162 results about "Melamine cyanurate" patented technology

The invention relates to the technical field of insulating materials, in particular to insulating powder and a preparation method thereof. The invention discloses a flame-retardant coating which comprises the following components in parts by weight: 15-25 parts of epoxy resin, 10-20 parts of aluminum hydroxide, 5-12 parts of nano boron nitride, 1-3 parts of a silane coupling agent KH-560, 3-8 parts of polytetrafluoroethylene micro powder, 2-6 parts of fluorine-modified montmorillonite, 4-9 parts of melamine cyanurate, 2-5 parts of nano titanium dioxide, 1-4 parts of a fluorine-modified graphene oxide-polyaniline composite material and 0.5-2 parts of pentaerythritol stearate. The anti-corrosion coating is prepared from the following components in parts by weight: 1 to 3 parts of nano zinc oxide, 5 to 10 parts of glass fiber, 2 to 5 parts of polyhedral oligomeric silsesquioxane-polyimide copolymer, 1 to 4 parts of ferrocenyl epoxy resin and 0.5 to 2 parts of perfluorooctyltriethoxysilane. The insulation powder is high in corrosion resistance, excellent in insulation, heat dissipation and mechanical performance, environmentally friendly in processing, good in adaptability, capable of prolonging the service life of equipment and reducing the cost, suitable for special environments and wide in popularization prospect.

The invention discloses a high-elasticity regenerated polyester material for chemical fibers and a preparation method thereof, and relates to the technical field of high polymer material regeneration. The invention discloses a high-elasticity regenerated polyester material for chemical fibers. The composite material is prepared from the following raw materials in parts by weight: 8 to 12 parts of glass fiber, 0.2 to 0.4 part of silane coupling agent KH-550, 4 to 6 parts of absolute ethyl alcohol, 4 to 6 parts of aluminum hypophosphite, 2 to 4 parts of melamine cyanurate, 0.05 to 0.15 part of aryl sodium phosphate, 65 to 75 parts of modified regenerated polyester, 20 to 30 parts of modified bio-based elastomer, 5 to 10 parts of maleic anhydride grafted polyolefin elastomer, 0.3 to 0.8 part of antioxidant and 1 to 2 parts of carbon black master batch. 0.1 to 0.3 part of a silicone lubricant; and 5 to 10 parts of didodecyl dimethyl ammonium chloride. Through supercritical chain extension, nano grafting and gradient crystallization technologies, the mechanical property and elasticity of the regenerated polyester are improved. The modified bio-based elastomer, the flame retardant and the antistatic agent have a synergistic effect, so that the material has high elasticity, flame retardance and antistatic functions. The method is suitable for high-end application in the field of chemical fibers, realizes high-value recycling of waste polyester, and has remarkable environmental protection benefits.

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 discloses an insulating material with corrosion resistance and a production process thereof, and relates to the technical field of insulating materials. The invention discloses an insulating material with corrosion resistance. The invention discloses a flame-retardant coating which is prepared from the following raw materials in parts by weight: 60 to 80 parts of bisphenol A epoxy resin, 20 to 30 parts of polyether-ether-ketone, 10 to 15 parts of nano aluminum nitride, 5 to 10 parts of boron fiber, 4 to 8 parts of molybdenum disulfide, 3 to 6 parts of poly (p-phenylene benzobisoxazole), 2 to 5 parts of vinyl trimethoxy silane, 20 to 30 parts of dimethyl sulfoxide, 8 to 12 parts of melamine cyanurate, 6 to 10 parts of magnesium aluminum hydroxide, 1 to 3 parts of Chimassorb 944 and 10 to 20 parts of modified polyvinyl alcohol. The coating is prepared from the following components in parts by weight: 20-30 parts of modified cellulose, 8-15 parts of modified cellulose, 3-7 parts of nano-zirconia, 5-10 parts of polysiloxane elastomer and 7-12 parts of fluorine-containing acrylate copolymer. The raw materials of the insulating material have a synergistic effect, and the prepared insulating material not only has conventional electrical insulation, but also has excellent heat resistance, corrosion resistance and the like, integrates hardness, flexibility, flame retardance and self-repairing performance, greatly expands the application range of the insulating material, and provides powerful support for industry development.

The invention discloses a preparation method of a cable with fireproof and flame-retardant functions. A sheath material of the cable is prepared from the following raw materials in parts by weight: 45 to 65 parts of polyphenylene sulfide, 10 to 14 parts of a phosphorus-nitrogen flame retardant, 12 to 18 parts of modified nano magnesium hydroxide, 1.5 to 4 parts of graphene, 3 to 6 parts of carbon nanotubes, 1.5 to 2.5 parts of a silane coupling agent, 0.8 to 1.5 parts of a lubricant, 0.5 to 0.8 part of an antioxidant and 1.2 to 1.8 parts of a cross-linking agent. According to the preparation method of the cable with the fireproof and flame-retardant functions, the flame-retardant efficiency of the cable is remarkably improved by compounding a phosphorus-nitrogen flame retardant, ammonium polyphosphate and melamine cyanurate in a mass ratio of (3.5: 1)-(4.5: 1), modifying with nano magnesium hydroxide and surface stearic acid, and combining with the synergistic effect of graphene oxide and carbon nanotubes, so that the flame-retardant efficiency of the cable is greatly improved, and the flame-retardant performance of the cable is improved. And the phosphorus-nitrogen flame retardant generates an expanded carbon layer during combustion to isolate oxygen and combustible gas, and the nano magnesium hydroxide absorbs heat through decomposition to reduce the combustion temperature and release crystal water to dilute the combustible gas at the same time.

The invention belongs to the technical field of sealants, and particularly relates to a heat-conducting flame-retardant sealant for a power battery and a preparation method thereof.The heat-conducting flame-retardant sealant for the power battery is prepared through collaborative design of a composite heat-conducting filler and a polyglutamic acid-melamine cyanurate-calcium hydrophosphate composite flame retardant and combination of magnetic field dispersion, ultrasonic blending and silane coupling agent interface optimization technologies; the heat-conducting and flame-retardant properties of the material are obviously improved. A lithium silicate glass ceramic precursor is subjected to surface modification through phosphorus oxychloride, the combination of a reinforcing filler and a matrix is enhanced, a flexible cross-linked network is constructed by amino-terminated polyether and an isocyanate curing agent, and the mechanical strength and thermal stability are guaranteed. The sealant inhibits combustion propagation and reduces toxic gas release through a multi-stage reaction mechanism during thermal runaway, meanwhile, the sealant adapts to high-frequency vibration and thermal cycle working conditions of a battery module, and the preparation process realizes synergistic enhancement of heat conduction and flame retardance through gradient stirring, vacuum defoaming and filler uniform dispersion technologies.

The invention belongs to the technical field of polymer composite materials, and particularly relates to an efficient flame-retardant low-toxic-gas-release silicone rubber composite material and a preparation method thereof. The high-efficiency flame-retardant low-toxic-gas-release silicone rubber composite material comprises the following components in parts by weight: 100 parts of methyl vinyl silicone rubber; 10 to 20 parts of ZIF-67 modified by polysiloxane; 5-10 parts of modified nano molybdenum oxide; 5 to 10 parts of melamine cyanurate; 40 to 50 parts of mesoporous SiO2 aerogel; 1-3 parts of hydroxyl silicone oil; 0.5 to 1.5 parts of a vulcanizing agent; and 0-5 parts of an auxiliary agent. The flame-retardant and smoke-suppression performance of the silicone rubber composite material is remarkably improved through material technology innovation, and meanwhile, the mechanical property and the high temperature resistance are improved.

The invention discloses a polyester film for a blue adhesive tape, which is used for binding and packaging a battery of a new energy electric vehicle. The polyester film is prepared from 70-85 parts by weight of high-viscosity polyethylene glycol terephthalate, 5-12 parts by weight of thermoplastic polyurethane, 2-4 parts by weight of siloxane resin powder, 1-3 parts by weight of melamine cyanurate, 2-5 parts by weight of organic modified montmorillonite, 1-3 parts by weight of a coupling agent and 1-3 parts by weight of a coupling agent. 1-3 parts by weight of aromatic polyimide micro powder and 0.3-0.5 part by weight of ethylene glycol monostearate. The invention also discloses a preparation method of the polyester film. The polyester film for the blue adhesive tape is excellent in dielectric strength, flexibility, puncture resistance and flame retardance, the characteristics directly correspond to strict requirements of automobile lithium battery shell packaging, and comprehensive guarantee is provided for safety, reliability and environmental adaptability.

The invention discloses an environment-friendly halogen-free efficient flame-retardant composition, a flame retardant, a preparation method and application, and relates to the field of flame retardants, and the environment-friendly halogen-free efficient flame-retardant composition specifically comprises piperazine pyrophosphate, melamine cyanurate, organic phosphonate and polytetrafluoroethylene. The flame-retardant efficiency is improved. By introducing the silane coupling agent, the compatibility of the flame-retardant composition and polyolefin is improved, the processability of the flame retardant and a polyolefin substrate is improved, the precipitation of the flame retardant is reduced, and the flame-retardant composition can continuously and stably exist in a double-85 environment for more than 1000 hours without precipitation. The halogen-free flame retardant prepared by the method can reduce the use cost, solves the problem that most of the halogen-free flame retardants of the scorched piperidine system in the market are easy to separate out, is high in universality, and has a better flame-retardant effect in flame retardance of various types of polyolefins such as polypropylene and polyethylene.

The invention discloses a thermoplastic whole-core flame-retardant conveying belt and a preparation method thereof. The thermoplastic whole-core flame-retardant conveying belt is composed of a core layer, a flame-retardant covering layer, a wear-resistant layer and a bonding layer. The core layer adopts three layers of aramid fiber / polyester mixed fabric (the radial linear density is greater than or equal to 5000N / cm) and is impregnated with a halogen-free flame-retardant polyurethane sizing material (containing 15phr of APP and 10phr of zinc borate); the flame-retardant covering layer is an intumescent flame-retardant system formed by adding 5 phr of microencapsulated red phosphorus, 20 phr of magnesium hydroxide and 8 phr of melamine cyanurate into an EVA (Ethylene Vinyl Acetate)-based compound; the surface wear-resistant layer is made of ultra-high molecular weight polyethylene (Mw is larger than or equal to 3 * 10 < 6 >, and the thickness ranges from 0.8 The product has the advantages of high strength, light weight, flame retardance and high joint strength retention rate, and is suitable for heavy-load high-temperature scenes such as mines and metallurgy.

The invention relates to a halogen-free flame-retardant rubber conveying belt and a preparation method thereof, and belongs to the field of rubber composite materials. The conveying belt comprises the following raw materials in percentage by mass: 55-65% of a rubber matrix (20-50nm EPDM / SBR blend), 5-10% of microencapsulated red phosphorus (the particle size is less than or equal to 10 microns), 12-15% of modified magnesium hydroxide, 4-6% of a pentaerythritol / melamine cyanurate compounded charring agent, 5-10% of a zinc molybdate / zinc borate compound (the mass ratio is 3: 1) and 3-8% of a maleic anhydride compatibilizer. The halogen-free, environment-friendly and high-flame-retardant performance is achieved, meanwhile, the tensile strength is kept to be larger than or equal to 16 MPa, and the problems that a traditional flame-retardant belt is large in toxicity and poor in mechanical property are solved.

The invention relates to the technical field of composite coating preparation materials for battery diaphragms, in particular to a composite coating for a battery diaphragm as well as a preparation method and application. The invention discloses a graphene quantum dot / carbon nanotube composite material, which is prepared from the following components in percentage by weight: 3 to 8 percent of aminated graphene oxide-polydopamine graft, 10 to 18 percent of polyimide-polyetheretherketone-nano SiO2 hybrid, 2 to 5 percent of hydroxyapatite-montmorillonite core-shell particles, 0.5 to 3 percent of zinc borate-melamine cyanurate compound, 1 to 3 percent of graphene quantum dot-carbon nanotube hybrid, 2 to 6 percent of sodium carboxymethyl cellulose and 50 to 70 percent of deionized water. 0.5 to 2 percent of barium strontium titanate nanocrystalline or 1 to 3 percent of polyethylene glycol-polypropylene glycol segmented copolymer can also be added. All the components are combined through molecular-level reaction to construct a high-performance protection network. The composite coating is good in high temperature resistance and mechanical strength, high in ionic conduction efficiency, excellent in flame retardant effect and good in interfacial compatibility, the preparation process is environmentally friendly and easy to industrialize, the composite coating is suitable for various batteries, and the comprehensive performance of the composite coating is superior to that of a traditional coating.

The invention discloses a halogen-free flame-retardant polyphenyl ether composite material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The composite material is prepared from the following components in parts by weight: 40-70 parts of polyphenyl ether resin, 10-30 parts of high impact polystyrene resin, 4-8 parts of SEBS (Styrene-Ethylene-Butylene-Styrene) resin, 5-10 parts of organic and inorganic composite flame retardant, 3-8 parts of phosphate flame retardant, 1-5 parts of polyborosiloxane and auxiliaries. The core of the organic-inorganic composite flame retardant is that the organic-inorganic composite flame retardant is a core-shell structure particle which takes magnesium-aluminum hydrotalcite and nano silicon dioxide as a core and melamine cyanurate as a shell according to a specific proportion. Through the synergistic effect of all the components, especially the core-shell structure, the dispersity and interfacial compatibility are effectively improved, so that the material achieves excellent flame retardance while maintaining high impact strength and heat resistance, and the UL-94 V-0 grade can still be met even under the condition of a 0.8 mm thin wall. The material is particularly suitable for preparing thin-wall electronic and electrical appliance shells and new energy automobile parts with harsh performance requirements.

The invention discloses a halogen-free flame-retardant nylon composite material and a preparation method thereof. The composite material comprises 61.5-90% of nylon resin, 0.2-1.5% of a phosphorus-nitrogen-silicon flame retardant, 5-20% of a silicate and beta-nucleating agent compound, 5-15% of a dynamically vulcanized elastomer, 0.1-2% of a light stabilizer and 1-3% of a nanoscale inorganic filler. The phosphorus-nitrogen-silicon flame retardant is composed of ammonium polyphosphate, melamine silicate and nano silicon dioxide, and melamine cyanurate is synthesized in situ in the twin-screw extrusion process. The preparation method comprises the steps of precise temperature control extrusion, three-zone in-situ reaction, nanofiller vacuum dehydration and NIRS real-time drying monitoring. The material has high flame retardance, excellent electrical property and mechanical strength, is suitable for electric vehicle battery shells, rail transit high-voltage connectors and aerospace interior trim parts, and meets the requirements of high safety and high reliability.

The invention discloses an adsorbent material for removing perfluorinated and polyfluoroalkyl substances in water and a preparation method thereof, and belongs to the technical field of adsorption separation. The preparation method of the adsorbent material for removing perfluorinated and polyfluorinated alkyl substances in water comprises the following five steps: preparing melamine cyanurate in-situ coated lignin, preparing a precursor, carbonizing, activating with water vapor, and performing hydrothermal secondary activation. The specific surface area of the adsorbent material for removing perfluorinated and polyfluoroalkyl substances in water is 1109-1205m < 2 > / g, the average pore size is 24.2-30.7 nm, and the saturated adsorption capacities of the adsorbent material for PFOS, PFOA and PFBA are respectively 158-183mg / g, 163-177mg / g and 161-170mg / g.

The invention discloses a high-flame-retardant coating diaphragm for a lithium battery and a preparation method of the high-flame-retardant coating diaphragm, and belongs to the technical field of battery diaphragms. The high-flame-retardant coating diaphragm for the lithium battery comprises a base membrane and a flame-retardant slurry layer coated on the surface of the base membrane, the flame-retardant slurry comprises the following raw material components in percentage by mass: 0.2%-0.7% of a dispersing agent, 0.1%-0.5% of a wetting agent, 1%-5% of magnesium hydroxide, 5%-10% of a composite binder, 18%-22% of boehmite, 5%-10% of flame-retardant filler and the balance of ultrapure water; the flame-retardant filler is prepared from modified hollow glass microspheres and nanoscale hexagonal flaky melamine cyanurate; the modified hollow glass microspheres are obtained by modifying hollow glass microspheres with a silane coupling agent; the composite binder is obtained by compounding an acrylate copolymer and polyimide; the acrylic copolymer is obtained by grafting 1, 3-dibromopropane after acrylic acid, butyl acrylate and diethyl allyphosphate react; the polyimide is obtained by mixing and reacting beta-nicotinamide adenine dinucleotide lithium salt and biphenyl tetracarboxylic dianhydride.

The invention discloses a low-smoke halogen-free environment-friendly flame retardant, and relates to the technical field of flame retardants. The invention discloses a low-smoke halogen-free environment-friendly flame retardant. The graphene quantum dot composite material is prepared from the following raw materials in parts by weight: 8 to 12 parts of novel phosphorus-nitrogen heterocyclic compound, 5 to 9 parts of silane-terminated polyether, 2 to 5 parts of graphene quantum dot dispersion liquid, 6 to 10 parts of pentaerythritol diphosphate melamine salt, 5 to 8 parts of melamine cyanurate, 3 to 6 parts of zinc borate, 8 to 12 parts of magnesium hydroxide, 10 to 15 parts of ammonium polyphosphate, 3 to 7 parts of modified polycarbonate and 4 to 8 parts of aluminum diethylphosphinate. The invention relates to a high-temperature-resistant anti-aging coating which is prepared from the following components in parts by weight: 2-4 parts of an organic silicon elastomer, 0.2-0.5 part of triphenyl phosphate, 0.3-0.6 part of polyethylene wax, 0.3-0.8 part of a silane coupling agent KH-550 and 25-35 parts of deionized water. The low-smoke halogen-free environment-friendly flame retardant disclosed by the invention has remarkable advantages, adopts various environment-friendly raw materials, and is green, safe and free of halogen pollution. Through the unique formula design, all the components have a synergistic effect, the flame retardant property is excellent, and the fire risk can be effectively reduced. The added graphene quantum dots and other components also improve the thermal stability and mechanical properties of the product, and the application prospect is wide.

The invention provides a high-wear-resistance halogen-free low-smoke flame-retardant polyolefin cable material and a preparation method and application thereof, and the high-wear-resistance halogen-free low-smoke flame-retardant polyolefin cable material comprises the following raw material components in parts by weight: 80-120 parts of a polyolefin base material; the composite material comprises the following components in parts by weight: 5-10 parts of a hydrogenated styrene-butadiene block copolymer (SEBS), 10-20 parts of a radiation grafting compatilizer, 1.5-3 parts of a self-made wear-resistant agent, 1-3 parts of silicone master batches and 60-80 parts of an inorganic flame retardant comprising magnesium hydroxide or / and aluminum hydroxide. The composite material is prepared from the following components in parts by weight: 3 to 5 parts of hexaphenoxy cyclotriphosphazene, 5 to 10 parts of aluminum diethylhypophosphite, 10 to 20 parts of melamine cyanurate (MCA), 3 to 6 parts of composite antioxidant and 1.0 to 2.5 parts of crosslinking sensitizer powder. 3-5 parts of a processing aid and 4-6 parts of environment-friendly orange master batch. The cable material has the advantages that the cable material is halogen-free, low-smoke and flame-retardant, the shore hardness is 85A, the tensile strength and the elongation at break retention rate after short-term aging are greater than or equal to 80%, the elongation at break after long-term aging is greater than or equal to 50% and the like, and other properties meet the T / CAS356-2019 standard requirements.

This invention discloses an MPP pipe for power cables and its preparation method, relating to the field of polymer materials technology. The invention comprises, by weight, 80-90 parts of a toughening nucleating agent; 40-45 parts of an insulating nucleating agent obtained by in-situ composite and gradient temperature imidization treatment of a polyamic acid prepolymer prepared from hexagonal boron nitride nanosheets (prepared by surface modification with dopamine hydrochloride, followed by modification with octyltriethoxysilane) to obtain a silanized boron nitride suspension; 40-45 parts of melamine cyanurate; 2.1-2.4 parts of an antioxidant; 2.6-3 parts of a light stabilizer; 8-9 parts of a lubricant; and 1340-1500 parts of polypropylene. The introduction of the toughening nucleating agent and insulating nucleating agent in this invention effectively improves the flame retardancy, low-temperature rigidity-toughness balance, and aging resistance of the MPP pipe.

The invention provides a fire-retardant coating and a preparation method thereof, belonging to the technical field of coatings. The coating comprises components such as organosilicon-modified epoxy resin, ammonium polyphosphate, melamine cyanurate, modified carbon nanotubes, cage-type silsesquioxane, zirconium boride-modified MOF-808, modified nano-magnesium hydroxide, rutile titanium dioxide, mica powder, vinyl polydimethylsiloxane-polymethylsiloxane silsesquioxane cross-linked polymer, methylsilanol-silicate cross-linked polymer, dimethylthiotoluenediamine curing agent, etc. The modified carbon nanotubes are carbon nanotubes modified by polyoxyethylene fatty acid esters, and the modified nano-magnesium hydroxide is nano-magnesium hydroxide modified by stearic acid. The components are used in combination to have good fire resistance, long fire resistance time, good weather resistance, and long-term performance is not likely to be greatly reduced.

The invention discloses a flame retardant, a high-strength oriented structural plate and a preparation method and application thereof, and belongs to the technical field of flame-retardant materials. The flame retardant is prepared from the following components in parts by weight: 1 to 5 parts of ammonium polyphosphate, 1 to 5 parts of boron flame retardant, 1 to 5 parts of melamine cyanurate and 0.5 to 1.5 parts of nano aluminum oxide. When the ammonium polyphosphate, the boron-based flame retardant, the melamine cyanurate and the nano aluminum oxide are compounded to serve as the shaving board flame retardant, the synergistic interaction effect is achieved in the aspects of improving flame retardance and mechanical properties. The oriented structural board prepared from the flame retardant has excellent physical and mechanical properties, the elastic modulus reaches 9802 MPa, the static bending intensity reaches 89.45 MPa, the internal bonding strength reaches 0.78 MPa, the 24-hour water absorption thickness swelling rate is smaller than or equal to 11.0% and far exceeds the requirement of a 2-type OSB board recorded in GB / T41715-2022, the smoke release amount is small, and the combustion level reaches B1 (C).

The application belongs to the field of polymer composites, and particularly relates to a synergistic flame-retardant composite material for fireproof doors and a preparation method thereof; aiming at the problem that excessive addition of a flame retardant can cause the mechanical property of a composite material to decrease; the application improves the dispersibility of nano-zinc oxide in a PVC matrix through citric acid / phytic acid composite modification, and forms a high-efficiency synergistic flame-retardant system by compounding with aluminum diethyl phosphinate and melamine cyanurate; by constructing a gradient functional structure of a high-flame-retardant region and a low-flame-retardant region, and cooperating with a co-extrusion process, the damage of the flame retardant to the mechanical property of the matrix is reduced while the overall excellent flame-retardant property of the material is ensured.

The invention discloses a flame retardant for shaving boards as well as a preparation method and application of the flame retardant, and belongs to the technical field of flame-retardant materials. The flame retardant for the shaving board is prepared from the following components in parts by weight: 1 to 5 parts of boron flame retardant, 1 to 5 parts of melamine cyanurate and 0.5 to 1.5 parts of nano aluminum oxide. The boron-based flame retardant, the melamine cyanurate and the nano aluminum oxide are synergistically matched, and synergic complementation of a flame-retardant mechanism is realized by controlling the use amounts of the three components of the boron-based flame retardant, the melamine cyanurate and the nano aluminum oxide. The MCA is used for diluting combustible gas by decomposing and releasing non-combustible gas, and the boron flame retardant and the nano aluminum oxide form a glassy or compact oxide layer on the surface of the material, so that heat and oxygen transfer is blocked. And the boron compound inhibits smog generation, the nanometer aluminum oxide enhances the strength of the carbon layer, molten drops are reduced, and the safety is improved. The synergistic effect of the three can reduce the consumption of the flame retardants, reduce the cost, reduce the negative influence on the mechanical properties of the shaving board, and even counteract the weakening of the flame retardants on the mechanical properties of the shaving board.

The invention relates to the technical field of high-voltage cables, in particular to a crosslinked polyethylene insulated high-voltage direct-current cable, which is characterized in that an insulating layer contains a crosslinked polyethylene base material, a composite modifier, an antioxidant compound system, a nano nucleating agent, a tracking-resistant agent, a compatilizer and a smoke suppressant, the composite modifier is prepared by compounding an ethylene-vinyl acetate copolymer and a methyl methacrylate-butadiene-styrene copolymer, the antioxidant is prepared by compounding hindered phenol and phosphite ester, the nano nucleating agent is prepared from silane coupling agent KH-550 modified talcum powder and calcium carbonate, the tracking-resistant agent is prepared from melamine cyanurate and stearic acid activated magnesium hydroxide, and the lubricant is prepared from a lubricant and a lubricant. The compatilizer is maleic anhydride grafted polyethylene, and the smoke suppressant is compounded by ammonium molybdate and tin oxide. The components synergistically improve the flexibility, aging resistance and dielectric property of the insulating layer, the tracking resistance and smoke suppression are balanced, and the preparation process solves the problem of additive agglomeration, accurately controls the crosslinking degree, reduces the internal stress and improves the performance uniformity.

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 an antistatic flexible connection and a preparation method, and the antistatic flexible connection comprises a flange and a connecting piece connected with the flange, and the connecting piece is composed of a middle buffer layer and antistatic functional layers arranged on both sides of the middle buffer layer; the antistatic functional layer is composed of the following components in parts by weight: 5-10 parts of a conductive polymer, 2-5 parts of an interface modifier, 1-3 parts of a self-made antioxidant, 35-45 parts of inorganic filler modified polyurethane elastomer, 10-18 parts of functional fillers, 3-6 parts of fluorosilicone, 5-9 parts of melamine cyanurate, 8-12 parts of nano kaolin and 2-5 parts of polyethylene glycol diacrylate. Through reasonable collocation and synergistic effect of the components, the antistatic flexible connection has excellent performance in antistatic property, mechanical property, flame retardancy, aging resistance and the like, and meets the use requirements under complex working conditions.

The invention provides a high-strength collision-resistant cable and a preparation method thereof. The high-strength collision-resistant cable comprises an oxygen-free copper conductor, a modified insulating layer, a multifunctional buffer layer, a high-strength armor layer and a wear-resistant outer sheath which are sequentially arranged from inside to outside, the invention relates to a preparation method of an anti-aging agent. The high-strength collision-resistant cable is prepared from the following raw materials: 35 to 45 parts of modified crosslinked polyethylene, 12 to 18 parts of polyisobutene grafted maleic anhydride-nano boron nitride compound, 8 to 15 parts of modified high-performance polypropylene-graphene quantum dot compound, 3 to 6 parts of nano titanium dioxide, 7 to 12 parts of aramid staple fiber, 5 to 10 parts of melamine cyanurate and 0.8 to 1.5 parts of calcium stearate. 0.5 to 1.0 part of a silane coupling agent, 6 to 10 parts of polycaprolactone and 0.3 to 0.8 part of an antioxidant. The obtained cable has excellent comprehensive performance of high strength, impact resistance, insulation, flame retardance and weather resistance.

The present application belongs to the field of sealant technology, and specifically relates to a heat-conducting flame-retardant sealant for power batteries and its preparation method. By collaboratively designing a composite heat-conducting filler with a polyglutamic acid-melamine cyanurate-calcium hydrogen phosphate composite flame retardant, combined with magnetic field dispersion, ultrasonic blending and silane coupling agent interface optimization technology, the thermal conductivity and flame retardancy of the material are significantly improved. The lithium silicate glass ceramic precursor is surface-modified by phosphorus oxychloride to enhance the bonding between the filler and the matrix. The amino-terminated polyether and the isocyanate curing agent construct a flexible cross-linked network to ensure mechanical strength and thermal stability. The sealant suppresses the propagation of combustion through a multi-stage reaction mechanism in the event of thermal runaway, reduces the release of toxic gases, and adapts to the high-frequency vibration and thermal cycling conditions of the battery module. The preparation process achieves a synergistic enhancement of thermal conductivity and flame retardancy through gradient stirring, vacuum degassing and uniform dispersion of fillers.

The invention discloses a flame-retardant toughening agent for a polypropylene material and a preparation method of the flame-retardant toughening agent, and relates to the technical field of flame-retardant toughening agents. The flame-retardant toughening agent for the polypropylene material is prepared from the following raw materials: a polypropylene carrier, ethylene-octylene elastomer grafted maleic anhydride, a modified polypropylene compatilizer, modified ammonium polyphosphate, pentaerythritol, melamine cyanurate, a zinc oxide-zinc borate compound synergist, polytetrafluoroethylene micro powder, nano silicon dioxide and a hindered phenol antioxidant. The composition comprises a phosphate antioxidant, oxidized polyethylene wax, calcium stearate, a nucleating agent and an ammonium molybdate smoke suppressant. According to the invention, a polypropylene carrier is taken as a matrix, ethylene-octylene elastomer grafted maleic anhydride and a modified polypropylene compatilizer are introduced synergistically to construct a plurality of raw materials such as a polar gradient interface, so that synergic improvement of flame retardance and toughening performance is realized on the premise of not significantly sacrificing flow and strength; it is expected that a stable vertical combustion rating and higher carbon layer integrity and impact resistance retention rate can be obtained.

The invention belongs to the technical field of halogen-free flame-retardant cable materials, and relates to a halogen-free flame-retardant polyethylene cable material capable of forming carbon and crusting after combustion and a preparation method of the halogen-free flame-retardant polyethylene cable material. The cable material comprises matrix polyethylene resin, a char forming accelerant, a smoke suppressant, a lubricant, a flame retardant, an antioxidant and color master batch. Wherein matrix polyethylene is aminopropyl siloxane grafted long-chain branched polyethylene, the high temperature resistance of siloxane, the processing performance of polyethylene and the mechanical enhancement characteristic of a long-chain branched structure are combined, and the charring accelerant is a system formed by combining a nitrogen-phosphorus modified cellulose charring accelerant and a modified melamine cyanurate flame retardant. Compared with a traditional charring accelerator and a flame-retardant system, the flame-retardant flame-retardant system has better flame-retardant and insulating properties and the like, and has the advantages of environmental protection, sustainability, low addition amount, efficient flame retardance, synergistic smoke suppression and toxicity reduction and the like. The cable material has good flame-retardant, insulating and mechanical properties, and is widely applied to the fields of electric power, communication, construction, transportation and the like.