220results about How to "High flame retardant efficiency" patented technology

The invention relates to a high-temperature-resistant nylon engineering plastic and a preparation method thereof, and belongs to the technical field of high polymer materials. The high-temperature-resistant nylon engineering plastic comprises the following components in parts by weight: 80-120 parts of nylon resin, 4-6 parts of inorganic filler, 4-6 parts of glass fiber, 2-10 parts of a heat-resistant modifier, 1-2 parts of a coupling agent, 1-3 parts of polyethylene wax, 0.5-1.5 parts of an antioxidant and 1-2 parts of a flame retardant, carbonyl and maleimide groups of the heat-resistant modifier strengthen intermolecular interaction and improve the glass transition temperature and the melting point, intermediate products 1 and 2 strengthen high temperature resistance, in addition, sulfonyl attracts electrons to strengthen thermal stability, tetrahydrofuran ring and acrylate are resistant to decomposition, and stability and water resistance are improved; boron and nitrogen of the flame retardant cooperate, a B-O-C carbon layer is formed at high temperature, flame-retardant gas is released, the flame-retardant property is remarkably improved, and the high-temperature-resistant nylon engineering plastic prepared by the preparation method has good high-temperature-resistant and water-resistant effects and also has excellent flame-retardant property.

The invention relates to an antibacterial PP material and a preparation method thereof, and belongs to the technical field of high polymer materials. The antibacterial PP material is prepared from the following components in parts by weight: 60 to 80 parts of PP resin, 2 to 4 parts of a surfactant, 0.5 to 1.5 parts of a modified antibacterial agent, 0.5 to 1.5 parts of a flame retardant and 0.2 to 0.8 part of an antioxidant, titanium ions in the modified antibacterial agent destroy bacterial cell walls, quaternized intermediate products react with proteins of cell membranes to accelerate bacterial death, and in addition, phenolic hydroxyl groups absorb ultraviolet rays with different wavelengths to inhibit the light aging process; a compact and continuous carbon layer is formed during combustion of the flame retardant and cooperates with phosphorus-oxygen double bonds and melamine, the flame retardant efficiency is improved, aluminum hydroxide coats the surface, hydroxyl is subjected to heat absorption decomposition during combustion, the surface temperature of combustible materials is stabilized, meanwhile, an inert aluminum oxide layer is formed, and the flammability is reduced. The antibacterial PP material prepared by the invention not only has good antibacterial and anti-aging effects, but also has excellent flame retardant property.

The invention relates to the field of sealing strips, and discloses a low-VOC (volatile organic compound) automobile sealing strip composite PVC (polyvinyl chloride) material and a preparation method thereof, the material comprises PVC resin, ethylene propylene diene monomer, a modified mesoporous ZIF-8 nano material, composite filler and the like; the modified mesoporous ZIF-8 nano material is prepared by grafting a hydroxylated antioxidant component on the surface of the mesoporous ZIF-8 nano material by using isophorone diisocyanate, and the hydroxylated antioxidant component is prepared by reacting N-(4-anilinophenyl) maleimide with 2-mercaptoethanol; the composite filler is prepared by grafting modified nano silicon dioxide and aminated basalt fiber, the modified nano silicon dioxide is prepared from phenylphosphoryl dichloride, diethanol amine, dibutyl phosphate and isophorone diisocyanate as raw materials, and the aminated basalt fiber is prepared by modifying with an aminated silane coupling agent; the modified mesoporous ZIF-8 nano material and the composite filler are added, so that the flame retardant property, the thermal aging resistance and the mechanical property of the material are improved.

The invention relates to a multifunctional polyester fiber based on modified graphene and a preparation method thereof, and belongs to the technical field of functional fibers. The preparation method comprises the following steps: dissolving dopamine hydrochloride, a benzaldehyde compound and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide into an alcoholic solution, so as to obtain a modified solution; under the alkaline condition and under the action of a catalyst, graphene is subjected to a polymerization reaction in the modified liquid, and modified graphene is obtained; granulating the modified graphene and polyester powder to obtain a multifunctional polyester master batch; the multifunctional polyester fiber based on the modified graphene is obtained by spinning the multifunctional polyester master batch and the polyester chip, the far infrared normal emissivity of the multifunctional polyester fiber is 0.90-0.93, the far infrared radiation temperature rise is 2.6 DEG C-3.3 DEG C, the breaking strength is 3.1 cN / detx-3.3 cN / detx, the limit oxygen index is 28.5%-29.1%, and the antibacterial property is higher than 99.9%.

The invention provides a DOPO-HQ-based flame retardant, a preparation method and application thereof, a flame-retardant anti-dripping PET composite material and preparation thereof, and belongs to the technical field of flame retardants. The DOPO-HQ-based flame retardant provided by the invention contains an efficient phosphorus-based flame retardant DOPO structure, so that the composite material can be endowed with efficient flame-retardant self-extinguishing performance; besides, the DOPO-HQ-based flame retardant contains a triazine structure, is high in thermal stability and has excellent high-temperature carbonization capacity, so that a large number of carbon layers are generated in the combustion process of the composite material and cover the surface of a base material, and the effects of molten drop resistance and smoke suppression are achieved. The thermal performance of the flame-retardant PET composite material prepared from the DOPO-HQ-based flame retardant is similar to that of pure PET, and the flame-retardant PET composite material has the characteristics of high flame-retardant efficiency, no halogen, no molten drop, low smoke release amount and the like under the condition of a small addition amount (2-8wt%) (the current commercially available flame-retardant anti-molten drop addition amount is greater than or equal to 15wt%).

The invention discloses a multifunctional coating with flame retardance, bacteriostasis and electromagnetic shielding as well as preparation and application of the multifunctional coating, and belongs to the technical field of textiles. The preparation method comprises the following steps: firstly, preparing a flame-retardant solution by combining phosphorylated sodium alginate and MXene, and padding a fabric into the solution to obtain a fabric with a flame-retardant function; the preparation method comprises the following steps: preparing a flame-retardant solution, adsorbing zanthoxylum bungeanum essential oil by adopting mesoporous silica to prepare a bacteriostatic agent solution, mixing the flame-retardant solution, the bacteriostatic agent solution and polyvinylpyrrolidone to obtain a flame-retardant and bacteriostatic composite solution, and padding a fabric into the flame-retardant and bacteriostatic composite solution to obtain a fabric with flame-retardant and bacteriostatic functions; mXene solution is sprayed on the fabric with the flame-retardant and antibacterial functions to serve as an enhanced electromagnetic shielding layer, and the multifunctional fabric with the flame-retardant, antibacterial and electromagnetic shielding functions is prepared. The flame-retardant solution and the bacteriostatic agent solution are both made of bio-based materials, have the advantages of being low in price, environmentally friendly and degradable, and can also be used as coatings to be applied to multiple fields.

The present invention relates to a graphene-modified multifunctional polyester fiber and a preparation method and an application in down filling, belonging to the technical field of down filling. The preparation method of the present invention comprises the following steps: S1, under the action of an acid binding agent, trimethylolethane and phosphorus oxychloride are reacted in a solvent in the first stage, and then graphene oxide is added for the second stage reaction to obtain modified graphene oxide; S2, the modified graphene oxide and polyester powder are granulated to obtain a multifunctional polyester masterbatch; S3, the multifunctional polyester masterbatch and polyester slices are spun to obtain a graphene-modified multifunctional polyester fiber. The far-infrared normal emissivity of the graphene-modified multifunctional polyester fiber is 0.89-0.92, the far-infrared radiation temperature rise is 2.3℃-3.1℃, the limiting oxygen index reaches 28.3%-29.0%, the antibacterial performance is higher than 99.9%, and the breaking strength is 3.2cN / detx-3.4cN / detx.

The invention relates to an antistatic functional plastic and a preparation method thereof, and belongs to the technical field of high polymer materials. The plastic with the antistatic function comprises the following components in parts by weight: 80-100 parts of polystyrene resin, 10-20 parts of glass fibers, 1-5 parts of an antioxidant, 2-8 parts of a light stabilizer, 5-10 parts of a modified antistatic agent and 0.3-0.6 part of a modified flame retardant, anhydride groups in the modified antistatic agent are dehydrated at a high temperature to form a conductive layer, static accumulation is effectively reduced, the anhydride groups and quaternary ammonium salt have a synergistic effect on static elimination characteristics and strong adsorption capacity, and meanwhile, the combustion speed is remarkably slowed down through heat absorption and catalysis of maleic anhydride; in the modified flame retardant, an alpha-amino alkyl phosphonate compound is decomposed to generate phosphorus-containing free radicals, a combustion chain is interrupted, nitrogen is released to inhibit combustion, the alpha-amino alkyl phosphonate compound and DOPO cooperate for flame retardance, the flame retardant efficiency is improved, and the prepared antistatic functional plastic has a good antistatic function and also has excellent flame retardant and tensile properties.

The invention belongs to the technical field of candle accessories, and particularly relates to a preparation method and application of a degradable candle container. The degradable candle container provided by the invention is prepared from the following raw materials in parts by mass: 60-100 parts of polylactic acid, 5-20 parts of filler, 5-20 parts of an environment-friendly flame retardant, 1-6 parts of a flame-retardant synergist and 0-7 parts of a performance additive, the modification additive comprises one or two of a polylactic acid modification additive and a filler modification additive; the polylactic acid modification auxiliary agent comprises one or two of maleic anhydride and dicumyl peroxide; the filler modification additive comprises one or more of a silane coupling agent and an alkali metal hydroxide solution; the filler comprises one or more of hemp, fiber and agricultural waste. The degradable candle container obtained by the invention not only has good flame retardant property, but also has excellent biodegradability and good processability and mechanical property, and can ensure the safety of candle combustion.

The invention belongs to the field of high polymer materials, and discloses a surface flame-retardant compatibilization glass fiber reinforced PPE / PS alloy material and a preparation method thereof, the alloy material comprises the following raw materials by weight: 10-84.98% of bulk flame-retardant MPPE resin; 5-35% of polystyrene resin; 10 to 40% of flame-retardant glass fiber; 0.01 to 10% of a flame retardant; 0.01 to 2% of a synergistic flame retardant; and 0-3% of other auxiliary agents. The prepared PPE / PS alloy material has excellent mechanical properties, processability and flame retardance, and can be used in the fields of household appliances, electric appliances, automobiles, optical fiber parts and the like.

The present invention relates to a multifunctional polyester fiber based on modified graphene and a preparation method thereof, and belongs to the technical field of functional fibers. The preparation method comprises the following steps: dissolving dopamine hydrochloride, benzaldehyde compounds and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide in an alcohol solution to obtain a modified solution; under alkaline conditions and the action of a catalyst, graphene is polymerized in the modified solution to obtain modified graphene; granulating the modified graphene and polyester powder to obtain a multifunctional polyester masterbatch; spinning the multifunctional polyester masterbatch and polyester slices to obtain a multifunctional polyester fiber based on modified graphene, wherein the far-infrared normal emissivity is 0.90-0.93, the far-infrared radiation temperature rise is 2.6°C-3.3°C, the breaking strength is 3.1cN / detx-3.3cN / detx, the limiting oxygen index is 28.5%-29.1%, and the antibacterial property is higher than 99.9%.

The invention relates to the technical field of preparation and application of multi-element synergistic flame retardants, in particular to a DOPO-based phosphorus-nitrogen-sulfur synergistic flame-retardant compound as well as a preparation method and application thereof. The preparation method of the DOPO-based phosphorus-nitrogen-sulfur synergistic flame-retardant compound comprises the following steps: (1) reacting 2-amino-1, 3, 4-thiadiazole with p-methylsulfonylbenzaldehyde to synthesize a Schiff base intermediate, and (2) adding DOPO to perform a phosphorus-hydrogen addition reaction to synthesize the DOPO-based phosphorus-nitrogen-sulfur synergistic flame-retardant compound. The DOPO-based phosphorus-nitrogen-sulfur synergistic flame-retardant compound is synthesized by adopting a one-pot method, and the reaction method is simple and efficient; besides, the DOPO-based phosphorus-nitrogen-sulfur synergistic flame-retardant compound has a multi-element (P, S and N) synergistic flame-retardant effect, the flame retardance of the epoxy resin can be remarkably improved, meanwhile, high transparency and stable mechanical properties of the epoxy resin can be kept, and the compound can be expanded to application in optical electronic products.

The invention belongs to the field of macromolecular flame-retardant materials, and particularly relates to a flame-retardant TPE (thermoplastic elastomer) material and a preparation method thereof. The flame-retardant TPE material is prepared from the following raw materials in parts by weight: 30 to 50 parts of styrene thermoplastic elastomer, 10 to 20 parts of polyolefin resin, 5 to 10 parts of extending oil, 15 to 20 parts of inorganic filler, 1 to 3 parts of flame retardant X, 0.1 to 1 part of antioxidant and 1 to 2 parts of coupling agent. The obtained TPE material has excellent flame retardant property and mechanical property, the V-0 flame retardant grade can be realized under the condition that the addition amount of the flame retardant is less than 3wt%, and the LOI value of the TPE material is as high as 38.1%.

The invention relates to the field of fire hoses, and provides a flame-retardant high-strength fire hose and a preparation method thereof.The fire hose sequentially comprises an outer protection layer, a flame-retardant layer, a woven layer, a reinforcing layer and a lining layer from outside to inside; the flame-retardant layer contains a surface-modified magnesium hydroxide micro-tube coated flame retardant, so that the flame-retardant effect is enhanced; the reinforcing layer contains the surface-modified bead-shaped silicon carbide nanowires, so that the mechanical property of the reinforcing layer can be remarkably improved. The five-layer composite structure and the design of multiple functional materials are adopted, comprehensive improvement of flame retardance, mechanical property, use convenience and the like is achieved, the problem that a traditional fire hose is insufficient in flame retardance and mechanical property is solved, and the fire hose has wide application value.

The invention discloses a high-impact-resistance thin-wall flame-retardant polycarbonate material, which is prepared from the following raw material components in parts by mass: 84.5 to 95 parts of polycarbonate, 0.5 to 1.5 parts of sulfonate flame retardant, 2 to 5 parts of phosphorus flame retardant, 1 to 5 parts of aminated polyacrylonitrile, 0.1 to 1 part of mesocarbon microbeads, 1 to 5 parts of toughening agent and 0.1 to 0.5 part of antioxidant, wherein the notch impact strength of the polycarbonate is greater than or equal to 80kJ / m < 2 >, and the melt index of the polycarbonate is 0.5-3g / 10min under the test conditions of 300 DEG C and 1.2 kg. According to the high-impact-resistance, thin-wall and flame-retardant polycarbonate material and the preparation method thereof, the high-impact-resistance, thin-wall and flame-retardant polycarbonate material has excellent stability and flame retardance and has wide application scenes.

The invention discloses cardanol basic characteristic mechanical enhanced flame-retardant epoxy resin containing aliphatic amine and a preparation method of the cardanol basic characteristic mechanical enhanced flame-retardant epoxy resin, and belongs to the technical field of flame retardance. The preparation method comprises the following steps: introducing an aldehyde group on a benzene ring of cardanol, and reacting with diamine to form an epoxy resin precursor substance; the preparation method comprises the following steps: fully mixing an epoxy resin precursor substance, epoxy chloropropane, a phase transfer catalyst and an alkaline substance for reaction to obtain cardanol basic intrinsic flame-retardant and mechanically-reinforced epoxy resin; the problems that raw materials of traditional bisphenol A type epoxy resin are non-renewable, the brittleness is large due to the molecular structure, flammability is caused, and the flame retardant property and the mechanical property cannot be considered at the same time are solved, biomass cardanol which is wide in source and low in cost is used as the raw material, and flexibility of an aliphatic chain and rigidity of aromatic hydrocarbon are combined; the Schiff base structure improves the flame-retardant efficiency of the matrix and also improves the mechanical properties of the matrix; the cured epoxy resin system has excellent thermal stability, flame retardance and mechanical properties, and has excellent popularization and application prospects.

The invention relates to a graphene oxide modified multifunctional down filler and a preparation method thereof, and belongs to the technical field of functional textiles. The preparation method comprises the following steps: S1, reacting graphene oxide, gallic acid and aminoethyl phosphoric acid in water under the action of laccase to obtain a modified graphene oxide dispersion liquid; s2, immersing down feather into the modified graphene oxide dispersion liquid for modification treatment, and then washing and drying to obtain the graphene oxide modified multifunctional down feather filler. The far infrared emissivity of the graphene oxide modified multifunctional down filler is 0.85-0.89, the far infrared radiation temperature rise is 2.4-2.9 DEG C, the antibacterial performance is higher than 94.3%, and the limit oxygen index is 28.2%-29.3%.

The present invention belongs to the technical field of flame-retardant fabrics, and relates to a method for preparing a durable flame-retardant nylon 6 fabric based on a reactive phosphorus-sulfur flame retardant, specifically: after adding nylon 6 fabric to a finishing solution containing a reactive phosphorus-sulfur flame retardant, a free radical initiator and a solvent a, reacting at 75-85°C for 6-8h to obtain a durable flame-retardant nylon 6 fabric; the limiting oxygen index of the durable flame-retardant nylon 6 fabric is higher than 29.3%, the damaged length is lower than 10.5cm, no molten droplets are generated, and after 40 washes, it can still pass the vertical burning test, the damaged length is lower than 14.4cm, and no molten droplets are generated. The flame-retardant nylon 6 fabric prepared by the method of the present invention has good flame retardant effect and excellent water-washing resistance.

The invention relates to a quick-dry cooling textile integrating flame retardance, antibiosis, radiation cooling and evaporative cooling as well as preparation and application of the quick-dry cooling textile, and belongs to the technical field of functional finishing of textiles. The preparation process is simple, the cost is low, and the prepared textile has good flame retardance, antibiosis, one-way moisture conduction and cooling performance and can be applied to the fields of personal heat management, fire protection, building cooling, antibiosis and the like.

The invention discloses a synergistic flame retardant with a core-shell structure and a preparation method and application thereof.The preparation method comprises the steps that a certain amount of phosphoric acid is weighed and poured into a three-neck flask, oil bath stirring heating is conducted, and urea is added when a certain temperature is reached; continuously heating and stirring, adding titanium dioxide, keeping the temperature and stirring, pouring a product into a tray, baking and curing in a baking oven, and crushing substances to obtain the ammonium polyphosphate-titanium dioxide composite flame retardant. And adding ammonium polyphosphate-titanium dioxide into a three-neck flask filled with the organic polymer solution, stirring at room temperature, and heating at negative pressure to remove the organic solvent, thereby finally obtaining the ammonium polyphosphate-titanium dioxide and organic polymer core-shell structure flame retardant. When the flame retardant is added into the silicone rubber, the flame retardant effect of the silicone rubber reaches UL94-V0 level. The prepared flame retardant contains nitrogen and phosphorus elements, is high in flame retardant efficiency, and solves the problem that an addition type silicone rubber platinum catalyst loses efficacy when encountering poisoning of compounds containing nitrogen and phosphorus elements due to the fact that the surface of the flame retardant is coated with a layer of polypropylene wax shell.

The invention relates to the technical field of polyethylene film preparation, in particular to an antistatic polyethylene composite film and a preparation method thereof.The polyethylene composite film is sequentially provided with a heat sealing layer, a blocking layer and a surface layer from inside to outside, and the surface layer and the heat sealing layer are prepared from, by weight, 55-65 parts of low-density polyethylene, 5-10 parts of polyethylene, 5-10 parts of polyethylene, 5-10 parts of polyethylene and 5-10 parts of polyethylene. 9-12 parts of ultra-high molecular weight polyethylene, 1-3 parts of a compatilizer, 6-10 parts of an antistatic agent and 8-15 parts of a flame retardant; and the barrier layer is made of ethylene-vinyl alcohol copolymer resin. The antistatic polyethylene composite film provided by the invention realizes excellent and lasting antistatic performance, the antistatic agent uniformly distributed in the film ensures rapid conduction and dispersion of electrostatic charges, and the problem of non-uniform antistatic performance is effectively solved; meanwhile, by introducing benzotriazole groups and silver nanoparticles, a stable antistatic network structure is formed, and the durability of the antistatic effect is greatly improved.

The invention discloses a modified epoxidized polybutadiene-containing layer-adding adhesive film for an FC-BGA packaging carrier plate as well as a preparation method and application of the modified epoxidized polybutadiene-containing layer-adding adhesive film. The layer-adding adhesive film is prepared from the following components in parts by weight: 45 to 100 parts of epoxy resin, 40 to 100 parts of inorganic filler, 25 to 45 parts of cyanate ester, 35 to 55 parts of bismaleimide, 5 to 10 parts of graphite and 10 to 20 parts of modified epoxidized polybutadiene. The preparation method of the modified epoxidized polybutadiene comprises the following steps: dissolving carboxyl-terminated polybutadiene in a first organic solvent, adding a formic acid solution and a hydrogen peroxide solution, and reacting to obtain carboxyl-terminated epoxidized polybutadiene; the preparation method comprises the following steps: dissolving carboxyl-terminated epoxidized polybutadiene in a first organic solvent, then adding (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide), and carrying out a reaction so as to obtain the modified epoxidized polybutadiene. During combustion, phosphorus groups contained in the modified epoxidized polybutadiene generate phosphaphenanthrene groups in a gas phase, free radicals of gas-phase cracking gas can be captured, a stable structure is formed, the free radical quenching effect is achieved, and the flame retardant efficiency of the layer-adding adhesive film is improved.

The invention provides a high-strength high-toughness low-smoke halogen-free flame-retardant rat-proof cable sheath material and a preparation method thereof, and the cable sheath material comprises the following raw materials: 80.0-100.0 parts of a polymer matrix, 80.0-100.0 parts of an inorganic flame retardant, a functional biomass rat-proof agent, 2.0-4.0 parts of a vulcanizing agent and 0.5-1.0 part of a vulcanization accelerator, wherein the functional biomass rat-proof agent is prepared from bio-based dihydric alcohol, bio-based diisocyanate and capsaicin through a one-pot method, and the cable sheath material is obtained by adding the raw materials into an extruder in proportion for melting, blending and extruding and then carrying out cooling curing, traction, grain-sized dicing and drying. The obtained cable sheath material has high strength, high toughness, high flame retardance and long-acting rat-proof performance, and meets the requirements of high mechanical property, flame retardance and long-acting rat-proof performance of materials in the field of cables.

The invention belongs to the technical field of novel flame-retardant materials, and particularly relates to a DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) modified nano flame retardant as well as a preparation method and application of the DOPO modified nano The invention provides a DOPO modified hybrid material (DOPO (at) MXene and DOPO (at) CB) which is synthesized by taking DOPO as a phosphorus flame retardant and MXene and nano carbon black (CB) as templates and adopting an in-situ preparation method, and the material has the characteristics of phosphorus efficient flame retardance and nano flame retardance, and shows a very good synergistic flame retardant effect in a composite material. As an efficient flame retardant, the material can be applied to the field of flame retardance of polyester fiber master batches (PET), so that a PET / DOPO modified nano flame retardant composite material has better flame retardance and molten drop resistance and has a good application prospect.

The invention belongs to the technical field of high polymer materials, and relates to an unsaturated polyester resin-based halogen-free flame-retardant material as well as a preparation method and application thereof. The unsaturated polyester resin-based halogen-free flame-retardant material is prepared from the following components in parts by weight: 30 to 50 parts of intrinsic flame-retardant unsaturated polyester resin prepolymer, 5 to 20 parts of unsaturated hydroxy fatty acid, 10 to 40 parts of flame retardant aluminum hydroxide, 5 to 20 parts of black scale nanosheet modified by non-covalent interaction of ionic liquid, 1 to 2 parts of initiator, 1 to 3 parts of antioxidant and 5 to 10 parts of polyester plasticizer. Monomers containing flame-retardant elements are polymerized into unsaturated polyester resin in situ, and meanwhile, the modified flame retardant containing unsaturated double bonds, unsaturated hydroxy fatty acid and other components are added, so that the flame-retardant property and mechanical property of the material can be effectively improved.

The invention discloses a flame-retardant antibacterial Lyocell fiber material as well as a preparation method and application thereof, and belongs to the technical field of cellulose fiber material preparation. Comprising the following steps: (1) adding a chitosan solution into a flame retardant solution or dispersion liquid to prepare a microcapsule blending type flame retardant; (2) adding the microcapsule blended flame retardant and a cross-linking agent into a cellulose spinning solution to obtain a flame-retardant cellulose spinning solution; and (3) spinning the flame-retardant cellulose spinning solution by adopting a wet spinning process to obtain the flame-retardant antibacterial Lyocell fiber material. Chitosan is used for coating a phosphorus-containing flame retardant to construct a microcapsule blended flame retardant, the microcapsule blended flame retardant has good compatibility with cellulose, and the defects that a traditional blended cellulose spinning solution is prone to layering and uneven in dispersion are overcome.

The invention discloses tough, flame-retardant and hydrophobic reactive polyurethane (RPU) based on polyhydroxy ammonium polyphosphate as well as a preparation method and application thereof, and belongs to the crossing field of flame-retardant materials and multifunctional polymers. The specific preparation process is as follows: diglycolamine is grafted to the surface of ammonium polyphosphate through a one-pot ion exchange reaction, and hydroxylated ammonium polyphosphate (aAPP) is prepared. The preparation method comprises the following steps: preparing an aAPP-NCO double-end-capped prepolymer, then carrying out an addition polymerization reaction on the aAPP and the NCO double-end-capped prepolymer under a medium-free condition to prepare flame-retardant RPU (aAPPx-RPU), further introducing polydimethylsiloxane (PDMS) into an RPU main chain, and preparing the tough, flame-retardant and hydrophobic RPU by utilizing the synergistic effect of phosphorus (P), nitrogen (N) and silicon (Si). The preparation method of the tough, flame-retardant and hydrophobic RPU is green and efficient, and can be applied to the fields of fireproof flame-retardant materials, building materials, electronic materials and the like which need to improve safety and durability.

The invention relates to a graphene oxide modified multifunctional down jacket fabric and a preparation method thereof, and belongs to the technical field of functional fabrics. The preparation method comprises the following steps: S1, under the action of laccase, graphene oxide, tannic acid and 4-phenyl-3-thiosemicarbazide are subjected to a reaction in a solvent, and modified graphene oxide is obtained; s2, grinding the modified graphene oxide, a defoaming agent and an adhesive in water to obtain a modified graphene oxide dispersion liquid; s3, a chinlon fabric is soaked in the modified graphene oxide dispersion liquid for two-time soaking and two-time rolling treatment, then pre-drying and baking are conducted, and the graphene oxide modified multifunctional down jacket fabric is obtained. The far infrared emissivity of the graphene oxide modified multifunctional down jacket fabric is 0.89-0.92, the far infrared radiation temperature rise is 2.9-3.3 DEG C, the antibacterial property is higher than 86.9%, the limit oxygen index is 29.1%-30.6%, the dry rubbing color fastness is level 4 or above, and the wet rubbing color fastness is level 3-4 or above.

The utility model relates to the technical field of hollow plastic plates, in particular to a flame-retardant hollow plastic plate which comprises a mounting frame, a hollow plate, a sealing plate and a filtering plate, the mounting frame is arranged in a cross shape, connecting plates are fixedly connected to the four corners of the outer wall of the mounting frame, a connecting groove is formed in the outer wall of one side of the hollow plate, and the sealing plate is arranged in the connecting groove. The connecting plate is matched with the connecting groove in size, a first mounting hole is formed in the outer wall of one side of the top end of the hollow plate, a second mounting hole is formed in the outer wall of the top end of the connecting plate, mounting grooves are formed in the outer walls of the two sides of the two sides of the mounting frame, and the sealing plate and the filter plate are matched with the mounting grooves in size. According to the hollow plastic plate, the mounting frame arranged in the cross shape can be used for connecting and mounting four hollow plates at the same time, a plurality of groups of hollow plates can be spliced conveniently only by aligning the mounting frame, a water inlet position and a water spraying position can be connected, the cost is reduced, meanwhile, the flame-retardant effect is improved, and the flame-retardant efficiency of the hollow plastic plate is improved.

The invention provides a flame retardant for a PVC (polyvinyl chloride) wire and cable material. The flame retardant is prepared from the following raw materials: urea, phosphoric acid, acidic lignin and pentaerythritol. The weight ratio of the urea to the phosphoric acid to the acidic lignin to the pentaerythritol is 1: (0.8-1): (0.1-0.5): (0.01-0.05). As the flame retardant for the PVC wire and cable material integrates an acid source, a gas source and a carbon source, the flame retardant has strong polarity; according to the embodiment of the invention, the acidic lignin and the pentaerythritol are used as carbon sources, the phosphoric acid is used as an acid source, and the urea is used as a gas source, so that the prepared flame retardant is a carbon-phosphorus-nitrogen ternary synergistic intumescent flame retardant, is high in flame retardant efficiency, and is green and environment-friendly. The flame-retardant PVC wire and cable material prepared based on the flame retardant has the advantages of high tensile strength, strong ultraviolet aging resistance, obvious intumescent flame-retardant effect, simple preparation process, greenness, environmental protection and easiness in industrial production.