Abstract

Disclosed in the present invention is a gas-barrier nylon composite material, comprising the following components in parts by weight: 60 parts of PA6; 0-30 parts of an impact modifier; 2.5-20 parts of a polyhydroxy compound; and 2.5-6 parts of cyclodextrin or a derivative thereof. In the present invention, by means of compounding of a polyhydroxy compound and cyclodextrin or a derivative thereof, degradation in hydrogen-barrier property caused by addition of an impact modifier can be mitigated. Thus, the gas-barrier nylon composite material of the present invention has the advantages of a good hydrogen-barrier property and good high-temperature aging resistance, and a finished piece having a uniform wall thickness can be obtained by means of a blow molding process.

IPC Classes  ?

• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08L 5/16 - Cyclodextrin; Derivatives thereof
• C08K 5/053 - Polyhydroxylic alcohols
• B65D 90/04 - Linings

Abstract

An antibacterial fabric and a preparation method therefor, which relate to the technical field of new materials. The preparation method for an antibacterial fabric comprises: adding 0.1-30 parts of polylactic acid to 100 parts of a solvent, and stirring the mixture for 0.5-5 hours at a temperature between room temperature and 100ºC at a rotation speed of 200-1000 rpm to dissolve polylactic acid, so as to obtain a polylactic acid solution with a mass concentration of 0.1-30%; adding 0.01-20 parts of antibacterial nanoparticles to the polylactic acid solution, and stirring same to obtain a mixed solution; and soaking a fabric in the mixed solution, leaving same to stand or stirring same for 0.01-12 hours at a rotation speed of less than 2000 rpm, taking out the fabric, and drying the fabric in the air, so as to obtain the antibacterial fabric. The preparation method for an antibacterial fabric has a high efficiency, a low cost and a simple process, and the prepared antibacterial fabric has good antibacterial performance and is suitable for batch production.

IPC Classes  ?

• D06M 15/507 - Polyesters
• D06M 11/44 - Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic System; Zincates; Cadmates
• D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
• D06M 101/20 - Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
• D06M 101/32 - Polyesters
• D06M 101/06 - Vegetal fibres cellulosic

Abstract

The present invention relates to the technical field of biomedical materials. Disclosed is a method for preparing an anti-adhesion membrane by electrospinning. The method comprises: dissolving chitosan and a toughening agent in a dilute acid solution system to form a stable transparent solution, and then forming a fiber membrane by means of an electrospinning technology. According to the present invention, a low-toxicity volatile solvent system is selected, and a residual solvent in a spun membrane can be removed in a simple drying mode. Fiber forming in the fiber membrane is stable, and the fiber diameter is controlled between 30 nm and 4000 nm.

IPC Classes  ?

• A61L 15/28 - Polysaccharides or their derivatives
• A61L 15/26 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
• D04H 1/728 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
• D04H 1/541 - Composite fibres e.g. sheath-core, sea-island or side-by-side; Mixed fibres
• A61L 15/24 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
• A61L 15/32 - Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin

Abstract

A natural and durable antimicrobial superhydrophobic cellulose fabric and a preparation method therefor. The natural and durable antimicrobial superhydrophobic cellulose fabric comprises a cellulose fabric and a coating adhered to a surface of the cellulose fabric. The coating is mainly composed of polydopamine, dopamine quinone, a dopamine oligomer, and a natural organic antimicrobial agent phenolic ketone compound. The polydopamine or dopamine quinone is bound to cellulose by means of hydrogen bonds and covalent bonds. The natural organic antimicrobial agent phenolic ketone compound is bound to the polydopamine by means of covalent bonds. The preparation method comprises: first reacting the natural organic antimicrobial agent phenolic ketone compound with dopamine under acidic conditions to prepare a secondary amine hydrophobic antimicrobial modifier containing a (poly)dopamine structure, and then reacting the secondary amine hydrophobic antimicrobial modifier containing the (poly)dopamine structure with the cellulose fabric under aerobic alkaline conditions. The process of the method is simple, and the prepared product has a high antimicrobial rate and superhydrophobic properties.

IPC Classes  ?

• D06N 3/12 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• D06N 3/00 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof

Abstract

The present invention relates to a quality improvement method and apparatus for a semiconductor device, and a high-energy particle beam photolithography device. The method comprises: acquiring connected regions consisting of target pixel points in grayscale images and the width of each connected region; according to a width interval where the width of each connected region is located and a correspondence between the width interval and a high-energy particle beam spot size, acquiring a target high-energy particle beam spot value when a high-energy particle beam photolithography device engraves a pattern corresponding to each connected region; and according to a correspondence between a preset high-energy particle beam processing parameter corresponding to the target high-energy particle beam spot value and a grayscale value, acquiring high-energy particle beam processing parameters corresponding to pixel points in each connected region. In this way, a larger high-energy particle beam spot is used when the high-energy particle beam photolithography device engraves a connected region having a larger width, and a smaller high-energy particle beam spot is used when the high-energy particle beam photolithography device engraves a connected region having a smaller width. Compared with the prior art, the method ensures the processing efficiency while improving the processing precision of the semiconductor device.

IPC Classes  ?

• H01L 21/033 - Making masks on semiconductor bodies for further photolithographic processing, not provided for in group or comprising inorganic layers
• H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation

Abstract

A spinning solution, a heat-resistant creep-resistant fiber and preparation method therefor are provided. The spinning solution includes a polyethylene, a solvent and a photoinitiator, and the content of the photoinitiator is 0.2 wt %-10 wt % of the mass of the polyethylene; gel-spinning and multi-stage drafting the spinning solution; then performing ultraviolet irradiation by an ultraviolet light source to obtain a heat-resistant creep-resistant polyethylene fiber; the light intensity and the time of the ultraviolet light source is 100 W/cm2-5000 W/cm2 and 10 s-600 s, respectively; the gel content and the crystallinity of the heat-resistant creep-resistant polyethylene fiber is 20 wt %-100 wt % and 50 wt %-90 wt %, respectively; the creep rate of the fiber is 10−8 s−1-10−7 s−1 under conditions of a temperature of 70° C. and a load of 300 MPa; the fracture temperature of the fiber is 155° C.-245° C. under conditions of a load of 15 MPa and a heating rate of 2° C./min.

IPC Classes  ?

• D01D 5/06 - Wet spinning methods

Abstract

0,n value to the central processing unit, calculates the replenishment amount through the central processing unit, and controls the replenishment pump to replenish the solution.

IPC Classes  ?

• D06P 1/00 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed
• D06P 1/38 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using reactive dyes
• D06P 3/66 - Natural or regenerated cellulose using reactive dyes
• G05D 11/13 - Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means

Abstract

A device for using an airflow under clothes to evaluate the thermal protection performance of fabric. The device comprises a control system (1) for providing a heat source, a cylindrical skin simulator (9), and a monitoring system for an airflow under clothes (14), wherein an upper end of the cylindrical skin simulator (9) is provided with fabric clamping devices (11) that are evenly distributed, a sliding rail (12) is arranged on each fabric clamping device (11), and the sliding rail (12) is fixed to the cylindrical skin simulator (9); a skin simulation sensor (10) is embedded in a surface of the cylindrical skin simulator (9), and the skin simulation sensor (10) is electrically connected to a data acquisition and processing system (17); the surface of the cylindrical skin simulator (9) is provided with a fabric warp-direction thermal contraction scale meter (24); and the monitoring system for an airflow under clothes (14) is used for monitoring the speed and temperature of an airflow in a human body clothing system, and is connected to the data acquisition and processing system (17). The device can accurately predict the thermal protection performance of clothing on a dressed human body under different conditions of an airflow under clothes.

IPC Classes  ?

• G01N 25/20 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity

Abstract

A manufacturing method for antimicrobial and anti-yellowing ZnO antimony-free polyester fibers. During a direct spinning process of an antimony-free polyester melt, an anti-yellowing nanometer antimicrobial agent is introduced into a polymerization process of antimony-free polyester, so as to prepare antimicrobial and anti-yellowing ZnO antimony-free polyester fibers. The anti-yellowing nanometer antimicrobial agent is nano-ZnO, which is surface-deposited or surface-coated with phosphate ester micromolecules having a thermo-oxidative degradation resistance function; the phosphate ester micromolecules and the nano-ZnO are bound via Van der Waals force, a hydrogen bond or a covalent bond; and the molecular weight of the phosphate ester micromolecules is 500 Da or less. The content of nano-ZnO in the antimicrobial and anti-yellowing ZnO antimony-free polyester fibers is not lower than 1.2 wt%, and the value of the yellowness index (YI) of the antimicrobial and anti-yellowing ZnO antimony-free polyester fibers is not higher than 16.1. The manufacturing method is simple and is broad in terms of application range; and the prepared antimicrobial and anti-yellowing ZnO antimony-free polyester fibers have good antimicrobial and deodorizing functions, do not turn yellow, and have good strength and laundering durability.

IPC Classes  ?

• D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
• D01F 1/10 - Other agents for modifying properties
• D01D 5/098 - Melt-spinning methods with simultaneous stretching

Abstract

A gas diffusion layer for proton exchange membrane fuel cell and preparation method thereof are provided. The preparation method is to papermake and dry carbon fiber suspension mainly composed of a fibrous binder, water, a dispersant and carbon fibers with different aspect ratios to obtain a carbon fiber base paper, and then carbonize and graphitize under the protection of nitrogen or inert gas to obtain a gas diffusion layer for proton exchange membrane fuel cell; where the fibrous binder is a composite fiber or a blend fiber composed of a phenolic resin and other resin; where the prepared gas diffusion layer for proton exchange membrane fuel cell has a pore gradient, and the layer with the smallest pore size is an intrinsic microporous layer.

IPC Classes  ?

• H01M 4/88 - Processes of manufacture
• D01D 5/088 - Cooling filaments, threads or the like, leaving the spinnerettes
• D01F 6/94 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
• D01D 5/06 - Wet spinning methods
• D01D 5/04 - Dry spinning methods
• D01D 5/28 - Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
• D21H 13/50 - Carbon fibres
• D21H 13/22 - Condensation polymers of aldehydes or ketones
• D21H 21/08 - Dispersing agents for fibres
• D21H 17/53 - Polyethers; Polyesters
• D21H 25/02 - Chemical or biochemical treatment
• H01M 4/86 - Inert electrodes with catalytic activity, e.g. for fuel cells
• H01M 8/10 - Fuel cells with solid electrolytes

Abstract

The present invention relates to a machining control method for a semiconductor device and high energy particle beam lithography equipment. The machining control method for a semiconductor device comprises: obtaining an integrated circuit layout corresponding to a target semiconductor device; respectively converting a plurality of integrated circuit sub-layout layers into gray-scale pictures of a preset format; carrying out color reversal on the gray-scale pictures to obtain gray-scale negatives corresponding to the gray-scale pictures; obtaining high energy particle beam machining parameters corresponding to various pixel points in the gray-scale negatives according to a preset correspondence relationship between high energy particle beam machining parameters and the gray-scale values; sequentially producing each corresponding material layer on a target substrate, and controlling the high energy particle beam lithography equipment to emit a high energy particle beam and act on the corresponding material layers on the target substrate according to the high energy particle beam machining parameters corresponding to the various pixel points in the gray-scale negatives to obtain a target semiconductor device. Compared to the prior art, an integrated circuit mask is unnecessary in the present application, an etching effect and machining efficiency are improved, and production costs are reduced.

IPC Classes  ?

• H01L 21/033 - Making masks on semiconductor bodies for further photolithographic processing, not provided for in group or comprising inorganic layers
• H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation

Abstract

The present invention relates to a method for improving the solubility and dissolution rate of a dye chemical in a supercritical carbon dioxide fluid, which method comprises: first raising the temperature to a target temperature above the melting point of a dye chemical, so as to melt the dye chemical; then mixing a flowing supercritical carbon dioxide fluid having an initial temperature with the molten dye chemical at a certain mass ratio; and then cooling the supercritical carbon dioxide fluid with the dye chemical dissolved therein to the initial temperature, and cyclically repeating the mixing and cooling processes and maintaining same for a certain period of time, wherein all the temperature conditions during the process of cyclically repeating same are kept consistent with the previous temperature conditions, the dye chemical is a dye and/or functional auxiliary agent, the initial temperature is lower than the target temperature, and the pressure of the supercritical carbon dioxide fluid is always kept consistent. In the present invention, the solubility and the dissolution rate of the dye chemical in supercritical carbon dioxide are improved, no other co-solvents need to be added, no harm is caused to the human body, and the problem of the separation and removal of co-solvents also does not need to be taken into consideration.

IPC Classes  ?

• D06B 23/20 - Arrangements of apparatus for treating processing-liquids, -gases, or -vapours, e.g. purification, filtration, distillation
• D06B 23/22 - Arrangements of apparatus for treating processing-liquids, -gases, or -vapours, e.g. purification, filtration, distillation for heating
• D06B 9/02 - Solvent-treatment of textile materials solvent-dyeing

Abstract

222 can be used repeatedly.

IPC Classes  ?

• D06P 1/81 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in inorganic solvents
• D06P 1/94 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in solvents which are in the supercritical state
• D06P 1/16 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
• D06P 1/647 - Nitrogen-containing carboxylic acids or their salts
• D06P 1/649 - Compounds containing carbonamide, thiocarbonamide or guanyl groups
• D06P 1/651 - Compounds without nitrogen
• D06P 1/653 - Nitrogen-free carboxylic acids or their salts

Abstract

A long-range electrochromic fiber for infrared camouflage and preparation method thereof are disclosed. The method includes: coating indium tin oxide dispersion, electrolyte solution, and electrochromic material on the surface of the metal fiber sequentially, and preparing counter electrodes and polymer protective layer on the outside of the electrochromic layer to obtain the long-range electrochromic fiber. The obtained long-range electrochromic fiber can realize the regulation of infrared emissivity, can be continuously prepared for more than 100 meters and has a good application prospect in infrared camouflage, wearable display, etc.

IPC Classes  ?

• G02F 1/155 - Electrodes
• G02F 1/153 - Constructional details
• G02F 1/1343 - Electrodes
• C09D 5/24 - Electrically-conducting paints
• C09D 7/20 - Diluents or solvents
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 7/63 - Additives non-macromolecular organic
• C09D 127/16 - Homopolymers or copolymers of vinylidene fluoride
• C09D 179/02 - Polyamines
• C09D 165/00 - Coating compositions based on macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Coating compositions based on derivatives of such polymers
• C09D 123/06 - Polyethene
• D06M 11/46 - Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
• D06M 11/30 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxides or oxyacids of halogens or salts thereof with oxides of halogens, oxyacids of halogens or their salts, e.g. with perchlorates
• D06M 15/256 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
• D06M 15/63 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing sulfur in the main chain, e.g. polysulfones
• D06M 11/81 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with fluoroborates
• D06M 15/227 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
• D06M 15/513 - Polycarbonates

Abstract

The present invention relates to a polymer-based semiconductor fiber and preparation and application thereof. The preparation method comprises: preparing a conjugated semiconductor polymer into a spinning solution for wet spinning; performing wet spinning, spinning filaments extruded from a spinneret first sequentially entering a first coagulating bath and a second coagulating bath for drying, collecting the dried fibers, and annealing the collected fibers to obtain a polymer-based semiconductor fiber. Both the surface and the interior of the fiber have a pore channel structure, and the fiber further has an orientation structure. The polymer-based semiconductor fiber has a breaking stress of 700 MPa, a conductivity of 1×10 -12Scm -1-13S cm -1, and a carrier mobility of 0.0001-100 cm 2V -1s -1GDD) flowing through the entire channel is significantly improved.

IPC Classes  ?

• D01F 6/74 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
• D01F 6/76 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
• H01L 51/05 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for rectifying, amplifying, oscillating or switching and having at least one potential-jump barrier or surface barrier; Capacitors or resistors with at least one potential-jump barrier or surface barrier
• H01L 51/30 - Selection of materials

Abstract

The present invention relates to a colorless transparent polyimide resin film and a preparation method therefor, having a molecular structure general formula of (I). The present invention has excellent dimensional stability, low water absorption, and excellent electrical property, mechanical property and heat resistance, and reaction raw materials are convenient to obtain and low in cost, to facilitate further popularization and application.

IPC Classes  ?

• C08G 73/10 - Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• C08G 73/12 - Unsaturated polyimide precursors
• C08L 79/08 - Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
• C08J 5/18 - Manufacture of films or sheets

Abstract

A stent and a preparation method therefor. The preparation method comprises: step 1, weaving a single or single-strand metal wire into a cylindrical tubular stent (1); step 2, spirally feeding a single or a plurality of metal wires into sinker loops of a specified penetrating-in position (3) and penetrating-out position (4) of the cylindrical tubular stent (1) according to requirements of a screw pitch, the number of the metal wires, a spiral direction, and a penetrating and sleeving period, so as to obtain a semi-finished product; and step 3, penetrating and sleeving the semi-finished product on a core rod, fixing two ends, then performing heat setting, and demolding to obtain the stent. The prepared stent comprises the cylindrical tubular stent (1) and the single or plurality of spiral metal wires (2); the spiral central axis of the spiral metal wire (2) coincides with the central axis of the cylindrical tubular stent (1); the spiral metal wire (2) is sleeved on the whole area or one section of the cylindrical tubular stent (1) in a penetrating manner, and the penetrating-in position (3) and the penetrating-out position (4) of the spiral metal wire (2) are located in the sinker loops of the cylindrical tubular stent (1). The stent is good in radial enhancement effect, good in recoverability and good in flexibility.

IPC Classes  ?

• A61F 2/88 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
• A61F 2/86 - Stents in a form characterised by wire-like elements; Stents in a form characterised by a net-like or mesh-like structure

Abstract

The present invention relates to a gas diffusion layer for a proton exchange membrane fuel cell and a preparation method therefor. The method comprises: subjecting a carbon fiber suspension which is mainly composed of a fibrous adhesive, water, a dispersant, and carbon fibers with different length-diameter ratios to papermaking and drying to obtain carbon fiber base paper, and then subjecting same to carbonization and graphitization treatments under the protection of nitrogen or an inert gas to obtain the gas diffusion layer for the proton exchange membrane fuel cell, wherein the fibrous adhesive is a composite fiber or blend fiber composed of a phenolic resin and other resins. The finally prepared gas diffusion layer for the proton exchange membrane fuel cell has a pore gradient, and the layer with the minimum pore diameter is an intrinsic microporous layer. The method of the present invention omits the step of impregnating the base paper with a resin, can realize the integrated forming of carbon paper and the microporous layer, does not require the subsequent coating preparation of the microporous layer, and has a simple process and reduced cost.

IPC Classes  ?

• H01M 4/88 - Processes of manufacture

Abstract

A superhydrophobic coating having a three-dimensional porous nanocomposite structure, includes: a constructing unit and a bonding unit; the constructing unit comprises inorganic hydrophobic nanoparticles, the bonding unit comprises hydrophobic polymer nanomicrospheres, and the inorganic hydrophobic nanoparticles and the hydrophobic polymer nanomicrospheres are interconnected to form uniform pores. A method for preparation of the superhydrophobic coating includes: mixing the inorganic hydrophobic nanoparticles with the hydrophobic polymer nanomicrospheres in a dispersant to form a coating solution; and coating the coating solution on the surface of a substrate using a dip coating, roll coating or spray coating process, and drying to form the superhydrophobic coating of a three-dimensional porous nanocomposite structure.

IPC Classes  ?

• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
• C09D 7/62 - Additives non-macromolecular inorganic modified by treatment with other compounds
• C09D 7/40 - Additives
• C09D 7/45 - Anti-settling agents
• C09D 7/63 - Additives non-macromolecular organic
• C09D 125/06 - Polystyrene
• C09D 133/12 - Homopolymers or copolymers of methyl methacrylate

Abstract

A photo-curing three-dimensional printing preview method, comprising: obtaining the relationship of the conversion rate of a photosensitive resin system versus time under different curing conditions by measuring the relationship between the absorbance of the photosensitive resin system under different curing conditions and the time; fitting on experimental curves on the basis of a photo-curing kinetic equation by an iterative solution method, and obtaining a photo-curing kinetic constant of the photosensitive resin system; solving a photo-curing reaction kinetic differential equation set by using a fixed-step Euler method, and obtaining the relationship curves of the spatial distribution of each component content of the photosensitive resin system versus time; and conducting simulation printing, in conjunction with the relationship curves obtaining a space distribution of each component content in each layer of structure in a three-dimensional printing product after printing is completed, and completing a photo-curing three-dimensional printing preview.

IPC Classes  ?

• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing

Abstract

The invention relates to a spinning stock solution, and a heat-resistant and creep-resistant fiber and a preparation method therefor. The spinning stock solution comprises polyethylene, a solvent and a photoinitiator. The amount of the photoinitiator is 0.2 wt% -10 wt% of the mass of polyethylene. The method comprises: performing gel spinning and multi-stage drafting on a spinning stock solution to obtain a polyethylene fiber; and then performing ultraviolet irradiation by means of an ultraviolet light source to obtain a heat-resistant and creep-resistant polyethylene fiber. The light intensity of the ultraviolet light source is 100mW/cm 2- 5000mW/cm 2. The ultraviolet irradiation time is 10s - 600s. The heat-resistant and creep-resistant polyethylene fiber has a gel content of 20wt% - 100wt% and a crystallinity of 50wt% - 90wt%. Under a temperature of 70°C and a load of 300Mpa, the creep rate of the fiber is 10 -8s -1- 10 -7s -1. Under a load of 15MPa and a temperature increase rate of 2°C/min, the breaking temperature of the fiber is 155°C - 245°C. The present method is simple and easy to implement, and has a wide range of applications.

IPC Classes  ?

• D01F 6/46 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
• D01F 11/04 - Chemical after-treatment of man-made filaments or the like during manufacture of synthetic polymers
• D01D 5/04 - Dry spinning methods

Abstract

0,n0,n0,n0,n0,n value to the central processing unit; and the central processing unit calculates a liquor replenishing amount and controls the liquor replenishing pump to replenish liquor. By means of the digital control method for a liquor replenishing system during a pad dyeing process of color matching of dyes, the liquor replenishing amount of a dye can be accurately calculated, such that digital control of a liquor replenishing system is realized, and conversion from control by human experience to digital control of the liquor replenishing system is realized.

IPC Classes  ?

• G05D 11/13 - Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means

Abstract

The present invention provides a method and apparatus for measuring a battery impedance value. The following steps are executed: performing multiple pulse discharges on a battery in multiple different discharge time periods, and separately measuring multiple equivalent direct current resistance values of the battery; drawing an equivalent direct current resistance spectrum, the equivalent direct current resistance spectrum comprising a horizontal axis and a vertical axis, the horizontal axis comprising the multiple different discharge time periods, and the vertical axis comprising the equivalent direct current resistance values corresponding to the different discharge time periods; obtaining equivalent circuit model parameter values of the battery according to the equivalent direct current resistance spectrum; and calculating the impedance value of the battery by an impedance calculation formula of a battery equivalent circuit according to the equivalent circuit model parameter values. By means of the method and apparatus for measuring a battery impedance value provided by the present invention, the detection accuracy of battery equivalent circuit model parameter values and impedance values, the application range, and the real-time capability can be improved, thereby more effectively and accurately evaluating the service life and performance of batteries.

IPC Classes  ?

• G01R 31/389 - Measuring internal impedance, internal conductance or related variables

Abstract

A tactile perception guide handbook, made using the following steps: first, performing layout design on an exhibition handbook according to a preset pattern and text, and then: designing a braille structure corresponding to the text at a position laid out as having text in the exhibition handbook, where the braille structure and the text overlap, and a text color used for the text producing a certain color contrast with a background color, causing the text have a prominent appearance; with respect to the laid out pattern on the exhibition handbook, utilizing different materials and/or different textures to handle different parts of the pattern, causing the different parts of the pattern to output different tactile information. To a certain extent, the present handbook avoids information exchange obstacles when a person with a visual impairment visits an exhibition, and also provides ordinary visitors with a sensory experience aside from visual perception.

IPC Classes  ?

• B42F 5/02 - Stamp or like filing arrangements in albums
• B41J 3/32 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
• B41M 3/16 - Braille printing

Abstract

A long-range electrochromic fiber for infrared camouflage and a preparation method therefor. The method comprises: sequentially coating the surface of a metal fiber with an indium tin oxide dispersion, an electrolyte solution and an electrochromic material, and then preparing a counter electrode and a polymer protective layer on the outer side of an electrochromic layer to obtain a long-range electrochromic fiber. The prepared long-range electrochromic fiber can achieve the controllable adjustment of the infrared emissivity and can be continuously prepared for one hundred meters or more, and has a good application prospect in the fields of infrared camouflage, wearable displays, etc.

IPC Classes  ?

• G02F 1/1503 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect caused by oxidation-reduction reactions in organic liquid solutions, e.g. viologen solutions
• G02F 1/1516 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising organic material
• G02F 1/155 - Electrodes
• G02F 1/153 - Constructional details

Abstract

A stable conductive myocardial patch with a negative Poisson's ratio structure is provided. The preparation method includes preparing a myocardial patch substrate with concave polygons as the structural units by weaving or knitting, and then a conductive coating is coated on the surface of the substrate. Alternatively, the yarns can be processed into conductive coated yarns first, and then used as the raw material to weave or knit a stable conductive myocardial patch with a negative Poisson's ratio structure. The prepared myocardial patch has a relative resistance change of less than 5% at 50% tensile strain. When the strain of the structural units is within 50%, the fabric exhibits a negative Poisson's ratio structure, which expands in the perpendicular direction of the tensile load. The fabric exhibits a negative Poisson's ratio effect and anisotropy of Young's modulus, which matches the mechanical behavior of natural myocardium.

IPC Classes  ?

• D03D 13/00 - Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
• D03D 15/283 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
• D03D 15/56 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
• A61F 2/24 - Heart valves
• C09D 5/24 - Electrically-conducting paints
• C09D 139/04 - Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
• D03D 17/00 - Woven fabrics having elastic or stretch properties due to manner of weaving
• C08F 2/04 - Polymerisation in solution
• C08F 126/06 - Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen
• D04B 1/10 - Patterned fabrics or articles
• D04B 1/18 - Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
• D02G 3/02 - Yarns or threads characterised by the material or by the materials from which they are made
• D02G 3/32 - Elastic yarns or threads
• D02G 3/44 - Yarns or threads characterised by the purpose for which they are designed

Abstract

Disclosed is an adjustable art gallery work exhibition stand based on children's scale, the work exhibition stand comprising a top seat (1), a steel wire rope (2) and a wireless remote control (3), wherein the top seat (1) is arranged on a ceiling, an automatic lifting electric motor, a winding pipe and a wireless remote control receiver are arranged in the top seat, the automatic lifting electric motor is connected to the winding pipe, the winding pipe is connected to the steel wire rope (2), the automatic lifting electric motor controls the winding pipe to rotate in a clockwise direction and a counter-clockwise direction so as to adjust the length of the steel wire rope (2), and the lower end of the steel wire rope (2) is connected to a an exhibited work. By means of changing and improving of the appearance design, the exhibited work can be adjusted to the appropriate viewing height, thereby realizing the effective dissemination of displayed information.

IPC Classes  ?

• A47F 7/14 - Show stands, hangers, or shelves, adapted for particular articles or materials for pictures, e.g. in combination with books or seed-bags

Abstract

A multidirectional bent handrail stand column, which is placed in a subway and is a handrail used by multiple persons jointly. The multidirectional bent handrail stand column is bent and cannot be exclusively occupied, and can not only ensure that the needs of passengers who have not no seats and need to hold the handrail are not affected, but also save materials. Therefore, the handrail can play a more full role, reduce the danger of taking the subway, and solve the problem that one person exclusively occupies the handrail while other persons have no place to hold. The bent handrail is more good-looking, practical and space-saving.

IPC Classes  ?

• B61D 37/00 - Other furniture or furnishings
• B61D 49/00 - Other details

Abstract

The disclosure provides a method of continuous dyeing with reactive dyes in wet conditions, the method including: 1) adding fabric to a mixture of a dye liquor and an alkali through a one-bath-one-step method; 2) immersing the fabric pretreated in 1) in a padding liquor with an air film horizontal pad dyeing machine; 3) preheating the fabric after being treated in 2) at a temperature of 50-90° C.; and 4) rolling and batching the fabric after being treated in 3) at a temperature of 10-70° C. for 2-72 hours.

IPC Classes  ?

• D06P 5/00 - Other features in dyeing or printing textiles or dyeing leather, furs or solid macromolecular substances in any form
• D06P 1/38 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using reactive dyes
• D06P 5/20 - Physical treatments affecting dyeing, e.g. ultrasonic or electric

Abstract

A fabric. The fabric comprises at least a surface layer and an inner layer bonded to a surface of the surface layer, wherein the surface layer is made of surface layer yarn fibers, and the inner layer is made of inner layer yarn fibers; the porosity of the surface layer is greater than the porosity of the inner layer, and the pore size of the surface layer is less than the pore size of the inner layer. The fabric can form an "inner-surface" gradient moisture absorption and quick-drying structure, so that when the fabric contacts the user's skin, the continuous and rapid removal of skin sweat can be implemented.

IPC Classes  ?

• D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
• D03D 13/00 - Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
• D03D 11/00 - Double or multi-ply fabrics not otherwise provided for
• D04B 1/16 - Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
• D04B 21/00 - Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
• D01F 1/10 - Other agents for modifying properties
• A44C 5/00 - Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps

Abstract

A method for constructing an efficient product surface defect detection model based on network collaborative pruning is provided. According to an initial product surface defect detection model, the method provides a network-based collaborative pruning method and constructs the efficient product surface defect detection model. On a premise of ensuring an accuracy of a product defect detection method, a product surface defect detection time is reduced to satisfy manufacturer's requirements on the product surface defect detection time and accuracy of product surface defects.

IPC Classes  ?

• G06N 20/00 - Machine learning
• G06F 17/15 - Correlation function computation
• G06N 3/04 - Architecture, e.g. interconnection topology
• G06N 3/082 - Learning methods modifying the architecture, e.g. adding, deleting or silencing nodes or connections
• G06T 7/00 - Image analysis

Abstract

A type of flame-retardant cellulosic fiber and a preparation method thereof are disclosed. The preparation method includes extruding the cellulosic solution through a spinneret, coagulating, stretching, and water-washing to obtain a water-washed filament, which is then treated with a flame-retardant solution, and then rinsed and dried to prepare the flame-retardant cellulosic fiber. The water-washing temperature is ≤90° C., the temperature of the flame-retardant solution during treatment is 60-90° C., and the rinsing temperature is 20-40° C. The flame retardant contains more than one of a group that forms a covalent bond with a hydroxy group of the cellulosic macromolecule, a group having the ability of self-crosslinking reaction, and a group that forms a hydrogen bond with a hydroxy group of the cellulosic macromolecule. The prepared flame-retardant cellulosic fiber is mainly composed of the cellulosic fiber matrix and the flame retardant dispersed in the matrix.

IPC Classes  ?

• D01F 1/07 - Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
• D01F 2/02 - Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases, or salts
• D01D 5/06 - Wet spinning methods
• D01D 10/06 - Washing or drying
• D01F 2/06 - Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose

Abstract

A polyamide composite for improving laser weldability, comprising at least one polyamide resin. The polyamide resin is obtained by means of a polymerization reaction of the following monomers: 1) at least 10 mol% of monomers which form a diamine-derived structure repeating unit of the polyamide and are derived from at least one aliphatic diamine and/or cycloaliphatic diamine, the total number of carbon atoms of which is an odd number and/or the number of carbon atoms located on the backbone of which is an odd number; and 2) at least 10 mol% of monomers which form a dicarboxylic acid-derived structure repeating unit of the polyamide and are derived from at least one aliphatic dicarboxylic acid, the total number of carbon atoms of which is 4-18; or 3) at least 10 mol% of monomers which form a dicarboxylic acid-derived structure repeating unit of the polyamide and are derived from at least one aliphatic dicarboxylic acid and/or cycloaliphatic dicarboxylic acid, the total number of carbon atoms of which is an odd number and/or the number of carbon atoms located on the backbone of which is an odd number; and 4) at least 10 mol% of monomers which form a diamine-derived structure repeating unit of the polyamide and are derived from at least one aliphatic diamine and/or cycloaliphatic diamine, the total number of carbon atoms of which is 4-18. The polyamide resin accounts for 25%-90% of the total weight of the polyamide composite. By improving the structure of the polyamide resin, the laser weldability can be effectively improved, the application range of laser welding is further widened, and the laser transparency and the laser welding strength are improved.

IPC Classes  ?

• C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
• C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• C08K 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients
• C08K 7/14 - Glass
• C08K 5/20 - Carboxylic acid amides
• C08K 3/34 - Silicon-containing compounds
• C08K 3/04 - Carbon

Abstract

A superhydrophobic coating having a three-dimensional porous nanocomposite structure, comprising: a constructing unit and a bonding unit; the constructing unit is formed of inorganic hydrophobic nanoparticles, the bonding unit is formed of hydrophobic polymer nanomicrospheres, and the inorganic hydrophobic nanoparticles and the hydrophobic polymer nanomicrospheres are interconnected to form uniform pores. A method for preparation of the superhydrophobic coating, comprises: mixing the inorganic hydrophobic nanoparticles with the hydrophobic polymer nanomicrospheres in a dispersant to form a coating solution; and coating the coating solution on the surface of a substrate using a dip coating, roll coating or spray coating process, and drying to form the superhydrophobic coating of a three-dimensional porous nanocomposite structure.

IPC Classes  ?

• C09D 5/16 - Anti-fouling paints; Underwater paints
• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes

Abstract

A reactive dye moisture fixation continuous dyeing method, comprising steps of pretreatment, dye liquor padding, pre-drying, rolling and stacking. Compared with a conventional pad-drying pad-steaming process, processes of reactive material steam, solid, liquid padding and steaming are removed during operation, the process is short, the operation is simple, and the working efficiency is improved; the use amount of inorganic salt is low, reactive dye low-salt dyeing is achieved, and environmental pollution is reduced. Compared with a cold pad-batch process, in this method, a color sample is pre-dried after being padded by a dye working liquor, the moisture content is controlled within a certain range, hydrolysis of the dye is reduced, and the fixation rate is increased. The fabric obtained by using the method is full in cloth cover and deep in color yield, and the color fastness comprehensively satisfies the standard requirements.

IPC Classes  ?

• D06P 1/38 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using reactive dyes
• D06P 5/20 - Physical treatments affecting dyeing, e.g. ultrasonic or electric

Abstract

A light-curing three-dimensional printing preview method, comprising the following steps: obtaining the relationship curves of the conversion rate of a photosensitive resin system versus time under different curing conditions by means of measuring the relationship between the absorbance of the photosensitive resin system under different curing conditions and the time; conducting fitting on experimental curves on the basis of a light-curing kinetic equation by means of an iterative solution method, and obtaining a light-curing kinetic constant of the photosensitive resin system; solving a light-curing reaction kinetic differential equation set by using a fixed-step Euler method, and obtaining the relationship curves of the space distribution of each component content of the photosensitive resin system in the light-curing reaction process versus time; and conducting simulation printing, in conjunction with the relationship curves of the space distribution of each component content versus time, obtaining a space distribution of each component content in each layer of structure in a three-dimensional printing product after printing is completed, and completing a light-curing three-dimensional printing preview, thereby filling the gap of three-dimensional printing control software in respect of the preview function.

IPC Classes  ?

• B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• G01N 21/35 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light

Abstract

A finishing method for reactive dye inkjet printing based on a cationic modifier includes: using the inkjet printing method to spray print the cationic modifier ink and the reactive dye ink on the cellulose fiber fabrics' pattern area after being subjected to sizing treatment, then subjecting the fabrics to steaming or baking treatment, and subjecting the fabrics to soaping to get the reactive dye inkjet printing fabrics. The timespan of spray printing the cationic modifier ink and reactive dye ink is 0-2 min. Cationic modifier ink includes 1.0-60.0 wt % cationic modifier. The cationic modifier refers to the molecular whose structure contains reactive group and positive charge group and the number average molecular weight of 100-30000. The reactive group is one or more in the group containing epoxy group, triazine, pyridine, and olefin. The positive charge group is one or more in the group containing quaternary ammonium salt, and ammonium chloride.

IPC Classes  ?

• C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
• B41M 5/00 - Duplicating or marking methods; Sheet materials for use therein
• B41M 7/00 - After-treatment of printed works, e.g. heating, irradiating
• C09D 11/328 - Inkjet printing inks characterised by colouring agents characterised by dyes
• D06M 13/148 - Polyalcohols, e.g. glycerol
• D06M 13/432 - Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Guanidines, e.g. dicyandiamides
• D06M 15/11 - Starch or derivatives thereof
• D06M 15/13 - Alginic acid or derivatives thereof
• D06P 1/38 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using reactive dyes
• D06P 3/66 - Natural or regenerated cellulose using reactive dyes
• D06P 5/22 - Effecting variation of dye affinity on textile material by chemical means that react with the fibre
• D06P 5/30 - Ink jet printing
• D06M 101/06 - Vegetal fibres cellulosic

Abstract

A flame-retardant cellulose fibre and a preparation method therefor, the preparation method comprising: extruding cellulose fibre spinning solution through a spinneret, and solidifying, drawing, and washing same to obtain water-washed filament; using a flame retardant aqueous solution to pre-treat the water-washed filament, and then rinsing and drying to prepare the flame retardant cellulose fibre; the water washing temperature is ≥90℃, the temperature of the flame retardant aqueous solution during treatment is 60-90℃, and the rinsing temperature is 20-40℃; and the flame retardant contains one or more of a group capable of forming a covalent bond with a cellulose hydroxyl group, a group capable of a self-crosslinking reaction, and a group capable of forming a hydrogen bond with a cellulose hydroxyl group. The prepared flame retardant cellulose fibre is mainly composed of a cellulose fibre matrix and a flame retardant dispersed in the cellulose fibre matrix. The present preparation method has a simple process and mild conditions, and the prepared fibre has excellent mechanical properties, washing resistance, and flame retardancy.

IPC Classes  ?

• D01D 5/06 - Wet spinning methods
• D06M 11/11 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof

Abstract

Provided are a hollow porous partially absorbable suture and a preparation method therefor. The hollow porous partially absorbable suture is prepared from non-absorbable braiding yarn (1) and absorbable axial yarn (2) by means of a two-dimensional triaxial braiding process and a thermal treatment process. The preparation method therefor comprises: first pre-forming the braiding yarn (1) and the axial yarn (2) on the surface of a lining tube (3), so as to obtain a suture with a porous surface, wherein the pore diameter is adjustable in the axial direction; then, after the thermal treatment process is carried out, the axial yarn (2) being partially fused to fix braid points of the braiding yarn (1); and finally, removing the lining tube (3), and obtaining a hollow porous suture with a stable structure. The suture is partially absorbable, and can guarantee mechanical support and also reduce the non-absorbable ratio; and a hollow porous structure facilitates tissue ingrowth, and promotes tissue regeneration, and when in use, the suture is stressed to be tape-shaped, thereby reducing the cutting of tissue. An integral forming technique combining braiding with thermal setting is used in the preparation method, and no after-treatment technique, such as welding and bonding, is needed, thus achieving simple procedures and convenient processing.

IPC Classes  ?

• A61B 17/06 - Needles; Holders or packages for needles or suture materials
• D04C 1/02 - Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
• D04C 1/12 - Cords, lines, or tows

Abstract

The present invention provides super-hydrophobic fabrics and a preparation method thereof, and belong to the field of textiles. The super-hydrophobic fabrics are obtained by finishing Pickering emulsion formed by amphiphilic particles stabilizing low-surface-energy substances in water. Via a one-step finishing method using Pickering emulsion technology, facile preparation of durable super-hydrophobic fabrics is realized. The static contact angle between the finished fabric surfaces and water droplets is greater than 150 degrees, and the water droplets can roll off easily; and after being subjected to 30 times of standard washing tests, the finished fabrics still maintains excellent water repellency. In addition, the Pickering emulsion preparation and finishing process of the present invention are environmentally friendly, pollution-free, facile to operate and widely applicable.

IPC Classes  ?

• D06M 11/79 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
• D06M 11/49 - Oxides or hydroxides of elements of Groups 8, 9,10 or 18 of the Periodic System; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
• D06M 11/74 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with graphitic acids or their salts
• D06M 11/76 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon oxides or carbonates
• D06M 15/05 - Cellulose or derivatives thereof
• D06M 15/11 - Starch or derivatives thereof
• D03D 15/283 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
• D03D 15/217 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
• D06M 101/06 - Vegetal fibres cellulosic
• D06M 101/32 - Polyesters

Abstract

The present invention relates to a finishing method for dyeing with a cationically modified reactive dye by a one-bath process. A treatment liquid containing a cationic modifier and a reactive dye is arranged on a cellulose fiber fabric by a pad dyeing or dip dyeing process, and then soaping is performed to obtain a reactive dye dyed fabric. In the pad dyeing process, the cellulose fiber fabric is steamed, baked, or cold-rolled before being subjected to soaping. The molecular structure of the cationic modifier contains a reactive group and a positively charged group and has a number average molecular weight of 100 to 30000. The reactive group is one or a plurality of an epoxy group, s-triazine, pyridine, and an olefin, and the positively charged group comprises one or a plurality of a quaternary ammonium salt structure and an ammonium chloride structure. The method of the present invention combines cationic modification of a cotton fabric and fixation of a reactive dye into a single step, thereby shortening the process flow and improving the apparent color yield and the fixing rate of the fabric, and avoids the need to add an inorganic salt during the dyeing process, thereby avoiding environmental pollution.

IPC Classes  ?

• D06P 3/66 - Natural or regenerated cellulose using reactive dyes
• D06P 1/38 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using reactive dyes
• D06P 1/642 - Compounds containing nitrogen
• D06P 1/645 - Aliphatic, araliphatic or cycloaliphatic compounds containing amino groups
• D06P 1/66 - Compounds containing ammonium groups containing quaternary ammonium groups

Abstract

The present invention relates to a finishing method for reactive dye inkjet printing based on a cationic modifier ink. The cationic modifier ink and a reactive dye ink are sprayed on a sizing treated cellulose fiber fabric pattern region by an inkjet printing process, and the cellulose fiber fabric pattern region is then subjected to steaming or baking, and finally soaping to obtain a reactive dye inkjet printing fabric. The cationic modifier ink and the reactive dye ink are sprayed at an interval of 0 to 2 min. The cationic modifier ink is an ink containing 1.0 to 60.0 wt% of a cationic modifier. The cationic modifier is a molecule that contains a reactive group and a positively charged group in the molecular structure and has a number average molecular weight of 100 to 30,000, and the reactive group thereof is one or a plurality of an epoxy group, s-azine, pyridine, and an olefin, and the positively charged group comprises one or a plurality of a quaternary ammonium salt structure and an ammonium chloride structure. The method of the present invention has a simple process, low energy consumption, and good finishing effect, and has high promotional value.

IPC Classes  ?

• D06P 5/30 - Ink jet printing
• D06P 1/38 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using reactive dyes

Abstract

Provided is a super-hydrophobic fabric and a preparation method therefor, relating to the technical field of textiles. The super-hydrophobic fabric is characterized in that: the fabric is obtained by using Pickering emulsion through finishing, the Pickering emulsion being formed of amphipathic particles and materials having low surface energy through emusifying. The durable super-hydrophobic fabric is quickly prepared by one step through a finishing method of Pickering emulsion technique. Water drops on the surface of the finished fabric have a static contact angle of greater than 150 degrees and can fall off easily. After 30-times standard soaping tests, the fabric still maintain excellent water repellency. And besides, the Pickering emulsion preparation and finishing processes are environment-friendly and contamination-free, are easily operated and have good applicability.

IPC Classes  ?

• D06M 11/79 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
• D06M 15/05 - Cellulose or derivatives thereof
• D06M 11/76 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon oxides or carbonates
• D06M 11/74 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with graphitic acids or their salts
• D06M 11/49 - Oxides or hydroxides of elements of Groups 8, 9,10 or 18 of the Periodic System; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
• D06M 15/643 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain

Abstract

A novel device for photothermal evaporation of sea water by solar energy, comprising water tanks (1) on two sides, a hydrophilic photothermal conversion fabric (2) and a concentrated solution collection tank (3). The two sides of the hydrophilic photothermal conversion fabric (2) are respectively laid on the water tanks (1) at the two sides, and the two ends of the hydrophilic photothermal conversion fabric (2) are respectively placed in the water tanks (1) on two sides and immersed below the sea water surface. The hydrophilic photothermal conversion fabric (2) between the water tanks (1) on two sides is in a concave arc shape; the middle part of the hydrophilic photothermal conversion fabric (2) is a photothermal conversion area containing photothermal conversion materials; and the concentrated solution collection tank (3) is correspondingly arranged below the lowest point of the arc in the middle of the hydrophilic photothermal conversion fabric (2). The present invention employs solar energy resources to efficiently evaporate sea water, which reduces costs, improves evaporation efficiency of seawater, and avoids salt precipitation in seawater.

IPC Classes  ?

• C02F 1/08 - Thin film evaporation
• C02F 1/14 - Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy

Abstract

A method for forming polymer fiber by melt spinning under a negative pressure. First, a polymer melt, after being extruded from spinneret micropores, is slowly cooled to form nascent fibers; next, the nascent fibers are sequentially cooled under negative pressure and then cooled naturally. The negative pressure cooling refers to cooling in a negative pressure environment, the negative pressure environment referring to a closed environment with a constant temperature and pressure, in which the pressure is 0.001-0.01 MPa, the temperature is 5-105 ºC, and the internal atmosphere of the closed environment having a constant temperature and pressure is an atmosphere composed of air. The present invention achieves the thorough and even cooling of the fibers, solving problems in traditional melt spinning technology, for example, that fibers are cooled unevenly by ring-blowing cooling and side-blowing cooling under fixed temperature and humidity. In addition, the crystallization properties of the fibers are adjusted by means of regulating the temperature of the closed environment having a constant temperature and pressure, substantially improving the quality of the fibers. The air resistance in the spinning process is reduced by means of regulating the pressure of the closed environment having a constant temperature and pressure, improving the melt spinning speed and the production and processing efficiency.

IPC Classes  ?

• D01D 5/08 - Melt-spinning methods
• D01D 5/088 - Cooling filaments, threads or the like, leaving the spinnerettes
• D01D 5/253 - Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
• D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
• D01F 6/60 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides

Abstract

A high efficiency melt spinning method employing a low damping polymer comprises: performing melt spinning on a polymer melt by means of a low damping micro hole, the low damping micro hole having a surface energy of En ≤ 35 mJ/cm2, a surface roughness of Ra ≤ 0.2 μm, and a surface static contact angle of WCA ≥ 85°. The low damping micro hole is formed by taking a spinneret as a stationary bed and a polysiloxane treatment liquid as a flowing liquid; causing the flowing liquid to flow out of a micro hole of the spinneret at a temperature of 70°C-85°C; performing preliminary curing at a temperature of 95°C-120°C; performing curing again at a temperature of 200°C-230°C; and performing final curing at a temperature of 260°C-280°C.

IPC Classes  ?

• D01D 4/00 - Spinnerette packs; Cleaning thereof
• D01D 4/02 - Spinnerettes
• D01D 5/00 - Formation of filaments, threads, or the like
• D01D 5/08 - Melt-spinning methods
• C09D 183/04 - Polysiloxanes

Abstract

The present invention relates to a method for polymerization of nylon 6, and a melt direct spinning method thereof; first, a polyamide 6 prepolymer is prepared at low temperature; the oligomer content in the melt is pre-controlled, then by means of a method for mechanical reinforcement by a condensation polymerization reaction, polymerization is completed before a large amount of cyclic oligomer is generated, to obtain a nylon 6 polymer melt having a certain molecular mass; in said product, the extractable content is ≤1.5 wt%, and the cyclic dimer content is ≤0.2 wt%; then, after the mechanical reinforcement by the condensation polymerization reaction ends, melt spinning and shaping is directly carried out. The process of the present invention is simple; the utilization of caprolactam is increased, while power consumption is also reduced; the obtained melt can be directly melt-spun, and it is easy to achieve high-capacity large-scale production; a modifying agent may be added during the polymerization process to achieve flexible production of nylon 6, which may then be used in such fields as clothing fiber, industrial wiring, and engineering plastics.

IPC Classes  ?

• C08G 69/16 - Preparatory processes
• D01F 6/60 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
• D01F 1/10 - Other agents for modifying properties
• D01F 1/07 - Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
• D01F 1/08 - Addition of substances to the spinning solution or to the melt for forming hollow filaments
• D01D 5/253 - Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor

Abstract

Provided is a mesoporous zirconium-phosphate loaded nano-silver antibacterial polyester fiber and method for preparation thereof. The mesoporous zirconium-phosphate loaded nano-silver antibacterial polyester fiber comprises a polyester matrix; said polyester matrix has dispersed therein a Ag@ mesoporous zirconium phosphate. The method for preparing the mesoporous zirconium-phosphate loaded nano-silver antibacterial polyester fiber comprises: preparing a silver @ mesoporous zirconium phosphate sol precursor; the described silver @ mesoporous zirconium phosphate sol precursor, terephthalic acid (PTA), a diol, a stabilizing agent, and a catalyst are added in proportion to a polyester reactor; performing in situ polymerization and oxidation-reduction reaction to prepare a mesoporous zirconium phosphate-nano-silver antibacterial composite material, and drying and performing melt spinning to make a mesoporous zirconium-phosphate loaded nano-silver antibacterial polyester fiber.

IPC Classes  ?

• D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
• D01F 1/10 - Other agents for modifying properties
• C08G 63/183 - Terephthalic acids

Abstract

The present invention provides a method for using in situ polymerization to prepare an antibacterial material based on copper oxide/cuprous oxide, characterized by comprising: step 1: adding copper oxide, cuprous oxide, and diisocyanate to an organic solvent, and reacting at a certain temperature for 1-3 h, then filtering and drying to obtain a copper oxide/cuprous oxide composite antibacterial powder; step 2: adding, in proportion, the described copper oxide/cuprous oxide composite antibacterial powder, reaction monomer, stabilizer, and catalyst to a polymerization reactor, and preparing by means of in situ polymerization an antibacterial resin based on copper oxide/cuprous oxide. The method of the present invention is simple to implement and highly effective; it is low-cost, has lasting usefulness, and has broad prospects for application.

IPC Classes  ?

• C08G 63/00 - Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
• C08G 69/00 - Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
• C08K 3/08 - Metals
• D01F 6/90 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides

Abstract

Provided are an antibacterial material and method for preparation thereof, comprising a polymer matrix; a silver-containing non-metallic mesoporous material is distributed within the polymer matrix. The method for preparing the antibacterial material comprises: preparing a silver-containing non-metallic mesoporous material; subjecting the silver-containing non-metallic mesoporous material and a starting material containing a polymer monomer to in situ polymerization and melt direct spinning, or blending and spinning products of polymerization to prepare an antibacterial fiber containing a silver-containing non-metallic mesoporous material; or blending and pelletizing the silver-containing non-metallic mesoporous material and a polymer material, and melt-spinning to prepare an antibacterial fiber containing a silver-containing non-metallic mesoporous material; the antibacterial material has a long-lasting antibacterial effect.

IPC Classes  ?

• D01F 1/10 - Other agents for modifying properties
• D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Abstract

The present invention provides a method for preparing a high-silver-content zirconium phosphate powder, characterized in that same comprises: dispersing in an organic solvent a mesoporous zirconium phosphate powder and a polythiol compound, and subjecting same to ultrasonic dispersion for 0.5-2 hours; adding silver nitrate and stirring for 12-24 hours, then using a spray drying method to remove the organic solvent, and placing the obtained powder into an environment of 800-1200°C and calcining for 1-6 hours to obtain a zirconium phosphate powder having a silver mass content of 3-8%. The polythiol compound in the present invention may effectively disperse into the holes of the zirconium phosphate and onto its surface, and the thiol group first bonds with the hydroxyl on the surface of the zirconium phosphate; upon adding silver nitrate, the unreacted thiol group may effectively bond to silver ions, thus causing a large amount of silver ions to enter the mesopores of the zirconium phosphate and bond to the surface of the zirconium phosphate, forming high-silver-content zirconium phosphate particles.

IPC Classes  ?

• A01N 59/16 - Heavy metals; Compounds thereof
• A01N 25/08 - Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
• A01P 1/00 - Disinfectants; Antimicrobial compounds or mixtures thereof

Abstract

The present invention provides an antibacterial polyester fiber based on a silver-containing zirconium phosphate, and a method for preparation thereof. The antibacterial polyester fiber based on a silver-containing zirconium phosphate is characterized in that it comprises a polyester matrix, said polyester matrix having dispersed therein a silver-containing zirconium phosphate powder. The preparation method comprises: preparing a silver-containing zirconium phosphate nanopowder; adding the silver-containing zirconium phosphate nanopowder, terephthalic acid, and a diol to a polyester reactor to prepare a silver-containing zirconium phosphate antibacterial polyester by in situ polymerization; using melt direct spinning to prepare an antibacterial polyester fiber based on a silver-containing zirconium phosphate, or pelletizing the silver-containing zirconium-phosphate antibacterial polyester to obtain a silver-containing zirconium-phosphate antibacterial polyester masterbatch, and using a masterbatch blending spinning method to prepare an antibacterial polyester fiber based on a silver-containing zirconium phosphate. The antibacterial polyester fiber prepared in the present invention has the feature of a long-lasting highly effective antibacterial function.

IPC Classes  ?

• D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
• D01F 1/10 - Other agents for modifying properties
• C08G 63/183 - Terephthalic acids
• C08K 9/10 - Encapsulated ingredients
• A01N 59/16 - Heavy metals; Compounds thereof

Abstract

The present invention provides a method for preparing a copper-based antibacterial fiber, characterized in that the specific steps of said method comprise: step 1: a divalent copper compound is added to an ethanol alkali solution to form a Cu(OH)2 gel; the gel is filtered and washed until it is neutral; mesoporous zirconium phosphate is added, the adsorption effect of the pore channels of the mesoporous zirconium phosphate is used adsorb the Cu(OH)2 gel into the mesoporous channels to obtain a copper oxide @ mesoporous zirconium phosphate gel precursor; step 2: the described copper oxide @ mesoporous zirconium phosphate gel precursor, terephthalic acid (PTA), a diol, a stabilizing agent, and a catalyst are added in proportion to a polyester reactor, and in situ polymerization is used with the polymerization heat of reaction to prepare a mesoporous zirconium-phosphate nano copper oxide/polyester-based composite antibacterial masterbatch; the mesoporous zirconium-phosphate nano copper oxide/polyester-based composite antibacterial masterbatch is blended with a polymer at a certain mass ratio at 180-280°C and pelletized, dried, and melt spun to obtain a copper-based antibacterial fiber. The method of the present invention is simple to implement and highly effective; it is low-cost, has lasting usefulness, and has broad prospects for application.

IPC Classes  ?

• D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
• D01F 1/10 - Other agents for modifying properties

Abstract

A fancy yarn manufacturing method comprises: using a suspended member (2) to suspend a bobbin (3) with core yarn (10) wound thereon, providing a space around the bobbin (3) of the core yarn for wrapping the core yarn (10) with outer-wrapping yarn (20), drawing the core yarn (10) from the bobbin (3) of the core yarn and winding the core yarn (10) onto a winding mechanism; enabling the outer-wrapping yarn (20) to bypass the bobbin (3) of the core yarn, and wrapping the outer-wrapping yarn (20) around the core yarn (10) to form the fancy yarn; and reeling out the fancy yarn from the winding mechanism. With this method, there is no need to drive the entire bobbin of the outer-wrapping yarn, facilitating high-speed wrapping and high-speed processing.

IPC Classes  ?

• D02G 3/34 - Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
• D02G 3/36 - Cored or coated yarns or threads

Abstract

The present invention relates to a whole-process low temperature dyeing and finishing process for a cotton knitted fabric during scouring and bleaching, dyeing and soaping, specifically, a whole-process low temperature dyeing and finishing process for cotton fibres with high-retention concomitants, at least comprising the steps of low temperature scouring and bleaching, low temperature washing in water, low temperature dyeing and low temperature soaping. Compared with results obtained through traditional processing, fabrics processed in the invention have comparable strength, dyeing depth and various fastnesses, and at the same time, can save about 45% of energy, reduce weight loss of above 1.0% and COD emissions of above 10%, with the retention rate of the cotton wax reaching above 40%, thus significantly improving the feel of the fabric, and obviously reducing scratches and creases.

IPC Classes  ?

• D06L 3/02 - Bleaching fibres, threads, yarns, fabrics, feathers or made-up fibrous goods, leather or furs using compounds which develop oxygen
• D06M 16/00 - Biochemical treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, e.g. enzymatic
• D06P 3/66 - Natural or regenerated cellulose using reactive dyes
• D06M 101/06 - Vegetal fibres cellulosic

Abstract

A metal coordination compound oxidation system comprises a metal coordination compound and peroxide. The metal coordination compound oxidation system is used for soaping dyed textiles, and the soaping temperature is 20 to 80 degrees centigrade.

IPC Classes  ?

• D06M 13/503 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organic compounds containing boron, silicon, selenium or tellurium atoms without bond between a carbon atom and a metal or a boron, silicon, selenium or tellurium atom
• D06L 3/02 - Bleaching fibres, threads, yarns, fabrics, feathers or made-up fibrous goods, leather or furs using compounds which develop oxygen
• D06M 101/06 - Vegetal fibres cellulosic

Abstract

Disclosed is a method for extracting the full-length gene of MiSp of Araneus ventricosus and expressing same. The nucleotide sequence of the obtained full-length gene of MiSp of Araneus ventricosus with a full length of 10929bp is as shown by SEQ ID NO.1, which contains two exons with a length of 1428bp and 3870bp, respectively, and an intron with a length of 5628bp. The expression method of the full-length gene of MiSp is by means of directional splicing via a trans-splicing reaction which cleaves the introns of a protein, and the recombinant expression of the native full-length spider silk protein MiSp gene of Araneus ventricosus in bacteria derived from E. coli is completed and the full-length protein of MiSp of Araneus ventricosus is obtained.

IPC Classes  ?

• C12N 15/12 - Genes encoding animal proteins
• C12N 15/63 - Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression

Abstract

One type of modified copolyester is copolymerized by monomers containing terephthalic acid, ethylene glycol, sodium isophthalic acid diester-5-sulfonate or potassium isophthalic acid diester-5-sulfonate, and the mixture of 2-methyl-1,3-propanediol and 2,2-dimethyl-1,3-propanediol. The molar ratio of 2-methyl-1,3-propanediol to 2,2-dimethyl-1,3-propanediol in the mixture is 10:90-90:10. The copolyester fibre can be dyed to dark color by boiling coloring method using cationic dye under atmospheric pressure, and the percentage of exhaustion is above 95%. Furthermore, the copolyester fibre has excellent resilience. The manufacturing process of the copolyester fibre has no special demand for devices and the cost is low, thus the manufacture is applicable to industrial production.

IPC Classes  ?

• C08G 63/688 - Polyesters containing atoms other than carbon, hydrogen, and oxygen containing sulfur
• C08G 63/183 - Terephthalic acids
• C08G 63/80 - Solid-state polycondensation
• D01F 6/84 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
• D06P 1/52 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances

Abstract

A dye bath formulation and a method for dyeing copolyester fiber or product thereof to deep black using the same are provided. Said copolyester comprises the following four monomeric units: terephthalic acid, glycol, m-phenyl binary acid alkane ester -5- sodium or potassium sulfonate, and aliphatic binary alcohol with side chain. The mol ratio of above four monomeric units is 1: 1.1-2.4: 0.05-0.20: 0.015-0.07. Said dye bath formulation comprises: cation black dyes of 5-10 owf% which selected from cation black dyes SD-FBL, cation black dyes X-O, cation black dyes X-RL, or their combination, and buffer system containing weak acid and weak acid strong base salt which can adjust pH value of the dye bath to 3-6.5.

IPC Classes  ?

• D06P 1/00 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed
• D06P 3/52 - Polyesters

Abstract

Preparation methods for copolyester and its fiber modified by aliphatic diol with side chains and isophthalic acid binary ester 5-sodium or potassium sulfonate are disclosed. The copolyester is copolymerized by four kinds of monomers comprising terephthalic acid, ethylene glycol, isophthalic acid binary ester 5-sodium or potassium sulfonate and aliphaticdiol with side chains. The method comprises the following steps: synthesizing the copolyester by charging ethylene glycol and terephthalic acid into a first esterification kettle to carry out esterification; then, conveying the reaction materials into a second esterification kettle, charging isophthalic acid binary ester 5-sodium or potassium sulfonate for further esterification, wherein an aliphatic diol with side chains and ethylene glycol and terephthalic acid are charged into the first esterification kettle at the same time, or an aliphatic diol with side chains and isophthalic acid binary ester 5-sodium or potassium sulfonate are charged into the second esterification kettle to carry out esterification; then, conveying the reaction materials into a condensation kettle for condensation polymerization and obtaining copolyester product; during the copolymerization, the mole ratio of terephthalic acid, ethylene glycol, aliphatic diol with side chains and isophthalic acid binary ester 5-sodium or potassium sulfonate is 1:1.1-2.4:0.05-0.20:0.015-0.07. The copolyester can be polymerized continuously and spun into fiber directly.

IPC Classes  ?

• C08G 63/183 - Terephthalic acids
• D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Abstract

Processes for producing carbon fiber, the filament thereof, and pre-oxidized fiber are provided. In one embodiment, the gel spinning of polyacrylonitrile filament is achieved by using small-molecule gelling agent, and the carbon fiber obtained thereby is improved by 15% to 40% in tensile strength and by 20% to 35% in toughness. In another embodiment, the melt spinning process of polyacrylonitrile is conducted by using imidazole type ion liquid as plasticizer, the process reduces environment pollution, is suitable for industrial production and the fiber produced thereby is improved in its strength. In yet another embodiment, polyacrylonitrile pre-oxidized fiber is produced by melt spinning, so low cost and controllable pre-oxidization of polyacrylonitrile can be achieved. In a further embodiment, high strength carbon fiber is manufactured by using polymer thickening agent. In another further embodiment, low cost and controllable pre-oxidization of polyacrylonitrile is achieved by conducting pre-oxidization before spinning, minimizing skin-core structure, so as to produce high performance carbon fiber, and reduce the production cost of carbon fiber greatly.

IPC Classes  ?

• D01D 5/08 - Melt-spinning methods
• D01D 1/02 - Preparation of spinning solutions
• D01D 10/00 - Physical treatment of man-made filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
• D01D 10/02 - Heat treatment
• D01D 10/06 - Washing or drying
• D01F 6/54 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polymers of unsaturated nitriles

Abstract

An atmospherically catalyzing and oxidizing method of refractory gold concentrate with high arsenic and high sulfur, comprises ① adding predefined ore, solid catalyst, acid and water into reaction container with stirrers to form ore pulp; ② continuously introducing gas oxidizer such as ozone and oxygen, or ozone and air into the pulp at 60-100℃, continuously stirring the mixture to form oxidized ore pulp, reacting for 6 to 18 hrs, then cooling to room temperature and filtering; ③In accordance with traditional extracting and filtering process, mixing the residue from the filtering step with calcium hydroxide solution to regulate its pH value to 11～12, adding sodium cyanide, stirring for 24 hrs, and filtering to extract noble metals from filtrate. The method improves the extraction rate of noble metals such as gold and silver in the refractory gold concentrate while reducing the environment pollution.

IPC Classes  ?

• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/08 - Sulfuric acid
• C22B 3/10 - Hydrochloric acid
• C22B 11/08 - Obtaining noble metals by cyaniding