528results about How to "Improve flame retardant performance" patented technology

The invention relates to the technical field of composite materials, in particular to a silicone rubber composition and a preparation method thereof. The silicone rubber composition is prepared from the following raw materials in parts by weight: 100 parts of methyl vinyl silicone rubber, 25-35 parts of white carbon black, 2.8-3.0 parts of hydroxyl silicone oil, 1.1-1.2 parts of hydrogen-containing silicone oil, 0.8-1 part of a cross-linking agent, 20-30 parts of an additive A, 6-8 parts of an additive B and 1.5 parts of a silane coupling agent KH-550. The additive in the additive A is carbonized and forms an intumescent flame-retardant system in the reaction under the combined action of mannitol and bamboo fiber, and generates a flame-retardant gas during decomposition, so that the fire resistance and flame retardance of the silicone rubber composition can be effectively improved, and meanwhile, the additive B is capable of effectively improving the flame retardance of the silicone rubber composition based on the loading of blumea oil and chitosan quaternary ammonium salt. The blumea oil endows the material with an anti-aging function through the good anti-oxidation characteristic, so that the thermal stability and durability of the silicone rubber composition are effectively improved under the combined action of the additives.

The utility model relates to the technical field of BMS signal acquisition wire harnesses, in particular to a new energy automobile BMS signal acquisition flame-retardant wire harness structure which comprises a BMS signal acquisition wire harness and a wire harness flame-retardant structure body, a flame-retardant corrugated pipe is arranged on the wire harness flame-retardant structure body, and hard end pipes are integrally arranged at the two ends of the flame-retardant corrugated pipe respectively. A first cable positioning seat and a second cable positioning seat which are clamped with each other are further arranged on the wire harness flame-retardant structure main body, and the first cable positioning seat is formed by rotationally connecting two symmetrical structures. The new energy automobile BMS signal acquisition flame-retardant wire harness structure can reliably fix the part, between the connectors, of the wire harness, the flame-retardant corrugated pipe is adopted for external overall protection, meanwhile, the center protection hose with the heat conduction function is arranged on the inner side of the flame-retardant corrugated pipe, cooling protection treatment can be assisted for the wire harness, and the service life of the wire harness is prolonged. Mutual interference among the wire harnesses is effectively avoided, and the flame-retardant effect is improved.

A heat-resistant insulated PVC material for communication cables comprises the following components and parts by weight: polyvinyl chloride 45-55; stabilizer 5-10; plasticizer 15-25; nitrile oxide 3-8; aluminum hydroxide 10-15; magnesium hydroxide 20-30; smoke suppressant 1-5; skin coupling agent 1-3; IPPP 10-20. The product obtained by this invention is lightweight, has good physical and mechanical properties, excellent mechanical balance, superior flame retardancy, good thermal stability, and no dripping.

This invention relates to the field of thermal insulation materials, specifically to an inorganic silicon crystal fire-resistant thermal insulation material for fireproof air ducts and its preparation method. The material comprises inorganic silicon crystal powder, hollow microspheres, composite binders, reinforcing fibers, surface modifiers, nano-antibacterial agents, crack-resistant agents, flame-retardant synergists, and intumescent flame-retardant microcapsules. The inorganic silicon crystal powder is activated by calcination, the microspheres are pretreated with coupling agents and coated with silica sol, the binder is a compound type, the fibers are grafted, the antibacterial agent is loaded onto a carrier, and the flame-retardant microcapsules have a specific core and shell. All components work synergistically to ensure performance. This invention improves the material's fire resistance, thermal insulation, and mechanical properties, integrates antibacterial and flame-retardant functions, optimizes the process to ensure stable performance, reduces fire risk, and meets the high-performance and high-stability requirements of high-end building fireproof air ducts.

The invention discloses a flame-retardant nylon material which comprises 50-70 parts of PA (polyamide), 1-5 parts of a toughening agent, 3-5 parts of a P-series flame retardant, 3-5 parts of an N-series flame retardant and 10-20 parts of a modified polysilsesquioxane flame retardant, and the modified polysilsesquioxane flame retardant is prepared from raw materials including silsesquioxane A, a compound B and a catalyst in an alkaline environment. The silsesquioxane A comprises at least one epoxy group D, and the compound B contains a phosphorus element P and a nitrogen element N and at least comprises a halogen end group X. The flame-retardant nylon material provided by the invention is excellent in flame retardant property and dielectric property, has good processability and mechanical property, greatly improves the anti-cracking property and anti-dripping effect of the flame-retardant nylon material, and is safe and environment-friendly.

The utility model provides a stainless steel olefin alloy ground wire lightning protection structure. The stainless steel olefin alloy ground wire lightning protection structure includes: alloy ground wire, two fixed rings, two fixed rings are installed in the both ends of alloy ground wire respectively, two fixed rings are opposite one end all fixedly connected with olefin alloy head, two olefin alloy heads another end all are equipped with the connecting assembly, two fixed rings adjacent one end all are fixedly connected with the butt joint ring, first insulating layer, first insulating layer is located in the inner surface of alloy ground wire, the alloy ground wire is from inside to outside in proper order for first stainless steel layer, multiple olefin alloy wire, filling layer, second stainless steel layer, flame -retardant layer, buffer layer and second insulating layer. The utility model provides a stainless steel olefin alloy ground wire lightning protection structure, through this design has increased the lightning protection performance of stainless steel olefin alloy ground wire, has reduced the probability that the stainless steel olefin alloy ground wire is hit by lightning and is damaged.

This invention relates to the field of polymer materials, specifically to an automotive interior material and its preparation method, comprising PVC resin and a composite heat stabilizer; the composite heat stabilizer comprises a calcium-zinc heat stabilizer, a polyol phosphate ester, and amino POSS, wherein the mass ratio of the PVC resin to the composite heat stabilizer is 20-40:1, and the mass ratio of the calcium-zinc heat stabilizer, the polyol phosphate ester, and the amino POSS is 1-5:1-5:1-5. The automotive interior material prepared by this invention has good thermal stability and mechanical properties, and excellent heat aging resistance.

The application discloses a preparation method of a ternary hybrid micro-nano particle / encapsulated flame-retardant heat-conducting epoxy composite material with a branch-leaf structure, and belongs to the technical field of micro-nano particle modified hybrid and preparation of flame-retardant heat-conducting composite materials. The application provides a preparation method of an encapsulated epoxy composite material with a branch-leaf structure hybrid nano particle, in which boron nitride nano sheets with excellent heat-conducting and flame-retardant properties are selected as leaf structures, the surfaces of the boron nitride nano sheets are modified by aluminum oxide microspheres with excellent heat-conducting properties, and silicon carbide nano wires with excellent heat-conducting properties are selected as branch structures, so that the branch-leaf structure hybrid nano particle is constructed, and the encapsulated epoxy resin composite material with excellent heat-conducting and flame-retardant properties is prepared.

The present application belongs to the technical field of high-performance nylon fiber materials, and particularly relates to a preparation method of antibacterial modified high-performance nylon fiber. The preparation method comprises the following steps: S1, a triazine ring-containing dicarboxylic acid is prepared by taking cyanuric chloride, 4-amino-2,2,6,6-tetramethylpiperidine and p-hydroxybenzoic acid as raw materials, triphenylphosphine oxide is subjected to nitration treatment and reduction treatment to obtain tris(3-aminophenyl)phosphine oxide, and the triazine ring-containing dicarboxylic acid and the tris(3-aminophenyl)phosphine oxide are mixed for a synthesis reaction to obtain modified hyperbranched polyamide; S2, polyamide masterbatch, modified hyperbranched polyamide, antibacterial material, zinc stearate and antioxidant are melt blended, extruded and granulated to obtain modified nylon chip; and S3, the modified nylon chip is subjected to melt spinning to obtain antibacterial modified high-performance nylon fiber. The present application not only ensures that the fiber has good antibacterial performance, but also effectively improves the breaking strength and flame retardant performance.

The invention provides flame-retardant tread rubber as well as a preparation method and application thereof. The flame-retardant tread rubber is prepared from the following raw materials in parts by weight: 100 parts of matrix rubber, 24-35 parts of a composite flame retardant, 40-100 parts of filler, 1-4 parts of a silane coupling agent, 2-6 parts of an anti-aging agent, 1-3 parts of sulfur, 1-3 parts of an accelerant, 1-3 parts of stearic acid and 3-5 parts of zinc oxide, the composite flame retardant comprises a halogen flame retardant and an inorganic flame retardant, the inorganic flame retardant comprises an inorganic coating flame retardant, and the inorganic coating flame retardant comprises an antimony trioxide core and a molybdenum disulfide coating layer coating the surface of the antimony trioxide core. In the flame-retardant tread rubber disclosed by the invention, a molybdenum disulfide coating layer in the inorganic coating flame retardant can improve the stability of antimony trioxide at a high temperature, and can enhance the interfacial compatibility with a non-polar rubber matrix at the same time, and the synergistic reaction with the halogen flame retardant further improves the flame-retardant effect; therefore, the flame retardancy of the rubber is improved, and excellent mechanical properties are kept at the same time.

The invention discloses a sulfur-free FR-4 copper-clad plate and a preparation method thereof, and belongs to the technical field of copper-clad plates. The copper-clad plate is prepared from sulfur-free epoxy resin, a sulfur-free curing agent, a sulfur-free flame retardant, organic silicon hybrid macromolecules, tetrafunctional epoxy resin, linear phenolic resin, microencapsulated ammonium polyphosphate, melamine cyanurate, surface grafting modified boehmite nanorods and filler. Through the design of a sulfur-free system, the sulfur content of the product is lower than 50 ppm, and the problems of contact resistance increase, unstable signal transmission and the like caused by sulfide migration of a traditional FR-4 copper-clad plate in a high-temperature and high-humidity environment are thoroughly solved. Meanwhile, the organic silicon hybrid macromolecules and the high-functionality epoxy resin have a synergistic effect, so that the balance of high glass transition temperature and high toughness is realized. The copper-clad plate has excellent dielectric property, flame retardant property and long-term reliability, and meets the development requirements of high reliability and high performance of electronic products.

The application provides a polyester composite material and a preparation method and application thereof, the polyester composite material comprises polybutylene terephthalate, polycarbonate, a bromine-containing flame retardant, a synergistic flame retardant and a toughening agent in specific proportions, and the bromine-containing flame retardant comprises a combination of at least two of brominated epoxy resin, brominated polycarbonate or brominated polystyrene; by selecting polybutylene terephthalate and polycarbonate for collocation, and adding at least two specific bromine-containing flame retardants and synergistic flame retardants for flame-retardant modification, the obtained polyester composite material not only has excellent flame-retardant performance, but also has a low amount of die drool when being extruded in an extruder die, thereby effectively avoiding the problem that the die drool is carbonized at high temperature and then flows into the product to contaminate the product, and effectively improving the product quality of the finally obtained polyester composite material.

The application relates to the technical field of functional materials, in particular to a vinyl-modified magnesium-based flame retardant as well as a preparation method and application thereof, which comprises the following steps: adding water-magnesite into an ethanol solution to stir into a slurry, adding a modification aid, heating to 50-80 DEG C, constant-temperature stirring for 10-20 min, then filtering, drying, and obtaining the vinyl-modified magnesium-based flame retardant; the mass ratio of the water-magnesite to the modification aid is 1:(0.001-0.005). The vinyl-modified magnesium-based flame retardant does not contain halogen, has high-efficiency flame retardation, has good compatibility with high-molecular materials, and can improve the mechanical properties of high-molecular polymer materials when used.

The utility model relates to the technical field of pressing for processing of high-flame-retardant corrugated paper, and discloses pressing equipment for processing of high-flame-retardant corrugated paper, which comprises a frame body assembly, a conveying assembly, a coating assembly, a pressing assembly and a heating assembly, the conveying assembly is mounted on the inner wall of the frame body assembly, the coating assembly is mounted above the heating assembly, and the pressing assembly is mounted on the inner wall of the frame body assembly. The pressing assembly is installed on the outer wall of the frame body assembly, and the heating assembly is installed above the frame body assembly. The heating assembly is arranged, the heating temperature and time can be accurately controlled, energy waste is avoided, due to high efficiency of the production process and relative shortening of the running time of equipment, energy consumption is further reduced, heat can be provided for the interior of the device, and therefore corrugated paper can be better cured; the coating assembly is arranged, so that the flame-retardant material can cover all parts of the paper more uniformly, and the situation that the local flame-retardant effect is poor is avoided.

The invention discloses a medical silica gel sealing ring material and a preparation method thereof, and relates to the field of silica gel materials. When the medical silica gel sealing ring material is prepared, mica powder, phytic acid, diglycidyl ether and allyl glycidyl ether are uniformly mixed and react to obtain modified mica powder; the preparation method comprises the following steps: reacting 4-(2-aminoethyl) phenylboronic acid with 3, 3 '-dihydroxy-[1, 1'-biphenyl]-4, 4 '-diformaldehyde to obtain a graft; the preparation method comprises the following steps: reacting vinyl silicone oil, thioglycerol and methacryloylethyl sulfobetaine to obtain modified silica gel; uniformly mixing the modified silica gel, the modified mica powder and the graft, and reacting to obtain the medical silica gel sealing ring material. The medical silica gel sealing ring material prepared by the invention has excellent flame-retardant, anti-aging, antifouling and mechanical properties.

The application provides a recyclable phase change microcapsule and a preparation method thereof, and comprises the following steps: (1) preparing a surfactant solution; (2) adding a phase change material into the surfactant solution and uniformly dispersing to obtain an emulsified solution; (3) adding a solution containing magnetic metal ions into the emulsified solution and uniformly stirring to obtain a mixed solution; (4) adding a solution containing carbonate or hydroxyl into the mixed solution, so that the carbonate or hydroxyl reacts with the magnetic metal ions to form a coating wall material of the capsule; (5) performing cooling treatment on the solution in the stirring state in (4) until the microcapsule is coagulated into a small spherical shape, and then the recyclable phase change microcapsule is obtained after separation, washing and drying. The application can realize the repeated use of the microcapsule, and the capsule wall of the microcapsule is all inorganic material with magnetism, which has high flame retardance, mechanical strength and thermal conductivity, so that the microcapsule can be better used in the field of building energy-saving materials.

The application provides a preparation method of a sulfide-based composite solid electrolyte film, comprising the following steps: adding 65-95 parts of a sulfide electrolyte, 1-10 parts of a lithium salt, 3-20 parts of a liquid polyether, 0.5-5 parts of a liquid organic modifier and 0.5-5 parts of a flame retardant into a high-speed blender according to mass fractions, and mixing by high-speed stirring, wherein one of the liquid polyether and the liquid organic modifier contains an amino group, and the other contains an epoxy group; rolling the mixed sample to obtain a thin film sample with a thickness of 20-50 microns; and placing the thin film sample in a vacuum oven for heat treatment to obtain the sulfide-based composite solid electrolyte film. The application also provides a sulfide-based composite solid electrolyte film and application thereof. The sulfide-based composite solid electrolyte film prepared by the preparation method has good film forming performance, and the film thickness can reach 20-50 microns.

The invention relates to the technical field of composite materials, in particular to a synergistic flame-retardant epoxy resin-based porous sound insulation composite material and application thereof. The raw materials comprise 100 parts of bisphenol A epoxy resin, 15 parts of an aliphatic amine curing agent, 12 parts of ammonium dihydrogen phosphate, 6 parts of melamine, 4 parts of nano silicon dioxide, 5 parts of sodium chloride, 2 parts of ammonium bicarbonate, 0.8 part of carbon nanotubes and 0.5 part of a silane coupling agent. The synergistic flame-retardant epoxy resin-based porous sound-insulation composite material provided by the invention effectively solves the technical bottleneck that the flame-retardant, sound-insulation and mechanical properties of an epoxy resin-based material in the prior art are difficult to synergistically improve, and has remarkable beneficial effects in multiple aspects.

The utility model relates to the technical field of cable manufacturing, and discloses a double-layer co-extrusion sheath cable which comprises a conductor, a conductor shielding layer, a crosslinked polyethylene insulating layer, an insulation shielding layer, a semi-conductive water-blocking tape, a soft round copper wire, a soft pure copper tape, a non-conductive water-blocking tape and a CPP tape from inside to outside. According to the double-layer co-extrusion sheath cable, the inner sheath layer and the outer sheath layer are arranged, the inner sheath layer is made of the flame-retardant PVC material with the oxygen index larger than or equal to 32%, a carbonization layer can be rapidly formed under the condition of high temperature or open fire, oxygen is effectively isolated, flame-retardant gas is released, and flame is prevented from spreading towards the interior of the cable, and the outer sheath layer is made of the high-hardness MDPE material. Although the flame retardance is general, the flame diffusion speed can be slowed down, and through the synergistic effect with the inner layer PVC, the overall flame retardant grade of the cable reaches the V-0 grade (UL 94 standard), the high-flame-retardant scene requirement is met, and the flame retardant property is further remarkably improved.

The application discloses a high-temperature-resistant silica gel composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. In view of the problems that existing silica gel is easy to be thermally degraded and brittle and has poor flame-retardant performance above 300 DEG C, the application uses methyl vinyl silicone rubber as a matrix, introduces specific structure organic flame retardant and epoxy modified nano cerium dioxide. The two are in-situ chemically bonded through epoxy groups and phenolic hydroxyl groups to construct a synergistic protection network, which significantly improves the dispersibility of the filler and prevents high-temperature migration. The material has excellent mechanical property retention rate at 350 DEG C extreme high temperature, and the flame-retardant grade reaches UL-94 V-0 level. By forming a dense Ce-P-O-C ceramicized carbon layer, oxygen and heat are effectively isolated, the technical problems that the silica gel is easy to crack and easy to burn in an extreme heat environment are solved, and the material is suitable for the fields of aerospace and electronic packaging.

This invention relates to the field of polymer materials technology, specifically disclosing a flame-retardant thermoplastic elastomer compound and its preparation method. The flame-retardant thermoplastic elastomer compound comprises 50-80 parts SEBS, 10-30 parts PP, 5-15 parts compatibilizer, 10-30 parts composite flame retardant, 3-10 parts plasticizer, 0.2-1 parts antioxidant, and 0.1-0.5 parts lubricant. The composite flame retardant is prepared by reacting and mixing an intumescent flame retardant, barium metaphosphate, boron nitride, triallyl isocyanurate, and SEBS. The flame-retardant thermoplastic elastomer compound of this application possesses good flame retardancy, mechanical properties, and water resistance stability.

The present application relates to a kind of preparation methods of smoke-suppression type emulsion explosive composite wax resin, including using the C5 olefin rich component of 50~75 ℃ of cracking C5 rectification interception as raw material, first by the cationic polymerization of anhydrous aluminium chloride catalysis to obtain refined resin liquid D, then copolymerization with p-divinylbenzene and allyl phosphoric acid diester.The emulsion explosive composite wax prepared by the present application has good environmental protection and comprehensive physicochemical properties, and has important significance for the preparation and application of environmental protection type emulsion explosive.

The invention relates to the technical field of building energy conservation, heat preservation and heat insulation materials, and discloses a flame-retardant phase-change heat preservation and heat insulation building material and a preparation method thereof.The preparation method of the flame-retardant phase-change heat preservation and heat insulation building material comprises the following steps that paraffin is loaded in ZnO / CuO hollow microspheres to obtain phase-change microspheres; modifying the phase change microspheres with polydopamine and acryloyl chloride to obtain functionalized phase change microspheres; the preparation method comprises the following steps: carrying out graft polymerization on a phosphorus-containing eugenol compound and 1-amino-5-hexene-2-alcohol on the functionalized phase change microspheres to obtain multifunctional phase change microspheres; polyether polyol, functionalized polyol, myricetin, multifunctional phase-change microspheres and the like are used as raw materials, foaming is performed, and the flame-retardant phase-change heat-preservation and heat-insulation building material is obtained. The flame-retardant phase-change heat-preservation and heat-insulation building material is excellent in heat-preservation and heat-insulation performance, flame-retardant performance and mechanical performance, has anti-ultraviolet performance and antibacterial and mildew-proof performance, can reduce erosion damage caused by external conditions, and prolongs the service life.

This invention discloses a polyolefin-containing DCPD epoxy resin and a copper-clad laminate composition thereof, and its preparation method. The method is characterized by: polymerizing polyallyl phenol and catalyst A at high temperature to form polyallyl phenol; then reacting DCPD, polyallyl phenol, and catalyst B at high temperature to form a polyolefin-containing DCPD phenol resin; subsequently, epoxidizing the resin with epichlorohydrin and alkaline catalyst C to synthesize a polyolefin-containing DCPD epoxy resin; finally, mixing the resin with maleimide resin, phosphorus-containing phenolic resin, imidazole accelerator, inorganic filler, and solvent to obtain the polyolefin-containing DCPD epoxy resin composition for copper-clad laminates. The polyolefin-containing DCPD epoxy resin and copper-clad laminate composition prepared by this invention exhibits low dielectric constant, low dielectric loss, and high heat resistance, making it particularly suitable as a raw material for copper-clad laminates and highly practical.

The present invention provides a flame retardant composition for foamed styrene resin, which can be used to produce a foamed molded body having excellent flame retardancy and heat resistance, a flame-retardant foamed styrene resin composition, and an extrusion-foamed molded body thereof. The flame retardant composition for foamed styrene resin of the present invention contains at least component (B1) tetrabromobisphenol A-bis(2,3-dibromo-2-methylpropyl ether), component (C) zinc fatty acid, and component (D) fatty acid metal salt (except for the (C) component), the content of the (C) component is 0.1 to 15 parts by mass per 100 parts by mass of the (B1) component, and the content of the (D) component is 1 to 35 parts by mass per 100 parts by mass of the (B1) component.

The present application relates to the technical field of rubber tube, and particularly relates to a flame-retardant oil-resistant inner-fluorine outer-silicon rubber tube material and a preparation method thereof. The flame-retardant oil-resistant inner-fluorine outer-silicon rubber tube material comprises, from inside to outside, an inner-fluorine rubber layer, a calendered cloth layer and a silicon rubber layer. The inner-fluorine rubber layer is prepared from the following raw materials in parts by weight: FKM mixed rubber 50-70 parts, FVMQ mixed rubber 40 parts; wherein the FKM mixed rubber is prepared from the following raw materials in parts by weight: FKM 60-80 parts, carbon black 15-25 parts, barium sulfate 8-14 parts, modified magnesium hydroxide whisker 5-10 parts, plasticizer 6-12 parts, vulcanization aid 2-6 parts; and the FVMQ mixed rubber is prepared from the following raw materials in parts by weight: FVMQ 20-28 parts, polytetrafluoroethylene micro powder 6-12 parts, lignin sulfonate 4-8 parts, lubricant 0.5-2.5 parts. The rubber tube material prepared by the present application has not only good mechanical properties, but also high flame retardancy and good oil resistance.

The application relates to the technical field of packaging materials, in particular to a high-strength flame-retardant packaging material and a preparation method thereof. According to weight parts, the packaging material comprises the following raw materials: 70-90 parts of polylactic acid, 6-12 parts of polybutylene adipate terephthalate, 4-15 parts of a flame retardant, 3-7 parts of modified montmorillonite, 3-5 parts of maleic anhydride grafted polypropylene, 0.3-0.5 parts of an antioxidant and 0.5-1 part of a lubricant. The packaging material has excellent flame-retardant performance, bacteriostatic performance, barrier performance and mechanical performance.

The application discloses a wear-resistant EVA material and a preparation method thereof, and relates to the technical field of polymer materials. In the preparation of the wear-resistant EVA material, modified nano cellulose is prepared by reacting nano cellulose and a triazole type ultraviolet absorber; modified silicon dioxide is prepared by sequentially reacting silicon dioxide with 4-anilinoethyl triethoxysilane and 4-vinyl aniline; modified ethylene-vinyl acetate copolymer is prepared by sequentially reacting ethylene-vinyl acetate copolymer with allyl phosphine dichloride and eugenol; the modified ethylene-vinyl acetate copolymer, the modified nano cellulose, the modified silicon dioxide, hydrogen-containing silicone oil and chloroplatinic acid are melt-mixed to prepare the wear-resistant EVA material by compression molding. The wear-resistant EVA material prepared by the application has excellent wear resistance, flame retardation and anti-aging performance.

The invention belongs to the technical field of aeronautical materials, and particularly relates to a PEI modified material containing a high-temperature composite dispersion system as well as a preparation method and application of the PEI modified material. The PEI modified material containing the high-temperature composite dispersion system provided by the invention is prepared from the following raw materials: polyetherimide resin, titanium dioxide, carbon black and dispersing agents (a coupling agent and polyamide wax). The PEI modified material containing the high-temperature composite dispersion system provided by the invention can realize efficient and uniform dispersion and color regulation and control of pigments in a high-viscosity and strong-polarity system, and has excellent heat resistance, mechanical property and flame retardant property, and interior structural parts prepared from the PEI modified material meet the comprehensive requirements on light weight, attractiveness and durability in the aviation field.

The invention discloses a high-flame-retardant EVA (Ethylene Vinyl Acetate) foaming material and a preparation method thereof, and relates to the technical field of high polymer materials. The high-flame-retardant EVA foaming material is prepared from a coated functional filler, a nitrogen-doped graphene-like carbon / cobalt nano composite material, EVA, stearic acid, zinc stearate, zinc oxide, a foaming agent AC and dicumyl peroxide, a core-shell combined filler composed of a coated functional filler and a nitrogen-doped graphene-like carbon / cobalt nano composite material is uniformly distributed in an EVA three-dimensional network cross-linked matrix to form a porous material with a uniform closed cell structure, so that the flame retardant property is improved by virtue of a physical barrier effect and a catalytic carbon formation mechanism, and an efficient and stable conductive network is also constructed; the antistatic performance is optimized, and the application range of the EVA foaming material is widened.