The present invention provides an organic hypophosphite flame retardant as shown in formula (I). Compared with the prior art, the flame retardant provided by the present invention contains an aryl group, has high stability, relatively high phosphorus content and relatively high flame retardance, can be used for flame retardance of various high polymer materials such as polyurethane, epoxy resin and unsaturated polyester, and especially can endow a polyurethane material with good flame-retardant stability and good mechanical properties when being applied to polyurethane.
1216318456188 alkyl. When the organic phosphate flame retardant is applied to polyurethane foaming, a polyurethane raw material polyether can be endowed with good storage stability, and the polyurethane material can also be endowed with good flame-retardant stability and dimensional stability by the organic phosphate flame retardant.
The present invention relates to the technical field of flame retardance, and in particular, to a granular flame retardant, a preparation method therefor, and use thereof. The granular flame retardant comprises the following components in percentage by weight: 99.2-99.995% of a dialkyl phosphinate composition; and 0.005-0.8% of at least one of phosphate or silicate or aluminate. Aiming at the problems of large dust amounts and poor on-site use environment of flame retardants during preparation in the prior art, the present invention selects the specific dialkyl phosphinate composition as a raw material, coordinates same with the specific phosphate or silicate or aluminate in the present application, mixes them in percentage by weight, and then carries out granulation, thus successfully preparing the granular halogen-free flame retardant. The granular halogen-free flame retardant has moderate particle strength, so that the stability of the appearance and size during transportation and use can be ensured. Moreover, said flame retardant has good dispersion during use, and does not influence the mechanical properties, the mechanical performance, and the like of flame-retardant materials.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
The present invention relates to the technical field of flame retardancy, and particularly relates to a granular compound halogen-free flame retardant, and a preparation method therefor and the use thereof. The granular compound halogen-free flame retardant comprises a compound dialkyl phosphinate composition, a binder, and a dispersing agent. By adding the binder and the dispersing agent, granular compound halogen-free flame retardant particles can maintain appropriate strength, the problems of agglomeration and non-uniform dispersion of the granular compound halogen-free flame retardant in mixing and granulating processes are reduced, and the use effect of the granular compound halogen-free flame retardant in a polymer material is ensured.
Disclosed in the present invention are an aluminum diethylphosphinate crystal with a low fine powder content, and a preparation method therefor and the use thereof in flame retardance of glass fiber reinforced engineering plastics. In the present invention, a phosphorus-containing aluminum salt complex is used as a seed crystal and is added during the crystallization process of the preparation of aluminum diethylphosphinate, such that the crystallization process can be effectively regulated and controlled, diethylphosphinic acid crystal particles with a low fine powder content, a narrow distribution and a large particle size can be obtained, and the problem of existing aluminum diethylphosphinate powder being prone to bridging, unsmooth blanking, etc., can be solved. The present invention is suitable for a processing technology of halogen-free flame-retardant glass fiber reinforced engineering plastics. The prepared aluminum diethylphosphinate contains a small amount of phosphorus-containing aluminum salt complex seed crystals, and the flame retardant property of the aluminum diethylphosphinate is not affected.
A halogen-free flame retardant composition and an application thereof in flame retardancy of glass fiber reinforced engineering plastics. The composition of the halogen-free flame retardant composition comprises, in mass percent: 1%-99% of a phosphorus-containing aluminum salt complex based on aluminum methyl butyl phosphinate, 1%-99% of aluminum phosphite and/or a derivative thereof, 0-80% of aluminum diethylphosphinate, 0-40% of a nitrogen-containing compound, and 0-20% of a zinc salt thermally-stable compound. The halogen-free flame retardant composition is applied to flame retardancy of glass fiber reinforced engineering plastics, and has a low molding shrinkage characteristic; and a halogen-free flame retardant glass fiber reinforced engineering plastic prepared by using the halogen-free flame retardant composition can meet the UL94V-0 flame retardant standard.
A phosphorus-containing aluminum salt complex based on aluminum ethyl butyl phosphinate and a preparation method therefor and an application thereof. The phosphorus-containing aluminum salt complex can adjust the crystal form transformation of aluminum diethylphosphinate, change the crystal form transformation temperature and heat absorption/release of aluminum diethylphosphinate, even make the crystal form transformation disappear, can also be used as a flame retardant and a flame retardant synergist, is applied to flame retardance of high polymer materials, and reduce the negative effect of aluminum diethylphosphinate in some application fields due to crystal transformation.
A dialkyl phosphinate preparation method, comprising: using dialkyl phosphinate and a halogenated compound as raw materials, and reacting under the action of a catalyst to obtain dialkyl phosphinate, the catalyst being one or more of a phase transfer catalyst or an amphoteric compound, and comprising at least one of a cationic polyalkyl quaternary ammonium salt compound, a cationic halogenated polyalkyl quaternary ammonium salt compound, alkyl ammonium chloride, alkyl ammonium bromide, an anionic alkyl sulfate compound, alkyl sulfonate, alkylbenzene sulfonate, a nonionic surfactant, and a quaternary phosphonium salt. The dialkyl phosphinate is synthesized by using the dialkyl phosphinate and the halogenated compound as raw materials by means of a one-step method, and compared with existing traditional synthesis methods, the present invention has the advantages that the yield is higher, byproducts are few, separation is easy, the steps are simple, consumed time is short, the process is safe and environmentally friendly, costs are low, and implementation is easier.
C07F 9/12 - Esters of phosphoric acids with hydroxyaryl compounds
C07F 9/655 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having oxygen atoms, with or without sulfur, selenium, or tellurium atoms, as the only ring hetero atoms
C07F 9/11 - Esters of phosphoric acids with hydroxyalkyl compounds without further substituents on alkyl
12124311061010 arylene, alkylarylene, or arylalkylene; m is an integer from 1 to 3, and n is an integer from 1 to 3. The preparation method comprises: using dialkyl phosphinic acid metal salt and a halogenated epoxy compound as raw materials, and reacting same to obtain the dialkyl phosphonate compound. The advantages are: two structures of the dialkyl phosphinic acid and the active epoxy group are comprised at the same time; the active epoxy group can be used for preparing an alcohol, an ester, and an epoxy resin; the dialkyl phosphonate compound can be used as a flame-retardant agent, used alone or used after being mixed with other flame-retardant agents.
C07F 9/655 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having oxygen atoms, with or without sulfur, selenium, or tellurium atoms, as the only ring hetero atoms
C08K 5/5313 - Phosphinic compounds, e.g. R2=P(:O)OR'
C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
10.
ALUMINIUM PHOSPHITE-BASED COMPOSITE HAVING BIMODAL THERMAL WEIGHT-LOSS DECOMPOSITION CHARACTERISTICS, PREPARATION THEREOF AND USE THEREOF
332233x2333322. The bimodal thermal weight-loss decomposition characteristics comprise a first peak weight loss temperature between 460 and 490°C and a second peak weight loss temperature between 550 and 580°C. The preparation method comprises: aluminium phosphite and aluminium hydrogen phosphite are uniformly mixed according to a structural formula ratio, are heated in stepwise increasing temperature; the temperature of the mixture is heated from room temperature to no greater than 350°C at a temperature rise rate of no greater than 5°C/min; and the aluminium phosphite-based composite having bimodal thermal weight-loss decomposition characteristics is obtained. The composite can be used as or for preparing a flame retardant or a flame retardant synergist.
A crystalline aluminum phosphite, a preparation method therefor, and the use thereof for preparing a flame retardant or a flame retardant synergist. The process flow of the preparation method therefor involves: 1. reacting aluminum hydrogen phosphite with an aluminum-containing compound at a certain ratio in water at 80-110ºC in the presence of a small amount of concentrated phosphoric acid to obtain a precipitate; 2. washing and filtering the precipitate; 3. drying the precipitate at 100-130ºC until no water remains; and 4. continuing to heat the solid, from which water has been dried, in such a slow-rate stepwise ramp manner in which the temperature of the material is raised from room temperature to a temperature of no more than 350ºC within approximately 5-10 hours at a thermal ramp rate of no more than 5ºC/min. Compared with amorphous ammonium phosphite, the crystalline aluminum phosphite has a relatively high thermal decomposition temperature, a relatively low hydroscopicity, and a relatively weak acidity, can function synergistically with aluminum diethyl hypophosphite, has a relatively good flame retardance, and is used as a halogen-free flame-retardant component in a high molecular material.
Disclosed in the present invention are a halogen-free flame-retardant compounded system having resistance to high heat and high shear and high flame resistance, and an application thereof in a glass fiber reinforced material. The flame-retardant compounded system comprises the following components in percentage by weight: 40% to 99.9% of aluminum diethylhypophosphite, 0.1% to 50% of a poly/mono-phosphorous acid condensed hydrogen diphosphite salt and/or a condensed hydrogen diphosphite salt, 0-40% of inorganic aluminum phosphite, and 0-10% of a zinc-containing thermally stable compound. The structural formula of the poly/mono-phosphorous acid condensed hydrogen diphosphite salt and the condensed hydrogen diphosphite salt is represented by the following formula (I), where x is an integer from 0 to 6; n, y and p are integers from 1 to 4; and M is Ca, Mg, Al, Zn, Fe, Sn or Ti.
A poly/mono-hypophosphite hydrogen diphosphite compound, and the preparation and use thereof. The structural formula of the compound is shown in formula (I) as follows, wherein x is an integer of 1-6, n, y and p are integers of 1-4, and M is Ca, Mg, Al, Zn, Fe, Sn or Ti. The preparation method comprises: dissolving phosphorous acid and hydrophosphite in water, then adding concentrated phosphoric acid at 80-90ºC for reaction, drying moisture at a low temperature, and dehydrating same at a high temperature for reaction, washing and drying same. The compound has the advantages of a very high thermal decomposition temperature, a high phosphorus content, a good flame retardant property, a synergistic effect with diethyl aluminum hypophosphite, a low water absorptivity and a low acidity, and can be used as a halogen-free flame retardant component of a high polymer material.
C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
D06M 11/70 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorusTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with hypophosphorous, phosphorous or phosphoric acids or their salts
HALOGEN-FREE FLAME RETARDANT COMPOUND SYSTEM FOR GLASS FIBER REINFORCED NYLON AND APPLICATION THEREOF IN HALOGEN-FREE FLAME RETARDANT GLASS FIBER REINFORCED NYLON MATERIAL
Disclosed by the present invention is a halogen-free flame retardant compound system for glass fiber reinforced nylon, comprising the following raw material components according to weight percentage: 40-90% aluminum diethylphosphinate, 8-30% aluminum orthophosphite, 1-20% melamine metal phosphite and 1-10% zinc stannate. Disclosed by the present invention is a halogen-free flame retardant compound system for glass fiber reinforced nylon, the halogen-free flame retardant compound system having the characteristics of being highly flame retardant, being migration-free, and not corroding a device, thus overcoming the shortcomings of current aluminum diethylphosphinate-based phosphorus nitrogen compound flame retardant systems that are applied to glass fiber reinforced nylon materials; the compound system may be adapted well to a glass fiber reinforced nylon material system so as to obtain a halogen-free flame retardant glass fiber reinforced nylon material having excellent comprehensive performance.
Disclosed is a phosphor aluminium compound-based halogen-free flame retardant compound system, comprising the following raw material components which are calculated according to a total weight of 100%: 40-90% aluminum diethylphosphinate; 10-50% organic aluminum phosphite; 1-10% zinc salt thermostable compound; the structural formula of the organic aluminum phosphite is represented by formula (I), wherein R is selected from among a straight-chain aliphatic saturated hydrocarbon group having a carbon number of 1-6, a straight-chain aliphatic unsaturated hydrocarbon group or aryl. The halogen-free flame retardant compound system has the characteristics of being highly flame retardant, having no migration, not corroding devices and so on. The compound system be applied to glass fiber reinforced engineering plastics to obtain a halogen-free flame retardant glass fiber reinforced engineering plastic material that is used for preparing parts or articles in the field of electronic appliances.
An adsorption material having a targeted adsorption function and a preparation method therefor. The adsorption material is prepared by means of: adding a specific additive having liquid phase infiltration with a specific chemical substance into a polypropylene fiber agglomerating material, and blending the same with a high molecular super dispersing agent and a polypropylene resin; spinning out a fiber agglomerating material having a certain thickness by means of a spinning system, and then performing electrochemical processing on the fiber agglomerating material by means of low-temperature plasma bombardment to increase the surface roughness of the fiber, while an effective component of the additive is precipitated to the surface of the fiber; the fiber which is ultimately formed has a sufficiently low contact angle and a specific chemical infiltration feature so as to finally form an adsorption material having a targeted adsorption function. The production process of the product is non-toxic, non-polluting, environmentally friendly, and provides a high-quality material having a targeted adsorption function for chemical leakages and wiping.
B01J 20/30 - Processes for preparing, regenerating or reactivating
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
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
17.
HOT-ROLLING DEVICE FOR PRODUCING THREE-DIMENSIONAL ROLL COMPACTING COMPOSITE MATERIAL
The invention discloses a hot-rolling device for producing a three-dimensional roll compacting composite material. The hot-rolling device comprises a hot rolling pressure roller (1), the surface of the hot rolling pressure roller (1) is covered with a pattern layer (2). The pattern layer (2) is formed at the intersection of several groups of first helical lines (21) which helically protrude in the anti-clockwise direction and surround the pressure roller and several groups of second helical lines (22) which helically protrude in the clockwise direction and reversely surround the pressure roller. The included angle α1 between each first helical line (21) and the horizontal direction ranges from 0 degree to 90 degrees, the included angle α2 between each second helical line (22) and the horizontal direction ranges from 0 degree to 90 degrees. Intersection points of the first helical lines (21) and the second helical lines (22) are embossing points (23). On the basis of the existing hot rolling device, the pattern of the pressure roller is changed. Several sets of helical projections which are in inverse surrounding directions intersect with one another to form point pressure. In this way, the rolled non-woven fabric has a three-dimensional effect, the front and back sides have the same smoothness and consistent pattern and hand feeling, and the hot-rolling device can be better applied to the industry demand.
D04H 1/54 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
D04H 3/14 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
D06C 23/04 - Making patterns or design on fabrics by shrinking, embossing, moireing, or crêping
A flow-guide type absorbent pad for medical use formed, from inside to outside, of a polypropylene filament non-woven fabric (1), multiple layers of polypropylene melt-blown microfiber cloth (2) and a polyethylene anti-slip composite film (3), assembled by means of composite bonding. A tube (4) is fixedly bonded in the middle of the multi-layer polypropylene melt-blown microfiber cloth (2). On one side of the polyethylene anti-slip composite film (3), a strong double-sided adhesive tape is provided. The polypropylene filament non-woven fabric (1) and the polypropylene melt-blown microfiber cloth (2) are made of a corrosion-resistant polypropylene fiber material. The characteristics of the material itself can make the absorbent pad resistant to corrosion. The side that is in contact with the ground is made of polyethylene film and double-sided adhesive tape, which gives the absorbent pad good slip resistance; the tube is fixed in the middle and has good liquid guiding function to prevent the waste liquid from overflowing.
A61F 13/15 - Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the bodySupporting or fastening means thereforTampon applicators
A61L 15/24 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bondsDerivatives thereof
19.
AIR SUSPENSION DEVICE FOR UNIFORMLY DISPERSING AND CONVEYING STAPLE FIBERS
An air suspension device for uniformly dispersing and conveying staple fibers, comprising a fiber conveying device (1), a conveying space (2) and a receiving mesh device (3); two ends, at the left side and the right side, of the conveying space (2) being provided with a fiber inlet (21) and a fiber outlet (22) respectively; the receiving mesh device (3) being provided with a fiber-receiving mesh (31), a negative suction device (32) and a winding device (33), the fiber-receiving mesh (31) being mounted at the side close to the fiber outlet (22), the negative suction device (32) being positioned to face the fiber outlet (22), several air suspension holes (23) being provided at an upper wall and a lower wall of the conveying space (2), the negative suction device (32) being in communication with the air suspension holes (23) by means of an airflow duct to convey an airflow, so as to maintain a uniformly dispersed airflow within the conveying space (2). Said device uses air suspension technology to allow fibers to be subjected to the effect of the uniformly dispersed airflow in the up, down, left, and right directions upon entering the space from the space inlet. There is no resistance or friction between the fibers and the walls of the space during movement, and the fibers remain suspended in the airflow.
D04H 1/732 - 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 fluid current, e.g. air-lay
D04H 3/02 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
D01G 23/00 - Feeding fibres to machinesConveying fibres between machines
patents