157 results about "Zinc borate" patented technology

The environment-friendly cable ethylene-propylene insulation material comprises the following raw materials: ethylene propylene diene monomer, an elastomer, a reinforcing agent, a flame retardant, a vulcanizing activator, a filler, a plasticizer, an anti-aging agent, a vulcanizing agent and a silane coupling agent. 50-70 parts by mass of ethylene propylene diene monomer rubber; the elastomer is a POE (polyolefin elastomer) of 30-50 parts; the flame retardant is prepared from 30 to 50 parts of nano magnesium hydroxide, 5 to 10 parts of microencapsulated red phosphorus and 3 to 5 parts of zinc borate; and the plasticizer is paraffin oil. According to the ethylene-propylene insulating material, a halogen-free flame-retardant system is combined with an interface modification technology, so that the defects of poor mechanical property and high material toxicity of a traditional material are overcome. The oxygen index is greater than or equal to 38%, the tensile strength is greater than or equal to 10Mpa, and the material is suitable for high-risk mine environments.

The invention relates to a composite powder explosion suppressant for suppressing aluminum hydride explosion and a preparation method of the composite powder explosion suppressant, belongs to the technical field of explosion suppressants, and solves the problems of single action mechanism, high required explosion suppression concentration, low efficiency and the like of a traditional explosion suppressant. According to the solution, the composite powder explosion suppressant for suppressing aluminum hydride explosion is prepared through raw material pretreatment, powder mixing and drying in sequence, and the composite powder explosion suppressant is prepared from the following components in parts by mass: 10.2 to 30.2 parts of melamine cyanurate, 20.4 to 40.6 parts of monopotassium phosphate, 15.2 to 25.2 parts of potassium bicarbonate, 8.4 to 13.2 parts of aluminum hydroxide, 6.8 to 11.1 parts of zinc borate, 5.0 to 9.0 parts of fumed silica and 2.0 to 5.3 parts of calcium silicate. The explosion suppressant can act on different combustion areas and combustion stages in the aluminum hydride explosion process, the physical and chemical explosion suppression effects of all the components of the explosion suppressant are fully exerted, and meanwhile, efficient explosion suppression of aluminum hydride explosion can be achieved through the synergistic effect of all the components.

The invention relates to the technical field of graphene modification, and particularly discloses a preparation method of zinc borate modified graphene, which comprises the following steps: ultrasonically dispersing graphene in water to obtain 0.5-1g / L graphene dispersion liquid; adding a dispersing agent, a 0.08-0.12 mol / L borax aqueous solution and ethanol into the graphene dispersion liquid, uniformly mixing, and then dropwise adding a 0.08-0.12 mol / L zinc sulfate aqueous solution under the stirring action; then carrying out a reaction through microwave heating at the temperature of 50-70 DEG C under the power of 100-300 W for 20-30 min; after the reaction is finished, filtering, washing and drying to obtain zinc borate modified graphene. According to the preparation method of the zinc borate modified graphene, provided by the invention, a uniform, complete and compact shell layer can be formed on the surface of the graphene through in-situ self-assembly, so that the surface of the graphene is textured, and the dispersion uniformity and dispersion stability of the graphene in an oil phase system are improved.

The invention relates to the technical field of cables, and provides a fireproof flame-retardant cable and a preparation method thereof. The fireproof flame-retardant cable comprises a conductor, an insulating layer and a sheath layer which are sequentially arranged from inside to outside, and the sheath layer is prepared from, by weight, 40-50 parts of high-density polyethylene, 30-40 parts of ethylene-vinyl acetate copolymer, 30-40 parts of flame retardant, 15-20 parts of filler, 8-10 parts of plasticizer, 2-4 parts of lubricant, 2-4 parts of antioxidant, 2-3 parts of stabilizer and 2-3 parts of cross-linking agent; the flame retardant is prepared from the following component raw materials in parts by weight: 30 to 40 parts of magnesium hydroxide, 10 to 15 parts of aluminum hydroxide, 4 to 5 parts of zinc borate, 3 to 4 parts of diethyl phosphoryl ethyl triethoxy silane and 1 to 1.5 parts of 2-(2-pyridyl) ethyl trimethoxy silane. According to the technical scheme, the problem of insufficient fireproof and flame-retardant performance of the cable in the prior art is solved.

This invention discloses a bio-based flame-retardant thermally expanding powder coating and its preparation method, relating to the field of coatings. It comprises the following components: bio-based epoxy resin, phenolic epoxy curing agent, ammonium polyphosphate, nano-titanium dioxide, zinc borate, expanded graphene, 8-12 parts of imidazole, benzoin, and a leveling agent. The bio-based epoxy resin is prepared by ring-opening copolymerization of cashew phenol glycidyl ether and linoleic acid prepolymer, followed by epoxy end-capping, with an epoxy equivalent of 900-1200 g / eq; the phenolic epoxy curing agent has an epoxy equivalent of 200-250 g / eq; and the expanded graphene has an initial expansion ratio of 200-300 times. The preparation method employs a two-step, staged mixing process. This invention, while maintaining zero VOC in powder coatings and the same film thickness, achieves for the first time the outstanding performance of 6H hardness, UL94V-0 flame retardancy, and 120 times expansion ratio through the systematic synergy of high epoxy equivalent bio-based resin, four-component complete flame retardant system, specific EG:APP ratio, and two-step process.

This application relates to the field of cable materials, specifically disclosing a low-smoke, low-halogen polyvinyl chloride (PVC) cable material and its preparation method. The material includes the following raw materials: polyvinyl chloride resin, EVM500 rubber, heat stabilizer, antioxidant, plasticizer, lubricant, filler, flame retardant, flame retardant synergist, and acrylate processing aids. The flame retardant includes a mixture of aluminum hydroxide and magnesium hydroxide, and the flame retardant synergist includes a zinc borate and ammonium octamolate-sepiolite composite. The preparation method includes the following steps: mixing the raw materials according to a specified ratio, then melting and mixing them, followed by granulation and extrusion molding to obtain the low-smoke, low-halogen PVC cable material. This application alleviates the problem of traditional PVC cable materials producing large amounts of black smoke and toxic gases during combustion, reduces smoke density, and improves the material's environmental performance and flame retardant properties.

This invention belongs to the field of cable technology, specifically a thin-walled oxygen-barrier high-temperature resistant cable, comprising a conductor core and a thin-walled outer sheath. The conductor core has a high-temperature resistant insulation layer made of polyetheretherketone (PEEK) composite material on its outer side. Between the high-temperature resistant insulation layer and the thin-walled outer sheath, from the inside out, are sequentially arranged a ceramicized oxygen barrier layer and a flame-retardant reinforcement layer. The ceramicized oxygen barrier layer is a nano-modified ceramicized silicone rubber layer with a thickness of 0.05–0.15 mm, including an outer layer doped with silicon carbide whiskers and an inner layer doped with zinc borate. This invention prepares an ultra-thin ceramicized layer through gradient doping, resolving the contradiction between thin-walled design and oxygen barrier properties, and effectively improving the interfacial peel strength. This reduces the cable's outer diameter and bending radius, making the cable lightweight and suitable for high-dynamic applications.

This invention discloses a flame-retardant rubber and its preparation method. The flame-retardant rubber, by weight, comprises: 45-65 parts of ethylene-vinyl acetate copolymer; 12-20 parts of ethylene propylene diene monomer (EPDM) rubber; 3-6 parts of maleic anhydride-grafted ethylene-vinyl acetate copolymer; 8-12 parts of phosphorus-modified nanocellulose; 2-5 parts of submicron zinc borate; 2-4 parts of melamine polyphosphate; 0.5-2.5 parts of graphene; 1-2.5 parts of phosphorus-containing flame-retardant plasticizer; and 1-4 parts of multifunctional acrylate crosslinking agent. This application replaces traditional melamine with melamine polyphosphate (MPP). MPP has higher thermal stability, its decomposition temperature matches the char formation window of P-NC more closely, and it has its own phosphorus source, enabling a complementary and continuous phosphoric acid supply with P-NC on both the time and temperature axes, thus solving the problem of insufficient phosphorus catalysis after reducing the amount of P-NC alone.

The invention provides a flame-retardant polyethylene master batch filled with magnesium hydroxide and a preparation method of the flame-retardant polyethylene master batch, and relates to the field of flame-retardant materials. The flame-retardant polyethylene master batch filled with magnesium hydroxide comprises the following raw materials in parts by mass: 8-20 parts of linear low-density polyethylene, 3-6 parts of an ethylene-octylene copolymer, 60-80 parts of modified magnesium hydroxide powder, 8-12 parts of montmorillonite powder, 3-5 parts of zinc borate, 2-5 parts of graphite powder, 1-4 parts of a lubricant, 4-8 parts of a coupling agent, 2-4 parts of barium stearate and 0.5-2 parts of an antioxidant. Compared with a common polyethylene material, the flame-retardant polyethylene master batch filled with magnesium hydroxide prepared by the invention has higher flame retardance, smoke suppression and carbon forming properties, also improves the dripping resistance of the polyethylene material, and can be used for preparing products such as polyethylene wires and cables, polyethylene foam boards, polyethylene pipes and the like.

The invention provides a core-shell structure composite flame-retardant synergist, a preparation method and application thereof, an intumescent fireproof coating, and preparation and application thereof, and belongs to the technical field of fire-fighting materials. Through a coprecipitation method, ammonium polyphosphate APP and melamine MEL which exist independently traditionally are compounded and assembled at a molecular level on the surface of a zinc borate particle serving as an anchor point to form a core-shell integrated functional particle. At the high temperature of a fire, due to close contact and extremely short reaction path of APP and MEL of the shell layer, violent dehydration, gasification and cross-linking reaction can be instantly generated, strong expansion driving force with more controllable directionality is generated, the expansion efficiency is greatly improved, and the coating fire resistance, carbon layer quality and durability of the fireproof coating can be remarkably improved.

The invention relates to the technical field of cable insulation materials, in particular to an anti-aging chemical crosslinked polyethylene cable insulation material and a preparation process thereof. The insulating material is prepared from the following components in parts by mass: 50 to 60 parts of low-density polyethylene, 20 to 25 parts of polyolefin elastomer, 10 to 15 parts of maleic anhydride grafted SEBS (Styrene-Ethylene-Butylene-Styrene), 1.5 to 2.5 parts of dicumyl peroxide, 15 to 20 parts of composite flame-retardant filler and 3 to 5 parts of anti-aging composition, the preparation process comprises the following three steps: firstly, preparing the core-shell structure flame-retardant master batch of zinc borate coated talcum powder through ball milling and melt blending; secondly, mixing the anti-aging component with a polyolefin elastomer to prepare an anti-aging master batch; and finally, mixing the matrix resin with the two master batches and the cross-linking agent, carrying out reactive extrusion in a four-section temperature zone (150-195 DEG C), and carrying out water-cooling cutting and drying to obtain a finished product. The insulating material has the characteristics of no toxicity, long-term high temperature resistance, aging resistance and excellent flame retardance, and is suitable for low-voltage to medium-voltage power cables.

The invention relates to the technical field of insulating materials, and discloses a flame-retardant electrical insulating paste and application thereof, the insulating paste is formed by independently packaging a component A and a component B; the component A comprises bisphenol A epoxy resin, polycaprolactone diol, aluminum diethylphosphinate, zinc borate, an epoxy group functionalized silane oligomer and the like; the component B comprises methylhexahydrophthalic anhydride and zinc acetylacetonate; a component A is prepared through a melt coating and thermal dilution process, and filler dispersion and interface modification are assisted by using molten polycaprolactone; according to the insulating glue, the process viscosity is effectively reduced by utilizing the phase change characteristic of polycaprolactone, a cured product is endowed with cold and heat impact toughness, a damp and heat aging resistant interface is constructed through the silane oligomer, and a high flame retardant grade is realized by combining a halogen-free flame retardant system. The product provided by the invention has excellent potting manufacturability, cracking resistance and aging-resistant insulativity, and is suitable for potting protection of a driving motor and a high-voltage transformer of a new energy automobile.

The invention relates to the technical field of coatings, in particular to an oily fireproof coating and a preparation method thereof. The oily fireproof coating is prepared from the following components in parts by weight: 15 to 19 parts of modified epoxy resin, 5 to 7 parts of organic silicon modified acrylic resin, 10 to 12 parts of silane modified ammonium polyphosphate, 5 to 8 parts of pentaerythritol, 3 to 5 parts of zinc borate, 10 to 12 parts of hydrotalcite coated zinc stannate composite material, 9 to 11 parts of boron nitride, 0.8 to 1.2 parts of dispersing agent, 0.2 to 0.4 part of flatting agent and 0.6 to 0.8 part of polyamide wax anti-settling agent. And 40-60 parts of a solvent. According to the oily fireproof coating provided by the invention, the fire endurance and flame retardance of the coating are improved, and the optimal fireproof protection effect is achieved; the compatibility of ammonium polyphosphate and an oleoresin matrix is improved, and the fireproof performance, the long-term storage stability and the medium corrosion resistance of a cured coating are improved.

The application discloses borosilicate 4.0 fireproof glass and a preparation method thereof, and belongs to the field of high-borosilicate fireproof glass. The borosilicate 4.0 fireproof glass comprises a first glass layer and a second glass layer; a modified silica composite fireproof liquid is filled between the first glass layer and the second glass layer; the first glass layer and the second glass layer are borosilicate 4.0 glass; and the modified silica composite fireproof liquid comprises the following components in parts by weight: modified silica 10-20 parts, silica 5-8 parts, modified zinc borate 5-10 parts, water glass 3-5 parts, potassium silicate 8-12 parts, modified zirconium phosphate 1-3 parts and other additives 1-2 parts. The borosilicate 4.0 fireproof glass has high fire resistance, good weather resistance and good material stability of the fireproof liquid.

This invention relates to the field of polymer composite materials technology, and discloses a material and manufacturing process for resistance to damage and staining. The manufacturing process includes: weighing unsaturated polyester resin, aluminum hydroxide and / or magnesium hydroxide, quartz powder and / or calcium carbonate, organically modified montmorillonite, ammonium polyphosphate crystal form II, and anhydrous calcium borate according to the formula, mixing them to form a homogeneous slurry, then casting it into a gel mold, and finally curing and demolding it to obtain the product. This invention uses high aspect ratio organically modified montmorillonite sheets to fill the micropores on the surface of the product, and uses anhydrous calcium borate to replace zinc borate containing crystal water to eliminate pores during the curing stage. The two work synergistically to reduce surface porosity and achieve long-lasting stain resistance; using extremely low water solubility ammonium polyphosphate crystal form II to replace water-soluble phosphates ensures long-term stable flame retardant performance and batch consistency; the absence of anhydrous calcium borate eliminates interference with curing accelerators, resulting in stable molding quality; and each flame-retardant component takes effect sequentially in the low-temperature, medium-temperature, and high-temperature ranges, forming continuous flame-retardant protection across the entire temperature range.

The invention belongs to the technical field of coating preparation, and provides a fireproof heat-insulating nano ceramic coating for a lithium battery and a preparation method of the fireproof heat-insulating nano ceramic coating. The coating is a water-based two-component system, in a first component, bisphenol A diglycidyl ether, compound colloidal silicon dioxide, boehmite and nano zirconium oxide and / or nano aluminum oxide are used for constructing a ceramic skeleton, and aerogel, hollow glass beads, expanded vermiculite and / or flaky mica and inorganic fibers are combined to form a heat insulation network; the flame-retardant system contains ammonium polyphosphate, pentaerythritol, melamine components, zinc borate and sealing glass powder, silane interface bonding components and thermal expansion microspheres are introduced, an expansion thermal insulation layer is formed when the flame-retardant system is heated, and the flame-retardant system is densified into a hard shell at high temperature; the second component is a water dispersible amine curing agent; the preparation method comprises the following steps: adding the interface bonding components step by step, and sequentially compounding the inorganic phase and the flame-retardant heat-insulating phase to obtain the double-component packaged coating which is suitable for safety protection of a lithium battery system.

The invention provides a silicon dioxide ceramic aerogel material and a preparation method thereof, and relates to the field of thermal insulation materials. The preparation method of the silicon dioxide ceramic aerogel material comprises the following steps: S1, adding a surfactant and water into a beaker in proportion, then adding tetraethyl silicate and vinyl trimethoxy silane, and heating and stirring the solution in the beaker to obtain a silicon dioxide precursor; and S2, sequentially adding gelatin, montmorillonite and zinc borate into the silicon dioxide precursor, carrying out primary ultrasonic treatment, carrying out ultrasonic treatment on the obtained solution again, and carrying out liquid nitrogen directional freezing and drying treatment on the solution after the ultrasonic treatment is completed, so as to obtain the silicon dioxide ceramic aerogel material. The CTAB can form a microporous structure in the preparation of the aerogel, so that the porosity of the aerogel is increased. Meanwhile, the CTAB can improve the looseness and dispersity of the aerogel, reduce the contact area between solid particles in the aerogel and reduce the heat transfer path, so that the heat conductivity is reduced.

The invention relates to the technical field of graphene materials, and discloses a modified graphene material and a preparation method thereof.The preparation method comprises the steps that sodium lignin sulfonate is used for modifying graphene oxide through pi-pi stacking, and water-based stable dispersion liquid is prepared; saponified abietic acid is introduced, so that a abietic acid radical tricyclic hydrophobic skeleton is attached to the surface of graphene; compounding tung oil emulsion, performing free radical oxidation polymerization on alpha-eleostearic acid conjugated triene double bonds at the normal temperature of 15-35 DEG C to form a film, and covalently bonding graphene into an organic film-forming system through phenol-oxygen free radical coupling; zinc borate is added, zinc ions catalyze and solidify and promote generation of zinc abietate, and borate radicals and sodium lignin sulfonate hydroxyl form an inorganic borate cross-linked network; and adjusting the solid content and grinding to obtain a finished product. The prepared conductive ink is self-dried and cured at normal temperature, a cured coating has excellent water resistance and conductive stability, and the conductive ink is suitable for a heat-sensitive flexible base material.

This invention belongs to the field of flame retardant polymer materials, and specifically relates to a phytic acid-modified piperazine pyrophosphate and zinc borate synergistic flame retardant polypropylene and its preparation method. The composition by mass percentage is: polypropylene (PP): 73-75%; phytic acid-modified piperazine pyrophosphate (PM@PAPP): 24-26%; zinc borate: 0.5-2%. This invention uses piperazine pyrophosphate as the core and, through a liquid-phase supramolecular self-assembly process, in-situ coats the surface with a supramolecular network formed by phytic acid and melamine to prepare a core-shell structured phytic acid-modified piperazine pyrophosphate. This core-shell structure is then compounded with zinc borate, and melt-blended and hot-pressed to obtain a flame-retardant polypropylene composite material. This composite material improves the compatibility between the material and the flame retardant, inhibits the release of toxic fumes, and forms a continuous, dense char layer, enhancing the material's thermal stability and fire safety performance. It solves the problems of traditional flame retardants, such as large dosage requirements, easy migration, insufficient foaming, and poor smoke suppression effects.

The application provides an organic phosphorus synergistic bromine flame-retardant nylon material and a preparation method thereof, and the organic phosphorus synergistic bromine flame-retardant nylon material comprises the following components in mass fractions: nylon resin 60-100 parts, halogenated polystyrene 10-30 parts, modified zinc borate 15-30 parts, flame retardant 5-15 parts, and auxiliary agent 0.1-5 parts; wherein the modified zinc borate is obtained by reacting zinc borate with a silane coupling agent containing a double bond, and then reacting with an allyl phosphate, vinyl POSS, maleic anhydride and a copolymer of styrene. The compatibility and combination effect of various components are optimized, the basic properties such as the strength and toughness of the nylon material are improved, the flame retardation is synergistically achieved from the gas phase and the condensed phase, the flame retardation performance of the composite material is ensured, the problems in the prior art are solved, and the further popularization of the flame-retardant nylon material has important significance.

This invention discloses a high flame-retardant and corrosion-resistant PVC composite coated tarpaulin material for transportation equipment and its preparation method, relating to the field of tarpaulin composite material technology. The tarpaulin, from the outside to the inside, includes an outer surface functional layer E3, an outer polyvinyl chloride functional coating, a fabric base E0 and an impregnation layer E1, and an inner weldable polyvinyl chloride coating. The outer polyvinyl chloride functional coating comprises a polyvinyl chloride resin matrix, an extract-resistant plasticizing system, a microencapsulated ammonium polyphosphate and hydrophobic zinc borate flame-retardant system, a calcium-zinc stabilizing system, and contains sacrificial oxidation buffer components and rare earth oxide nano-components. The outer surface functional layer E3 is a polyaspartic acid ester type polyurea polyurethane coating containing the two components mentioned above, including impregnation and cross-linking of the base fabric, double-sided coating with paste and fusion, and corona treatment of the outer surface followed by sequential coating with E2 and E3 to cure into a film. It is suitable for hypochlorite and peroxide disinfection and cleaning environments and can be assembled and used with high-frequency welding.

The invention relates to the technical field of material modification, and discloses an elastomer modified fly ash composite material and a preparation method thereof. The method comprises the following steps: carrying out surface modification on fly ash through tannic acid and glutaraldehyde, mixing with nitrile rubber, nano-scale magnesium hydroxide, zinc borate, microencapsulated red phosphorus, an antioxidant, a vulcanizing aid and other components according to a specific ratio, and vulcanizing. According to the method, the surface adhesive force between the nitrile rubber and the fly ash can be remarkably improved, the bonding performance between the nitrile rubber and the fly ash is enhanced by forming a stable cross-linked network and an organic coating layer, and the dispersity of the fly ash in the nitrile rubber is effectively improved. Meanwhile, a multi-component synergistic flame-retardant and antioxidant system is constructed, so that the mechanical property, flame retardance and aging resistance of the composite material are remarkably improved. In addition, fly ash is effectively utilized, and both environmental protection and economic benefits are considered.

The invention discloses a phosphate fireproof coating with high volume stability and application thereof. The coating is prepared from the following raw materials in parts by weight: 1-5 parts of aluminum dihydrogen phosphate, 1-4 parts of magnesium oxide, 0.1-0.3 part of wollastonite fiber, 0.1-1 part of aluminum powder paste, 1-3 parts of vermiculite, 0.1-1 part of dolomite, 0.1-0.5 part of organic modified montmorillonite, 0.1-0.5 part of zinc borate and 0.1-0.3 part of expanded graphite. The preparation method comprises the following steps: firstly, premixing the magnesium oxide, the vermiculite, the dolomite, the organic modified montmorillonite, the zinc borate and the expanded graphite to obtain a mixed material; dissolving aluminum dihydrogen phosphate in a proper amount of water, adding wollastonite fibers and the aluminum powder paste, fully stirring to obtain a mixed solution, and carrying out ultrasonic treatment on the mixed solution until the mixed solution is not agglomerated; and finally, adding the mixed material into the mixed solution to obtain the slurry. The coating disclosed by the invention has excellent fire resistance and heat insulation property, high volume stability and excellent crack resistance, and is suitable for the field of fire prevention of steel structures with extremely high requirements on integrity of protective layers.

The application discloses a kind of non-fiber flame-retardant polyamide compositions and preparation method and application thereof, and it is related to the technical field of engineering plastics.A kind of non-fiber flame-retardant polyamide composition includes the following weight parts of components: polyamide resin 55-81 parts;Bromine flame retardant 19-42 parts;Zinc borate 4-12 parts;Antimony white 1-12 parts;Zinc bromide 0.1-0.6 parts;The viscosity of the polyamide resin is 2.4-2.7.The non-fiber flame-retardant polyamide composition of the application can reach 5VA flame-retardant grade, while improving the flame-retardant property without affecting its appearance gloss and mirror effect.

The application relates to the technical field of fire extinguishing materials, and discloses a mine-used fire preventing and extinguishing material and a preparation method thereof. The mine-used fire preventing and extinguishing material is prepared from the following raw materials in parts by weight: 30-40 parts of sulphoaluminate cement, 20-25 parts of acid-activated coal gangue, 5-10 parts of bentonite-based composite phase change body, 3-5 parts of hollow glass microbeads, 0.5-1 part of polypropylene fiber, 3-4 parts of chitosan-acrylic acid copolymer, 1-2 parts of foaming agent, 2-3 parts of expanded graphite, 1-3 parts of zinc borate, 2-4 parts of nano silicon dioxide and 260-320 parts of water. The mine-used fire preventing and extinguishing material provided by the application improves the performance stability in high-temperature fire preventing and extinguishing and the storage stability in the storage process.

This application discloses a lightweight PPO / PA foam material and its preparation method, relating to the field of polymer foam material technology. The method involves constructing a foaming composition using polyphenylene ether, polyamide 6, maleic anhydride-grafted polyphenylene ether, and epoxy-based reactive additives. After mixing and molding, the foam material is obtained through supercritical carbon dioxide saturation foaming and shaping. Further introduction of flame-retardant fillers composed of bisphenol A bis(diphenyl phosphate), melamine cyanurate amide, and zinc borate, as well as SiO2 aerogel or PTFE low-dielectric fillers, can yield flame-retardant, low-dielectric, and flame-retardant low-dielectric foam materials. The beneficial effects of this application are: it can maintain flame-retardant and low-dielectric properties while maintaining low-density mechanical properties, improve foaming stability and cell structure uniformity, enhance the overall structural continuity and comprehensive level of the molded body, and achieve synergy or combination of flame-retardant and low-dielectric functions.

The invention discloses a fireproof coating for a new energy automobile battery pack and a preparation method of the fireproof coating, and belongs to the technical field of fireproof paints.The fireproof coating for the new energy automobile battery pack comprises a component A and a component B. The component A is prepared from, by weight, 50-65 parts of polyvinyl butyral emulsion, 1-5 parts of a curing agent, 1-5 parts of a curing agent and 1-5 parts of a curing agent. The coating is prepared from the following components in parts by weight: 20-40 parts of water-based phosphorus-containing epoxy resin, 10-20 parts of water-based organic silicon resin emulsion, 45-60 parts of a microencapsulated composite flame retardant, 20-30 parts of bagasse fiber, 25-35 parts of expanded graphite, 18-25 parts of zinc borate, 12-18 parts of aluminum hydroxide, 3-5 parts of a dispersing agent, 0.5-1.0 part of a flatting agent, 2-4 parts of a thickening agent, 0.5-1.0 part of a defoaming agent and 2-3 parts of a coalescing agent. And the component B is 5.0-10.5 parts of a curing agent. Through the mode, the microencapsulated composite flame retardant is added, so that the insulating property, the high temperature resistance and the flame retardant property of the coating are improved, and meanwhile, in the preparation of the microencapsulated composite flame retardant, vitamin e and the compounding proportion of three resin raw materials are added, so that a synergistic gain effect is achieved on the electrical strength and the insulating resistance of the coating.

The application discloses a long-acting flame-retardant reinforced PBT material and a preparation method thereof, and relates to the technical field of polymer materials. The material comprises the following components in parts by weight: 45-70 parts of polybutylene terephthalate, 15-35 parts of reinforcing fibers, 8-18 parts of phosphorus-containing flame retardants, 2-8 parts of nitrogen-containing flame retardants, 1-6 parts of inorganic flame-retardant synergists, 2-8 parts of toughening compatilizers, 0.1-0.6 parts of anti-dripping agents, 0.1-0.5 parts of antioxidants and 0.1-0.8 parts of lubricants; and the inorganic flame-retardant synergists are prepared from layered silicates, zinc borate, aluminum hydroxide, silica sol and aluminum dihydrogen phosphate. The material is improved in the problems of inorganic powder agglomeration and insufficient interface bonding through the dispersion coating of the composite inorganic components, the phosphorus-containing and nitrogen-containing flame-retardant systems and the glass fiber reinforcing effect, and is provided with good flame-retardant retention, mechanical properties and processing stability.

The application relates to the technical field of building materials, and discloses a kind of flame-retardant polystyrene composite insulation board and preparation method thereof, flame-retardant polystyrene composite insulation board includes the following components by weight: cement 70~80 parts, polystyrene particles 25~35 parts, dispersible latex powder 2~3 parts, SiO2 aerogel 7~10 parts, silica fume 8~12 parts, water 40~50 parts, water reducing agent 0.5~1 part;Polystyrene particles include the following components by weight: polystyrene 100 parts, flame retardant 10~15 parts, antioxidant 0.2~0.4 parts;Flame retardant includes 3-phenylsulfonyl benzene sulfonic acid potassium, magnesium hydroxide, zinc borate.Through the above technical scheme, the problem of poor flame retardance and strength of the polystyrene composite insulation board in the prior art is solved.

The application discloses a preparation method of a flame retardant in an EVA composite material and belongs to the technical field of flame retardants. The preparation method comprises the following steps: preparing organomontmorillonite, preparing organomagnesium hydroxide, preparing organozinc borate, and mixing. The organomontmorillonite, the organomagnesium hydroxide and the organozinc borate are mixed and stirred at normal temperature to obtain the flame retardant. The prepared flame retardant has the advantages of small dosage, good flame-retardant effect and smoke-suppressing effect, no molten droplet generation during combustion, small influence on the toughness and mechanical strength of the EVA composite material, and small requirement on production equipment.