• C08K 3/04 - Carbone
• C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères

Abrégé

Disclosed is a method for preparing a nitrogen-rich or nutritious straw-based slow-release fertilizer through In-Situ straw modification/reactive extrusion integrated continuous process. In the method, the liquid reaction precursor of a nitrogen-containing biodegradable slow-release fertilizer is mixed with crop straw to obtain a reaction mixture, or the liquid reaction precursor of a nitrogen-containing biodegradable slow-release fertilizer, crop straw and a soluble fertilizer are mixed to obtain a reaction mixture. The reaction mixture is subjected to extrusion in a screw extruder to produce the nitrogen-rich or nutritious straw-based slow-release fertilizer.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité

Abrégé

The present invention discloses a highly efficient and environment-friendly reactive extrusion integrated continuous preparation process for a biodegradable polymeric multi-nutrient elements nano slow/controlled-release fertilizer and a biodegradable polymeric multi-nutrient elements nano slow/controlled-release fertilizer prepared by the process consisting of urea-formaldehyde macromolecular chains and nano-phosphate. Firstly preparing a methylolurea solution, and then feeding the same into a reactive extrusion integrated machine, adding a phosphate, starting the reaction unit of the reactive extrusion integrated machine to carry out the reaction, and simultaneously starting the vacuumizing devolatilization apparatus to remove moisture from the reaction system; after completing the reaction, starting the extrusion unit of the reactive extrusion integrated machine, extruding to obtain a strip-shaped product, and drying and granulating the same to obtain a finished product. The present invention can achieve forced discharge of the output end of the reaction unit by integrating the extrusion unit and the reaction unit, thereby realizing continuous production of the biodegradable polymeric multi-nutrient nano slow/controlled-release fertilizer. The biodegradable polymeric multi-nutrient nano slow/controlled-release fertilizer prepared by the present invention is firmly bonded between macromolecular chains of urea-formaldehyde through hydrogen bonding, which could impart excellent slow-release performances to nitrogen, phosphorus, potassium and other medium and trace elements; thereby the nutrient use efficiency of the fertilizer is greatly improved.

Classes IPC  ?

• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05C 9/00 - Engrais contenant de l'urée ou ses composés
• C05B 7/00 - Engrais à base essentielle d'orthophosphates alcalins ou d'ammonium
• C05G 1/00 - Mélanges d'engrais faisant partie individuellement de différentes sous-classes de

Abrégé

A system for simultaneously and microscopically measuring vapor cell coating film energy transfer and relaxation characteristics at nanometer scales includes a space relaxation characteristic detection unit which includes a laser, an optical isolator, a spatial light filter, a reflector, a Glan-Taylor polarizer, a first quarter-wave plate, a spatial light modulator, a focusing lens, a second quarter-wave plate, a polarizing film, a PD detection unit, an I/V amplification unit, a data acquisition unit, a spectroscope and an optical chopper, an atomic force microscope detection unit for energy transfer micro-areas, a shielding cylinder, a coated alkali metal atomic vapor cell, a data processing unit and a magnetic field controlled coil. The energy transfer micro-area detection unit includes coated samples, a probe, an oscillator, a laser, a four-quadrant photoelectric detection unit, a band-pass filter unit, an automatic gain controller, an adder, a piezoelectric scanning cylinder, a sample table and a PI controller.

Classes IPC  ?

• G01Q 60/24 - Microscopie à forces atomiques AFM [Atomic Force Microscopy] ou appareils à cet effet, p. ex. sondes AFM
• G01N 21/01 - Dispositions ou appareils pour faciliter la recherche optique
• G01N 21/84 - Systèmes spécialement adaptés à des applications particulières

Abrégé

A ducted fan device integrated with a permanent magnet synchronous disc-type flat wire electric motor, comprising a rotor system, a stator system, an intake/exhaust control system, a detection system, a drive system and a power supply system. The stator system comprises an electric motor housing (5). Upper and lower end faces of an inner wall of the electric motor housing (5) are each provided with a flat wire coil (4), and the flat wire coils (4) on the end faces are connected in series. The rotor system is arranged inside the stator system, and the rotor system comprises axial and radial composite integrated blades (1) and permanent magnets (3). The permanent magnets (3) replace a portion of centrifugal fan blades and are located on the outside. The detection system is electrically connected to the electric motor housing (5) and the power supply system. The drive system is electrically connected to the flat wire coils (4) and the power supply system. The detection system is electrically connected to the drive system. The present device implements the suspension and high-speed rotation of the rotor system, omits a bearing mechanism, reduces weight, reduces mechanical wear and noise, prolongs the service life, and reduces costs.

Classes IPC  ?

• H02K 21/14 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant à l'intérieur des induits
• H02K 1/27 - Noyaux rotoriques à aimants permanents
• H02N 15/00 - Dispositifs de maintien ou de lévitation utilisant l'attraction ou la répulsion magnétique, non prévus ailleurs
• F04D 25/08 - Ensembles comprenant des pompes et leurs moyens d'entraînement le fluide énergétique étant l'air, p. ex. pour la ventilation

Abrégé

2 absorption vessel connected in sequence through connecting pipes. A top of the hollow leaching device is provided with an end cover. An external water distributor filled with a leaching solution and a mechanical stirring device is arranged above the end cover. The external water distributor is in communication with an inner cavity of the hollow leaching device through a pipeline. A stirring shaft of the mechanical stirring device extends into the inner cavity. A stirring shaft is provided with a stirring paddle.

Classes IPC  ?

• G01N 33/44 - RésinesMatières plastiquesCaoutchoucCuir
• G01N 1/24 - Dispositifs d'aspiration
• G01N 1/38 - Dilution, dispersion ou mélange des échantillons
• C12M 1/00 - Appareillage pour l'enzymologie ou la microbiologie
• C12M 1/02 - Appareillage pour l'enzymologie ou la microbiologie avec des moyens d'agitationAppareillage pour l'enzymologie ou la microbiologie avec des moyens d'échange de chaleur
• C12M 1/12 - Appareillage pour l'enzymologie ou la microbiologie avec des moyens de stérilisation, filtration ou dialyse
• C12M 1/04 - Appareillage pour l'enzymologie ou la microbiologie avec des moyens d'introduction de gaz

Abrégé

A large-field-of-view high-resolution imaging device includes an imaging array formed by splicing and combining a plurality of imaging units and a CSI phosphor screen. Each imaging unit is formed by coupling an array of light cones in series and an enhanced CCD. The series light cone array is formed by connecting a large light cone and a small light cone in series such that a small end face of the large light cone is connected with a large end face of the small light cone, a large end face of the large light cone is attached to the CSI phosphor screen, and a small end face of the small light cone serves as an input window of an image enhancer. The enhanced CCD is formed by coupling the image enhancer and a CCD camera. A photosensitive screen of the CCD camera serves as an output window of the image enhancer.

Classes IPC  ?

• H04N 23/55 - Pièces optiques spécialement adaptées aux capteurs d'images électroniquesLeur montage
• G03B 42/02 - Production d'enregistrements en utilisant d'autres ondes que des ondes optiquesVisualisation de ces enregistrements en utilisant des moyens optiques en utilisant des rayons X
• H04N 23/54 - Montage de tubes analyseurs, de capteurs d'images électroniques, de bobines de déviation ou de focalisation
• H04N 25/60 - Traitement du bruit, p. ex. détection, correction, réduction ou élimination du bruit

Abrégé

A gradient electrically conductive-uniform thermally conductive dual network structure-based electromagnetic shielding polymer composite with low reflection and high absorption and a preparation method thereof. The electromagnetic shielding polymer composite includes a gradient conductive carbon nanotube network with a vertically oriented cell structure and a uniformly thermally conductive hexagonal boron nitride/carbon nanotube network constructed by the hexagonal boron nitride dispersed uniformly in the carbon nanotube network and the gradient carbon nanotube network. The gradient electrically conductive carbon nanotube network and the uniformly thermally conductive hexagonal boron nitride/carbon nanotube network form a composite synergistic dual function network structure so as to make the electromagnetic shielding polymer composite have a low reflection and high absorption and excellent thermal conductivity.

Classes IPC  ?

• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques
• C08K 3/04 - Carbone
• C08K 3/38 - Composés contenant du bore
• B29C 39/00 - Moulage par coulée, c.-à-d. en introduisant la matière à mouler dans un moule ou entre des surfaces enveloppantes sans pression significative de moulageAppareils à cet effet
• C08K 9/00 - Emploi d'ingrédients prétraités
• C08L 75/04 - Polyuréthanes
• C08L 83/06 - Polysiloxanes contenant du silicium lié à des groupes contenant de l'oxygène
• B29K 75/00 - Utilisation de polyurées ou de polyuréthanes comme matière de moulage
• B29K 83/00 - Utilisation de polymères contenant dans la chaîne principale uniquement du silicium avec ou sans soufre, azote, oxygène ou carbone comme matière de moulage
• B82Y 30/00 - Nanotechnologie pour matériaux ou science des surfaces, p. ex. nanocomposites
• B82Y 40/00 - Fabrication ou traitement des nanostructures

Abrégé

The present disclosure provides a cuboid magnetometer with high fluorescence collection efficiency, used for cardiac magnetic field measurement, and based on nitrogen-vacancy (NV) centers in diamond, and a cardiac magnetic field measurement system. The cardiac magnetic field measurement system includes a magnetic shielding chamber, a non-magnetic bed, an array probe for cardiac magnetic field measurement, a three-axis displacement platform, a high-speed data collection card, a fiber laser source, a microwave source, and a computer. The array probe for cardiac magnetic field measurement includes a non-magnetic shell, a stepping motor, a porous rotary fiber coupling apparatus, a fiber bundle set, a special photodetector (PD) set, a filter set, a ring-shaped antenna, and special diamond.

Classes IPC  ?

• A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
• A61B 5/243 - Détection de champs biomagnétiques, p. ex. de champs magnétiques produits par des courants bioélectriques spécialement adaptée aux signaux magnétocardiographiques [MCG]
• A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
• G01N 21/64 - FluorescencePhosphorescence

Abrégé

The disclosure provides a method for preparing a multiple-material variable-rigidity component by efficient collaborative additive manufacturing, relates to the technical field of additive manufacturing. In the disclosure, the method comprises: pretreating a component structure model and dividing the component structure model into a lightweight part with complex pore structures and a solid part that needs to be manufactured rapidly; preparing the lightweight part by a selective laser melting prototyping; performing a surface treatment on the prepared lightweight part to obtain a treated lightweight part; preparing the solid part on the treated lightweight part by a wire arc additive manufacturing, to obtain a component.

Classes IPC  ?

• B23K 26/348 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en combinaison avec du soudage ou du découpage couvert par les groupes , p. ex. en combinaison avec le soudage par résistance en combinaison avec du soudage à l'arc, p. ex. en atmosphère inerte avec électrode tungstène [TIG], en atmosphère inerte avec électrode métal [MIG] ou du soudage plasma
• B33Y 10/00 - Procédés de fabrication additive
• B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
• B23K 26/342 - Soudage de rechargement
• B23K 26/60 - Traitement préliminaire
• B33Y 40/20 - Posttraitement, p. ex. durcissement, revêtement ou polissage
• B22F 10/85 - Acquisition ou traitement des données pour la commande ou la régulation de procédés de fabrication additive
• B22F 10/50 - Traitement des pièces ou des articles pendant leur formation, p. ex. traitements appliqués aux couches fusionnées pendant leur formation
• B22F 10/28 - Fusion sur lit de poudre, p. ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
• B23K 9/04 - Soudage pour d'autres buts que l'assemblage de pièces, p. ex. soudage de rechargement
• B23K 37/02 - Chariots pour supporter l'outillage pour souder ou découper

Abrégé

A system of automatic adjustment of a laser reflection path, comprising a central processing device, a driving device, a four-quadrant photodetector, a driving arm, a micro cantilever, a sample, a sample placing table, a light reflector, a laser, a CCD equipped with an optical microscope, a vibration sensor, a signal processing circuit, a display device, a storage device, and a control device; a system of automatic adjustment of the laser reflection path is controlled by the control device, wherein a laser beam is emitted by the laser, an image collected by the CCD equipped with the optical microscope is processed by the central processing device to identify the micro cantilever, and then a driving arm is driven by a driving device to drive the micro cantilever to move to the center of a laser spot, during which vibration signals of the driving arm are also under monitoring.

Classes IPC  ?

• G02B 21/00 - Microscopes
• G02B 21/02 - Objectifs
• G02B 21/36 - Microscopes aménagés pour la photographie ou la projection

Abrégé

The invention relates to the field of preparing biodegradable polymer slow/controlled release composite, in particular to a biodegradable polymer slow/controlled release binary composite urea-formaldehyde/poly(butylene succinate) and a biodegradable polymer slow/controlled release ternary nanocomposite urea-formaldehyde/poly(butylene succinate)/potassium dihydrogen phosphate. The following steps are included: uniformly mixing two components poly(butylene succinate) and methylol-urea or three components poly(butylene succinate), methylol-urea and potassium dihydrogen phosphate, and then extruding the resulting mixture by an extruder, and the biodegradable polymer slow/controlled release composite urea-formaldehyde/poly(butylene succinate) containing nutrient N and the biodegradable polymer slow/controlled release nanocomposite urea-formaldehyde/poly(butylene succinate)/potassium dihydrogen phosphate containing nutrients of N, P and K are obtained respectively. As one of the raw materials, methylol-urea, the precursor of urea-formaldehyde, can react by way of melt polycondensation to form urea-formaldehyde macromolecular chains with different polymerization degrees at high temperature in the extruder, which are dispersed among the PBS macromolecular chains, thereby obtaining the composite UF/PBS of the present invention; and the hindering effect of the molecular segments of urea-formaldehyde and poly(butylene succinate) and the hydrogen bond interaction between the components result in that potassium dihydrogen phosphate crystals dissolved in the water produced by the polycondensation reaction are restricted to nanoscale during their precipitation process, so as to prepare nanocomposite UF/PBS/MKP. The prepared composites all have excellent mechanical properties, and can be directly used as a biodegradable polymer slow/controlled release fertilizer, or as a matrix polymer to prepare other types of slow release fertilizers, and the formulae with high PBS contents can also replace PBS to prepare other agricultural implements, such as agricultural films, nursery pots and vegetation nets.

Classes IPC  ?

• C08F 283/02 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polymères prévus par la sous-classe sur des polycarbonates ou des polyesters saturés
• C08G 71/02 - Polyurées

Abrégé

Disclosed is a large-field-of-view high-resolution imaging device, comprising: an imaging array formed by splicing and combining a plurality of imaging units, and a CsI fluorescent screen. Each imaging unit is formed by coupling a series light cone array and an enhanced CCD; the series light cone array is used for conducting a light signal and is formed by connecting a large light cone and a small light cone in series, a small end surface of the large light cone is connected to a large end surface of the small light cone in series, and the large end surface of the large light cone is attached to the CsI fluorescent screen; the small end surface of the small light cone is used as an input window of an image enhancer; the enhanced CCD is formed by coupling the image enhancer and a CCD camera; the image enhancer is used for increasing detection efficiency and improving image brightness and contrast; the CCD camera is used for converting an optical signal into an electric signal and storing imaging information in the form of a digital signal; and a photosensitive screen of the CCD camera is used as an output window of the image enhancer.

Classes IPC  ?

• H04N 5/225 - Caméras de télévision
• H04N 5/217 - Circuits pour la suppression ou la diminution de perturbations, p.ex. moiré ou halo lors de la production des signaux d'image
• G03B 42/02 - Production d'enregistrements en utilisant d'autres ondes que des ondes optiquesVisualisation de ces enregistrements en utilisant des moyens optiques en utilisant des rayons X

Abrégé

The present disclosure provides an extrusion forming die for a cabin component. The extrusion forming die for a cabin component comprises an upper die assembly, a lower die assembly and a combined concave die. The upper die assembly comprises an extrusion punch (3), and the combined concave die comprises an M-shaped outer concave die (4) having a hollow cavity matched with the extrusion punch (3), and a W-shaped inner concave die (5) having a rotary cavity. The W-shaped inner concave die (5) is arranged in the rotary cavity of the M-shaped outer concave die (4) in a matched manner, and the rotary cavity and the hollow cavity are matched to form a rotary extrusion die cavity (18) with a W-shaped longitudinal section.

Classes IPC  ?

• B21C 23/18 - Fabrication de produits non revêtus par extrusion par percussion
• B21C 25/02 - Matrices

Abrégé

The present disclosure provides a rotary extrusion forming method for a cabin section workpiece, comprising the following steps of: first preparing a hollow truncated cone-shaped blank; heating the prepared blank to a molding temperature and holding, and preheating a female die and a male die to above the molding temperature and holding; assembling an upper die assembly on a press; applying lubricant on the female die and the male die, and placing and fixing the blank into a die cavity of the female die; starting up a rotation driving device to drive the female die to rotate on a lower die base, so that the female die drives the blank to rotate; starting up the press to make the male die move down to a machining position of the blank in the female die cavity through the upper die assembly, and machining inner side walls of the blank.

Classes IPC  ?

• B21C 25/08 - Matrices ou mandrins à ouverture variable pendant l'extrusion, p. ex. pour faire des pièces coniquesCommande de l'ouverture
• B21C 23/14 - Fabrication d'autres produits

Abrégé

Provided are an ion thruster and method for fabrication thereof, the ion thruster fabrication method comprising: a plurality of prefabricated ceramic tiles (p) are stacked and laminated to form a front part (51); a plurality of prefabricated ceramic tiles (p) are stacked and laminated to form a rear part (B); assembling the front part (51) and the rear part (B) in a sintering mold, the front part (51) fitting closely with a tapered part (b1) of the rear part (B); placing a main cathode (1) into a cathode hole (k1) on the front part, and filling the cathode hole (k1) with a ceramic slurry to fix the main cathode (1); placing the sintering mold in a heating furnace for sintering. The ion thruster employs a modular processing method; when each module is manufactured, a method of stacking a plurality of prefabricated ceramic tiles (p) together and laminating them is used; the invention has the advantages of a simple process and low cost, and the fabricated ion thruster is small in size and has good high-temperature resistance.

Classes IPC  ?

• F03H 1/00 - Utilisation du plasma pour produire une poussée propulsive par réaction

Abrégé

Disclosed is a magnetic photoacoustic composite non destructive testing device for a power transmission line of a photovoltaic grid based on a corona effect. The device may include a mechanical structure part and a data processing part. The mechanical structure part may include a shielding shell and mounting bases, shielding bodies are mounted on two sides of the shielding shell, a top of the shielding shell is provided with an upper cover, two sides under the upper cover are provided with the mounting base respectively, and the two mounting bases are located above the shielding bodies respectively. The data processing part may include a pair of optical sensing modules, a pair of magnetic sensing modules, an acoustic sensing module, a humidity sensing module, a micro-processor, a signal conditioning and transmission unit and an internal power supply management module.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux

Abrégé

A pressure-sensitive chip, a pressure sensor, and a pressure monitoring system. In an embodiment, a pressure-sensitive chip and a signal processing module are packaged to form a pressure sensor. The pressure sensor and a display instrument are connected to form a pressure monitoring system. A pressure-sensitive chip is a ceramic body made of eight green ceramic sheets by stacking and sintering, and includes two capacitors. In another embodiment, a pressure signal of a measurement area is obtained by a method including the following steps: sensing a pressure in a measurement area by the pressure-sensitive chip; generating a capacitance signal by the pressure-sensitive chip; converting the capacitance signal to a voltage signal by the signal processing module; and converting the voltage signal into the pressure signal by the display instrument.

Classes IPC  ?

• G01L 9/00 - Mesure de la pression permanente, ou quasi permanente d’un fluide ou d’un matériau solide fluent par des éléments électriques ou magnétiques sensibles à la pressionTransmission ou indication par des moyens électriques ou magnétiques du déplacement des éléments mécaniques sensibles à la pression, utilisés pour mesurer la pression permanente ou quasi permanente d’un fluide ou d’un matériau solide fluent
• G01L 19/00 - Détails ou accessoires des appareils pour la mesure de la pression permanente ou quasi permanente d'un milieu fluent dans la mesure où ces détails ou accessoires ne sont pas particuliers à des types particuliers de manomètres

Abrégé

A multi-parameter surface acoustic wave sensing device and a manufacturing method therefor. The multi-parameter surface acoustic wave sensing device comprises a high-temperature-resistance piezoelectric crystal substrate (1), and a first resonator (2), a second resonator (3) and a third resonator (4) provided away from one another; a cantilever beam (11) and a sealed cavity (12) are formed on the high-temperature-resistance piezoelectric crystal substrate (1), and the high-temperature-resistance piezoelectric crystal substrate (1) has a flat first surface (S1) and an opposite second surface (S2); the first resonator (2) is formed on the first surface (S1) corresponding to the cantilever beam (11) and used for sensing a vibration parameter; the second resonator (3) is formed on the first surface (S1) corresponding to the cavity (12) and used for sensing a pressure parameter; the third resonator (4) is formed on the first surface (S1) and used for sensing a temperature parameter; response antennas (5) are formed on the second surface (S2), and the response antennas (5) are electrically connected to the first resonator (2), the second resonator (3), and the third resonator (4). The multi-parameter surface acoustic wave sensing device can be used for parameter measurement in a plurality of positions such as engine combustors, aircraft and spacecraft surfaces, engines, and aircraft wings.

Classes IPC  ?

• G01D 5/48 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens à base de radiation d'ondes ou de particules
• G01M 15/05 - Test des moteurs à combustion interne par contrôle combiné d'au moins deux paramètres différents des moteurs
• G01K 11/26 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant la mesure d'effets acoustiques de fréquences de résonance
• G01L 1/16 - Mesure des forces ou des contraintes, en général en utilisant les propriétés des dispositifs piézo-électriques

Abrégé

The present invention relates to a method of semi-solid indirect squeeze casting for Mg-based composite material, which aims at improving the mechanical property of the cast by adding magnesium zinc yttrium quasicrystal of high hardness, high elastic modulus and excellent matrix binding property acting as the reinforcement into the magnesium alloy matrix and manufacturing the cast through smelting using a vacuum atmosphere smelting furnace, agitating with ultrasonic wave assisted vibration in the rotating impeller jet agitation furnace and indirect squeeze casting against the problem of poor wettability, easy agglomeration, inhomogeneous distribution between the reinforcement particles and the matrix materials and poor properties of the manufactured cast. The manufacturing method of the present invention has advanced technologies and detailed and accurate data. The cast has excellent microstructure compactness, no shrinkage cavities and shrinkage defects and the primary phase in the metallographic structure consists of spherical and near-spherical crystalline grains, wherein dendritic crystalline grains almost disappear and the size of the crystalline grain is obviously refined. The tensile strength of the Mg-based composite material cast reaches to 225 Mpa, the elongation rate thereof reaches to 6.5% and the hardness thereof reaches to 86 HV. So the manufacturing method of the present invention is an advanced semi-solid indirect squeeze casting method for the Mg-based composite material.

Classes IPC  ?

• B22D 18/02 - Coulée avec pression, utilisant des dispositifs presseurs mécaniques, p. ex. matriçage semi-liquide
• B22D 21/00 - Coulée de métaux non ferreux ou de composés métalliques, dans la mesure où leurs propriétés métallurgiques affectent le procédé de couléeUtilisation de compositions appropriées
• C22C 1/02 - Fabrication des alliages non ferreux par fusion
• C22C 1/10 - Alliages contenant des composants non métalliques
• C22C 23/00 - Alliages à base de magnésium

Abrégé

Some embodiments of the disclosure provide an optical fiber Fabry-Perot sensor (1), and a manufacturing method thereof. According to an embodiment, the optical fiber Fabry-Perot sensor (1) includes a hollow tube body (10), a first optical fiber (20), and a second optical fiber (30). The hollow tube body (10) has a first tube body (11), a cavity portion (12), and a second tube body (13) sequentially arranged in an axial direction. The first optical fiber (20) is provided within the first tube body (11) in the axial direction and has a first light guide end face (21) provided within the cavity portion (12). The second optical fiber (30) is provided in the second tube body (13) in the axial direction and has a second light guide end face (31) provided within the cavity portion (12).

Classes IPC  ?

• G01L 1/24 - Mesure des forces ou des contraintes, en général en mesurant les variations des propriétés optiques du matériau quand il est soumis à une contrainte, p. ex. par l'analyse des contraintes par photo-élasticité
• G01L 11/02 - Mesure de la pression permanente, ou quasi permanente d'un fluide ou d'un matériau solide fluent par des moyens non prévus dans les groupes ou par des moyens optiques
• G02B 6/38 - Moyens de couplage mécaniques ayant des moyens d'assemblage fibre à fibre

Abrégé

The present invention relates to the technical field of film heat-flow sensors, and provides a 3D direct-writing aluminum oxide ceramic film heat-flow sensor and a manufacturing method therefor having high potential signal and sensitivity and short response time and capable of stably working in a high temperature environment to realize stable reading of a thermoelectric potential signal. The technical solution is as follows: a 3D direct-writing aluminum oxide ceramic film heat-flow sensor comprises an upper temperature gradient isolation layer, an upper thermocouple pile, a positive lead-out electrode, a connector, a micron-order ceramic substrate, a lower thermocouple pile, a negative lead-out electrode, and a lower temperature gradient isolation layer. The upper thermocouple pile generated by 3D printing is formed on the upper surface of the micron-order ceramic substrate. The upper thermocouple pile is coated with the upper temperature gradient isolation layer. The lower thermocouple pile generated by 3D printing is formed on the lower surface of the micron-order ceramic substrate. The lower thermocouple pile is coated with the lower temperature gradient isolation layer. The present invention can be applied to the field of temperature gradient measurement.

Classes IPC  ?

• G01K 17/20 - Mesure d'une quantité de chaleur transportée par des milieux en écoulement, p. ex. dans les systèmes de chauffage basée sur la mesure d'une différence de température de part et d'autre d'une surface radiante, combinée avec une détermination du coefficient de transmission de la chaleur
• G01K 7/02 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments thermo-électriques, p. ex. des thermocouples

Abrégé

The invention relates to the field of slow/controlled release fertilizer, in particular to a urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer and a preparation method thereof. The urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer comprises ammonium polyphosphate, inorganic silica gel and urea-formaldehyde, wherein the phosphorus-oxygen double bond of ammonium polyphosphate can at least form hydrogen bond linkage with a urea-formaldehyde molecule chain, the hydroxyl group of the inorganic silica gel can at least form hydrogen bond linkage with the urea-formaldehyde molecular chain, and ammonium polyphosphate, inorganic silica gel and urea-formaldehyde together form a hydrogen bond associated polymer network structure. The invention can prepare a urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer comprising a strong hydrogen bond network structure by using a conventional aqueous solution polymerization in combination with a normal temperature extrusion granulation process, avoiding the coating process in the latter stage of the preparation of a coated fertilizer, achieving a simple and effective preparation process, and saving a lot of manpower and material resources. The urea-formaldehyde-based multi-nutrient slow/controlled release fertilizer provided by the invention can stably and continuously release nitrogen nutrient throughout the release period, thereby making up for the shortcoming of excessively long nutrient release period of the existing urea-formaldehyde fertilizers.

Classes IPC  ?

• C05B 7/00 - Engrais à base essentielle d'orthophosphates alcalins ou d'ammonium
• C05B 13/00 - Engrais produits par grillage des matières phosphatées
• C05C 9/02 - Engrais contenant de l'urée ou ses composés contenant des produits de condensation uréeformaldéhyde
• C05B 19/00 - Granulation ou pastillage des engrais phosphatés autres que les scories
• A01C 21/00 - Méthodes de fertilisation
• C05G 5/12 - Granulés ou flocons
• A01G 22/20 - Céréales
• A01G 22/22 - Riz
• A01G 22/00 - Culture de plantes spécifiques non prévue ailleurs

Abrégé

An optical fiber Fabry-Perot sensor (1), and a manufacturing method thereof. The optical fiber Fabry-Perot sensor (1) comprises: a hollow tubular member (10) having a first tubular member (11), a cavity portion (12), and a second tubular member (13) sequentially arranged in an axial direction; a first optical fiber (20) provided within the first tubular member (11) in the axial direction, the first optical fiber (20) having a first light-transmitting end surface (21) provided within the cavity portion (12); and a second optical fiber (30) provided in the second tubular member (13) in the axial direction and having a second light-transmitting end surface (31) provided within the cavity portion (12), wherein the first light-transmitting end surface (30) and the second light-transmitting end surface (31) are spaced apart by a pre-determined distance and opposingly arranged, and the inner diameter of the cavity portion (12) is greater than the diameter of any one of the first tubular member (11) and the second tubular member (13).

Classes IPC  ?

• G01L 1/24 - Mesure des forces ou des contraintes, en général en mesurant les variations des propriétés optiques du matériau quand il est soumis à une contrainte, p. ex. par l'analyse des contraintes par photo-élasticité
• G01B 11/16 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la déformation dans un solide, p. ex. indicateur optique de déformation
• G01L 11/02 - Mesure de la pression permanente, ou quasi permanente d'un fluide ou d'un matériau solide fluent par des moyens non prévus dans les groupes ou par des moyens optiques

Abrégé

This disclosure relates to water-absorbing and slow/controlled release fertilizer, in particular to a water-absorbing and water-retaining multi-nutrient biodegradable polymeric slow/controlled release fertilizer having a semi-interpenetrating network structure, and preparation methods thereof. The method can comprises the steps of: reacting formaldehyde with urea to obtain a hydroxymethyl urea solution; adding acrylic acid and acrylamide monomers into another reactor, and adding a KOH solution to adjust the neutralization degree of acrylic acid, then adding one of inorganic clay, pretreated crop straw or cellulose, then adding initiator, monopotassium phosphate and the prepared hydroxymethyl urea solution sequentially; allowing to react at temperature after being mixed uniformly to obtain a viscous product; and granulating the viscous product and oven drying the same to obtain the fertilizer. The fertilizer prepared according to the present invention has strong water-absorbing and water-retaining capacity, and an excellent slow release performance for nitrogen, phosphorus and potassium contained as nutrients.

Classes IPC  ?

• C05G 5/40 - Engrais insérés dans une matrice
• C09K 17/22 - PolyacrylatesPolyméthacrylates
• C09K 17/28 - Polymères de condensation urée-aldéhyde
• C05G 3/40 - Mélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur le dosage de l’engrais ou sur sa vitesse de libérationMélanges d'un ou plusieurs engrais avec des additifs n'ayant pas une activité spécifique d'engrais pour influer sur la solubilité
• C05G 3/80 - Conditionneurs de sol
• C05B 7/00 - Engrais à base essentielle d'orthophosphates alcalins ou d'ammonium
• C08F 292/00 - Composés macromoléculaires obtenus par polymérisation de monomères sur des substances inorganiques
• C05B 19/00 - Granulation ou pastillage des engrais phosphatés autres que les scories
• C08F 251/02 - Composés macromoléculaires obtenus par polymérisation de monomères sur des polysaccharides ou leurs dérivés sur la cellulose ou ses dérivés
• C05B 17/00 - Autres engrais phosphatés, p. ex. phosphates naturels, os verts

Abrégé

A method for manufacturing a quasicrystal and alumina mixture particles reinforced magnesium matrix composite, includes manufacturing a quasicrystal and alumina mixture particles reinforcement phase, including preparing raw materials for the quasicrystal and alumina mixture particles reinforcement phase including a pure magnesium ingot, a pure zinc ingot, a magnesium-yttrium alloy in which the content of yttrium is 25% by weight, and nanometer alumina particles, the elements having the following proportion by weight 40 parts of magnesium, 50-60 parts of zinc, 5-10 parts of yttrium and 8-20 parts of nanometer alumina particles of which the diameter is 20-30 nm, pretreating the metal raw materials, cutting the pure magnesium ingot, the pure zinc ingot and the magnesium-yttrium alloy into blocks, removing oxides attached on the surface of each metal block, placing the blocks into a resistance furnace to preheat at 180° C. to 200° C., and filtering out the absolute ethyl alcohol after standing, and drying.

Classes IPC  ?

• C22C 1/02 - Fabrication des alliages non ferreux par fusion
• B22D 1/00 - Traitement des métaux en fusion dans la poche ou dans les chenaux de coulée avant le moulage
• C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p. ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
• C22C 23/02 - Alliages à base de magnésium avec l'aluminium comme second constituant majeur
• B22D 21/00 - Coulée de métaux non ferreux ou de composés métalliques, dans la mesure où leurs propriétés métallurgiques affectent le procédé de couléeUtilisation de compositions appropriées
• B22D 29/04 - Manutention ou démoulage des pièces ou des lingots
• B22D 27/00 - Traitement du métal dans le moule pendant qu'il est liquide ou plastique
• B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p. ex. par broyage, meulage ou écrasement à la meule
• C22C 1/10 - Alliages contenant des composants non métalliques
• B22D 7/00 - Coulée de lingots

Abrégé

A special-purpose die for shaping an aluminum-magnesium alloy by rotating extrusion is provided, including a male die and a female die, wherein a trapezoidally-sectioned groove is formed at an end portion of a working area of the male die, an inner portion of the male die is hollow, with the hollow inner portion having sections of equal area, a circumferential wall of a die cavity of the female die is provided with at least two symmetrical axial grooves, and a cavity is formed inside a clamping part of the female die. The present disclosure remarkably reduces the axial extrusion force such that the deformation of the formed workpiece is more uniform, which greatly improves the mechanical property of the formed workpiece.

Classes IPC  ?

• B21C 25/02 - Matrices
• B21C 29/04 - Refroidissement ou chauffage des produits extrudés ou des parties de la presse d'extrusion des têtes de presses, des filières, ou des mandrins
• B21C 23/00 - Extrusion des métauxExtrusion par percussion
• B21C 29/00 - Refroidissement ou chauffage des produits extrudés ou des parties de la presse d'extrusion
• B21C 23/08 - Fabrication de fils, de barres, de tubes
• B21C 25/04 - Mandrins
• B21C 23/20 - Fabrication de produits non revêtus par extrusion inversée

Abrégé

Provided is a method of forming a cup-shaped aluminum-magnesium-alloy article by rotary extrusion, including the following steps. (1) Blanking. (2) Performing rotary extrusion: placing a cylindrical billet into a concave die cavity, wherein a peripheral wall of the cavity of the concave die is provided with at least two symmetrical axial grooves; inserting a convex die into the concave die cavity, wherein an end of a working region of the convex die is provided with a groove of a trapezoidal cross section; subjecting the convex die to forward extrusion and heating, and simultaneously rotating and heating the concave die, wherein an integral torque is formed during the extrusion process of the convex die by using the cylindrical billet inside the groove having a trapezoidal cross section, and wherein a synchronized rotation with the concave die is achieved by using a metallic billet that flows into the axial groove. (3) Demolding.

Classes IPC  ?

• B21C 23/14 - Fabrication d'autres produits
• B21C 25/02 - Matrices
• B21C 25/08 - Matrices ou mandrins à ouverture variable pendant l'extrusion, p. ex. pour faire des pièces coniquesCommande de l'ouverture
• B21C 29/04 - Refroidissement ou chauffage des produits extrudés ou des parties de la presse d'extrusion des têtes de presses, des filières, ou des mandrins
• B21C 23/21 - Presses spécialement adaptées à l'extrusion du métal

Abrégé

The invention discloses a Selective Laser Melting forming device for multiple metal powder materials. Technical solutions adopted are as follows: a collector container, a build cylinder and a feed container are provided on a lower portion of a process chamber; leveling oil cylinders for the substrate are mounted in the build cylinder; a recoater bracket in the process chamber is slidably mounted on a slide rail; a recoater is fixed on a lower portion of the recoater bracket; a compaction roller is simultaneously mounted on the recoater bracket; a stress sensor is provided under the compaction roller; an electron microscope for collecting the porosity of the spread powder and the product and a melting pool monitoring Charge Coupled Device camera; a laser scanning system, a directional heating laser system and an alarm device are provided on a top portion of the process chamber.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
• B23K 26/082 - Systèmes de balayage, c.-à-d. des dispositifs comportant un mouvement relatif entre le faisceau laser et la tête du laser
• B23K 26/144 - Travail par rayon laser, p. ex. soudage, découpage ou perçage en utilisant un écoulement de fluide, p. ex. un jet de gaz, associé au faisceau laserBuses à cet effet l'écoulement de fluide contenant des particules, p. ex. de la poudre
• B23K 26/342 - Soudage de rechargement
• B22F 3/00 - Fabrication de pièces ou d'objets à partir de poudres métalliques, caractérisée par le mode de compactage ou de frittageAppareils spécialement adaptés à cet effet
• B22F 3/105 - Frittage seul en utilisant un courant électrique, un rayonnement laser ou un plasma
• B33Y 30/00 - Appareils pour la fabrication additiveLeurs parties constitutives ou accessoires à cet effet
• B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive

Abrégé

The present invention discloses a rotary extrusion producing method for producing an inner ring rib with a large aspect ratio formed of a hollow billet, which includes: combining, at an initial stage of rotary extrusion, two convex dies together and driving, by a slider on a press machine, left and right half convex dies to extrude a blank downward to form an initial profile of a transverse rib; dragging respectively, by left and right horizontal hydraulic cylinders, the left and right half convex dies to move in a radial direction, to form an initial cylindrical wall, so as to achieve a purpose of forming the transverse rib, once the blank is extruded downward by a certain depth, where a head of a mandrel is set to be at a certain conical degree, and a certain number of processed pits are distributed on an inner cavity of a concave die.

Classes IPC  ?

• B21C 23/20 - Fabrication de produits non revêtus par extrusion inversée
• B21C 23/08 - Fabrication de fils, de barres, de tubes

Abrégé

The present invention discloses a rotary extrusion producing mold for producing an inner ring rib with a large aspect ratio formed of a hollow billet, which consists of a concave die, a left half convex die, a right half convex die, a mandrel, a lower core support and an elastic supporting mechanism, the left and right half convex dies are fixed onto an upper template connected with a slider and a horizontal hydraulic cylinder, a left drive hydraulic cylinder and a right drive hydraulic cylinder are mounted at both ends of the upper template, respectively, the lower core support passes through a middle of the concave die, the elastic supporting mechanism is mounted at a bottom of the lower core support, a drive gear is mounted on a side face of the concave die, and the mandrel is disposed between the left and right half convex dies.

Classes IPC  ?

• B21C 25/08 - Matrices ou mandrins à ouverture variable pendant l'extrusion, p. ex. pour faire des pièces coniquesCommande de l'ouverture
• B21C 23/20 - Fabrication de produits non revêtus par extrusion inversée
• B21C 25/02 - Matrices
• B21C 25/04 - Mandrins

Abrégé

The present disclosure relates to the technical field of deep hole machining, particularly to a rear-mounted deep hole machining on-line detection and deviating correction device, which provide solution to the difficulty in observing the machining site and correcting the cutter deviation in deep hole machining. The device comprises a cutter bar provided with a plurality of iron blocks mounted uniformly in a circumferential direction, wherein each of the iron blocks is provided with a heating device in the interior thereof and a wear-resistant block mounted on the top thereof, wherein mounted on an end face of the other end of the cutter bar is a pyramid prism, wherein a laser transmitter and a photosensitive sensor are mounted in a height corresponding to the height range of the pyramid prism, wherein the incident beam emitted by the laser transmitter is oriented by a laser orientating block. The advantages of the disclosure lie in that the information of the position the deep hole cutter during deep hole machining process and whether the deep hole is skewed or not can be obtained in time, thereby facilitating a solution to the difficulty in detecting the workpiece deep hole straightness and on-line deviating correction, improving the position accuracy such as straightness of the deep hole and reducing the rejection rate of the workpiece.

Classes IPC  ?

• B23B 25/00 - Accessoires ou équipements auxiliaires des machines à tourner
• B23B 41/02 - Machines ou dispositifs à aléser ou à percer spécialement adaptés à un travail particulierAccessoires spécialement conçus à cet effet pour aléser des trous profondsMachines ou dispositifs à aléser ou à percer spécialement adaptés à un travail particulierAccessoires spécialement conçus à cet effet pour aléser à l'aide de forets couronnes, p. ex. des canons de fusils ou de carabines
• B23B 29/02 - Barres d'alésage
• B23Q 15/14 - Commande ou régulation de l'orientation de l'outil par rapport à la pièce
• G01S 17/42 - Mesure simultanée de la distance et d'autres coordonnées
• B23B 49/00 - Systèmes de mesure ou de calibrage des machines à aléser, pour le positionnement ou le guidage du foretDispositif pour indiquer les défauts des forets pendant l'alésageDispositifs à centrer les trous à aléser

Abrégé

The disclosure relates to a technical field of deep hole machining, particularly to a deep hole machining on-line deviating correction device based on laser detection, which solves the prior art problem of difficulty in the real-time, on-line detection and deviating correction in the process of deep hole machining. The device comprises a deep hole cutter and a cutter bar, and arranged on the cutter bar are a laser orientating block, a pyramid prism seat, the deep hole cutter and a metallic block with a heating device arranged therein. A beam emitted by a laser transmitter is orientated by the laser orientating block so as to be incident in parallel with the axis of the cutter bar, and then through a pyramid prism to form a return beam which reaches the photosensitive sensor. The advantages of the disclosure lie in that skewing of the deep hole cutter can be detected in time and skewing correction of the deep hole tool is achieved based on the heat expansion and cold contraction mechanism, and therefore the straightness and position accuracy during deep hole machining are improved.

Classes IPC  ?

• B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
• B23B 41/02 - Machines ou dispositifs à aléser ou à percer spécialement adaptés à un travail particulierAccessoires spécialement conçus à cet effet pour aléser des trous profondsMachines ou dispositifs à aléser ou à percer spécialement adaptés à un travail particulierAccessoires spécialement conçus à cet effet pour aléser à l'aide de forets couronnes, p. ex. des canons de fusils ou de carabines
• B23B 29/02 - Barres d'alésage
• G01S 17/42 - Mesure simultanée de la distance et d'autres coordonnées

Abrégé

The present invention relates to a method for preparing an aluminum-copper-iron quasicrystal and silicon carbide mixed reinforced aluminum matrix composite, where the aluminum-copper-iron quasicrystal and silicon carbide mixed reinforced aluminum matrix composite is prepared with an aluminum alloy serving as a matrix and with aluminum-copper-iron quasicrystal and silicon carbide serving as reinforcement agents via smelting in an intermediate-frequency induction melting furnace through the process of intermediate-frequency induction heating, vacuumizing, bottom blowing argon, and casting molding in view of low hardness and low tensile strength of aluminum matrix materials. The prepared aluminum-copper-iron quasicrystal and silicon carbide mixed reinforced aluminum matrix composite has a hardness of 80.3 HB which is improved by 50.64% and tensile strength of 285 Mpa which is improved by 60.42%, and corrosion resistance thereof is improved by 40%.

Classes IPC  ?

• C22F 1/04 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid de l'aluminium ou de ses alliages
• B22C 9/02 - Moules en sable ou moules analogues pour pièces coulées
• B22D 21/00 - Coulée de métaux non ferreux ou de composés métalliques, dans la mesure où leurs propriétés métallurgiques affectent le procédé de couléeUtilisation de compositions appropriées
• B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p. ex. par broyage, meulage ou écrasement à la meule
• C22C 1/02 - Fabrication des alliages non ferreux par fusion
• C22C 1/06 - Fabrication des alliages non ferreux avec utilisation d'agents spéciaux d'affinage ou de désoxygénation
• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
• G01N 3/40 - Recherche de la dureté ou de la dureté au rebondissement
• B22C 3/00 - Emploi de compositions spécifiées pour revêtir les surfaces des moules, noyaux ou modèles
• C22C 1/10 - Alliages contenant des composants non métalliques
• C22C 32/00 - Alliages non ferreux contenant entre 5 et 50% en poids d'oxydes, de carbures, de borures, de nitrures, de siliciures ou d'autres composés métalliques, p. ex. oxynitrures, sulfures, qu'ils soient soient ajoutés comme tels ou formés in situ
• C22C 1/00 - Fabrication des alliages non ferreux
• C22C 45/08 - Alliages amorphes avec l'aluminium comme constituant majeur

Abrégé

A reinforced magnesium matrix composite includes a quasicrystal and alumina mixture particles reinforcement phase and a magnesium alloy matrix, where the weight ratio of the quasicrystal and alumina mixture particles reinforcement phase to the magnesium alloy matrix is (4-8) to 100; the magnesium alloy matrix including by weight 1000 parts of magnesium, 90 parts of aluminum, 10 parts of zinc, 1.5-5 parts of manganese, 0.5-1 part of silicon and 0.1-0.5 part of calcium; the quasicrystal and alumina mixture particles reinforcement phase including by weight 40 parts of magnesium, 50-60 parts of zinc, 5-10 parts of yttrium and 8-20 parts of nanometer alumina particles of which the diameter is 20-30 nm; and the quasicrystal and alumina mixture particles reinforcement phase having a size of 100-200 mesh.

Classes IPC  ?

• C22C 23/06 - Alliages à base de magnésium avec un métal du groupe des terres rares comme second constituant majeur
• C22C 1/02 - Fabrication des alliages non ferreux par fusion
• C22C 23/02 - Alliages à base de magnésium avec l'aluminium comme second constituant majeur
• B22D 21/00 - Coulée de métaux non ferreux ou de composés métalliques, dans la mesure où leurs propriétés métallurgiques affectent le procédé de couléeUtilisation de compositions appropriées
• B22D 29/04 - Manutention ou démoulage des pièces ou des lingots
• B22D 27/00 - Traitement du métal dans le moule pendant qu'il est liquide ou plastique
• B22D 1/00 - Traitement des métaux en fusion dans la poche ou dans les chenaux de coulée avant le moulage
• B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p. ex. par broyage, meulage ou écrasement à la meule
• B22D 7/00 - Coulée de lingots

Abrégé

The present invention provides a slow and controlled release polymeric sulfur fertilizer containing multiple nutrient elements. The slow and controlled release polymeric sulfur fertilizer is represented by the following formula, in which m=1-4, and n=100-210. The element sulfur in the slow and controlled release polymeric sulfur fertilizer according to embodiments of the present invention has very high utilization rate.

Classes IPC  ?

• C08G 75/00 - Composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant du soufre, avec ou sans azote, oxygène ou carbone
• C05B 17/00 - Autres engrais phosphatés, p. ex. phosphates naturels, os verts

Abrégé

The invention discloses a silicon-based monolithic integrated sonar array which includes a cantilevered sensing array structure, a sound-transparent jacket, and a support structure. The cantilevered sensing array structure is fixed on the support structure and in the sound-transparent jacket, wherein the sound-transparent jacket is filled with insulating dielectric oil, and the cantilevered sensing array structure is immersed in the insulating dielectric oil. The sound-transparent jacket is sealed and is treated with water tightness processing. The array can be applied into devices for underwater ultrasonic imaging, ultrasonic ranging, torpedo navigating, etc.

Classes IPC  ?

• G10K 11/00 - Procédés ou dispositifs pour transmettre, conduire ou diriger le son en généralProcédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général
• G01S 7/521 - Caractéristiques de structure
• G01H 3/00 - Mesure des vibrations en utilisant un détecteur dans un fluide

Abrégé

The invention discloses a silicon-based monolithic integrated sonar array which includes a cantilevered sensing array structure, a sound-transparent jacket, and a support structure. The cantilevered sensing array structure is fixed on the support structure and in the sound-transparent jacket, wherein the sound-transparent jacket is filled with insulating dielectric oil, and the cantilevered sensing array structure is immersed in the insulating dielectric oil. The sound-transparent jacket is sealed and is treated with water tightness processing. The array can be applied into devices for underwater ultrasonic imaging, ultrasonic ranging, torpedo navigating, etc.

Classes IPC  ?

• G01S 7/52 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe

Abrégé

A speckle removal device relating to the technical field of display having a coherent light as a light source, based on Mie scattering and motion of magnetically controlled particles, solves the problems in the prior art of bad speckle removal effect, complex structure, high cost, and being easily damaged. The speckle removal device (300) comprises a closed optical reflective chamber (302) disposed with an incident optical coupler device (301) and a projection emergent surface (303). The inner walls of the closed optical reflective chamber (302) are all mirrors except the inner wall of the projection emergent surface (303). The inside of the closed optical reflective chamber (302) is filled with a solution or a sol (401). Dispersed inside of the solution or sol (401) are magnetic medium particles (402) having a linear dimension that triggers Mie scattering on an incident laser. Disposed for the closed optical reflective chamber (302) is a magnetic field generation device for generating a magnetic field. The electromagnet (308) of the magnetic field generation device is disposed outside of the closed optical reflective chamber. The speckle removal device has a logical, compact structure, high speckle removal effect, and is safe, reliable, and easy to implement at a low cost. The device has high laser utilization rate and stability, and makes illumination even.

Classes IPC  ?

• G02B 27/48 - Systèmes optiques utilisant la granulation produite par laser

Abrégé

Disclosed is a speckle removal device (300) based on Mie scattering and an optical part. The speckle removal device (300) comprises: an optical reflective chamber (302) disposed with an incident optical coupler device (301) and an emergent surface (303), and an optical part (308) disposed facing the incident optical coupler device (301) of the optical reflective chamber (302). The optical part (308) is an optical part that changes the incident angle of light beams. The inner walls of the optical reflective chamber (302) are all mirrors except the inner wall of the emergent surface. The inside of the optical reflective chamber (302) is completely filled with a transparent solid matter (401), and dispersed inside of the transparent solid matter (401) are medium particles (402) that trigger Mie scattering on an incident laser. The speckle removal device (300) has a compact structure, high speckle removal effect, high laser utilization rate, and stability, and makes illumination even.

Classes IPC  ?

• G02B 27/48 - Systèmes optiques utilisant la granulation produite par laser