234 results about "Melamine cyanurate" patented technology

The invention relates to the technical field of PBT materials, and discloses a novel environment-friendly flame-retardant reinforced high glowing filament PBT material. The raw materials comprise the following components in percentage by weight: 23-44.8% of PBT resin, 0-15% of PET resin, 2-10% of a flexibilizer, 8-12% of a brominated flame retardant, 1.5-3% of a synergistic flame retardant, 6-11% of melamine cyanurate, 2-6% of a phosphorus environment-friendly flame retardant, 0.3-3% of a glowing filament synergist, 0.2-1% of an antioxidant, 0.2-1% of a lubricant and 15-35% of glass fibers. According to the novel environment-friendly flame-retardant reinforced high glowing filament PBT material and the preparation method thereof, the PBT material is high in mechanical property and good in fireproof performance, can meet the market requirement that glowing filaments at 750 DEG C and higher grade at 850 DEG C are not ignited in the whole process, meets the latest environment-friendly control requirement on the market, and is wide in market application prospect.

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.

Disclosed are a coating, a coating composition, a secondary battery, and an electronic device, the coating composition including a melamine compound and a binder, the melamine compound including melamine cyanurate, the melamine compound simultaneously satisfying the relational expressions: 1.8 < = K1 / K2 < = 3, 0.18 < = K2 / K3 < = 0.5, and K3 > = K1 > = K2, k1 is the highest peak intensity of the 110 crystal face of the melamine compound, K2 is the peak intensity of the 200 crystal face of the melamine compound, and K3 is the peak intensity of the 202 crystal face of the melamine compound.

The invention discloses a coating type high-molecular flame-retardant material. The composite material is prepared from the following components: organic silicon modified epoxy resin, a bio-based castor oil derivative, hydroxyapatite, carbon nanofibers, expanded graphite, ammonium polyphosphate, zinc borate, nano silicon dioxide, molybdenum oxide, microencapsulated red phosphorus, magnesium hydroxide, melamine cyanurate, aluminum diethylphosphinate, pentaerythritol, trihydroxymethyl phosphine oxide and a silane coupling agent. The coating is prepared from a titanate coupling agent, stearic acid, polyethylene glycol, 2, 6-butylated hydroxytoluene, triphenyl phosphite, 2, 4-dihydroxybenzophenone, sebacic diester, polytetrafluoroethylene micro powder, a modified polydimethylsiloxane flatting agent, organic montmorillonite, a polyether modified silicon defoaming agent and a solvent. The invention has the beneficial effects of high flame retardant efficiency, environmental friendliness, excellent comprehensive performance and excellent processability.

The invention relates to the technical field of fireproof materials, and discloses a flame retardant for fireproof paint and a preparation method of the flame retardant. The flame retardant is prepared from modified aluminum polyphosphate, a borate-phosphate composite acid source, a silica modified carbon forming agent, chitosan modified nano carbon, melamine cyanurate, bicarbonate, graphene oxide, nano titanium dioxide and an interface reinforcing agent. Through the multi-stage catalysis of the composite acid source, the efficient charring of the modified charring agent, the multi-stage gas source release and the synergistic effect of the nano additive, a compact and uniform expansion layer is formed, and the high-temperature stability, the heat insulation performance and the thickness retention rate in a dynamic environment of the expansion layer are remarkably improved. According to the preparation method, by optimizing the steps of mixing, dispersing, drying and curing the components, the high-efficiency exertion of the performance of the flame retardant is ensured. The flame retardant is widely applicable to fireproof coatings for buildings, steel structures, wood and the like, has the characteristics of high expansion efficiency, lasting heat insulation and excellent mechanical properties, and effectively overcomes the defects in the prior art.

The invention discloses a red phosphorus flame-retardant polyamide composite material with high oxygen index and low acid precipitation and a preparation method thereof. The composite material comprises the following raw materials in percentage by weight: 30%-60% of polyamide, 10%-40% of a filling component, 5%-20% of encapsulated red phosphorus flame-retardant master batch, 1%-10% of a flame-retardant synergist, 0.1%-1% of an acid acceptor, 0.1%-1% of a lubricant and 0.1%-1% of an antioxidant. The coating layer of the self-made melamine cyanurate / silicon dioxide coated red phosphorus master batch can also form an efficient phosphorus, silicon and nitrogen synergistic flame-retardant system with red phosphorus, and the oxygen index of the material is greatly improved through the combined action of the coating layer and the synergistic flame retardant. The method has wide application potential in the fields of electronics, aerospace, automobile industry, rail transit, medical treatment and the like.

The invention discloses a preparation method and application of a microencapsulation modified efficient intumescent flame-retardant system.The preparation method specifically comprises the following steps that ammonium polyphosphate and an emulsifier are added into a silicon dioxide capsule material solution, an in-situ polymerization reaction is conducted, and the microencapsulation efficient flame-retardant system with ammonium polyphosphate as a core material and silicon dioxide as a capsule material is obtained; the microencapsulated ammonium polyphosphate is obtained; melamine cyanurate, calcium gluconate and prepared microencapsulated ammonium polyphosphate are compounded to form an intumescent flame retardant system; the application method comprises the following steps: adding the microencapsulated ammonium polyphosphate, the melamine cyanurate and the calcium gluconate according to a certain proportion, dissolving in the epoxy resin a glue, and uniformly stirring and dispersing. And adding epoxy resin b glue according to the mass ratio of a: b of 3: 1 to obtain the flame-retardant EP composite material. Ammonium polyphosphate is subjected to microcapsule wrapping modification, silicon dioxide is adopted as a capsule wall material, ammonium polyphosphate can be effectively wrapped, the compatibility of a base material is improved, and the flame retardant effect of the base material is further improved.

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 discloses a modified ceramic flame-retardant polyphenyl ether insulated wire and cable material which is prepared from the following raw materials in percentage by mass: 15%-20% of polyphenyl ether resin, 10%-20% of SEBS thermoplastic elastomer, 4%-8% of polypropylene resin, 3%-8% of maleic anhydride grafted material, 5%-20% of melamine cyanurate, 5%-15% of aluminum diethylhypophosphite, 1%-4% of 2, 3-dimethyl-2, 3-diphenyl butane, 10%-30% of compound ceramic powder and 1%-4% of antioxidant. The insulated wire and cable material disclosed by the invention has outstanding electrical insulativity, flowability and water resistance, relatively good wear resistance and electrical performance, good dimensional stability and relatively high heat resistance; the flame-retardant property is good, and the self-extinguishing property is realized; and the ceramic forming property after high-temperature combustion is excellent, and the ceramic still has excellent insulating property after being formed.

The invention belongs to the technical field of batteries, and particularly relates to a microcapsule type flame retardant and a preparation method thereof, a composite phase change material and a preparation method and application thereof. According to the microcapsule type flame retardant provided by the invention, the melamine cyanurate is used for wrapping, aluminum hypophosphite can be isolated from a heat source, and decomposition of the aluminum hypophosphite is delayed, so that the problem of poor stability of the aluminum hypophosphite is effectively solved; the melamine cyanurate and the phosphorus-based flame retardant can also achieve a phosphorus-nitrogen synergistic flame retardant effect, so that the flame retardance of the flame retardant is improved. Furthermore, the invention also provides the composite phase change material, and the preparation raw materials comprise a phase change matrix, a supporting framework, a heat conduction reinforcing agent and a flame retardant, the flame retardant is ammonium polyphosphate and a microcapsule type flame retardant; when the composite phase change material is applied to a battery thermal management system, heat generated by a battery can be absorbed in time, the temperature of the battery is kept within a reasonable range, and when the battery is on fire abnormally, the composite phase change material can play a role in flame retardance and reduce the risk of thermal runaway.

The invention discloses high-performance silicone rubber as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. According to the high-performance silicon rubber provided by the invention, the nano boron nitride with a specific size and the gas-phase method white carbon black are used as heat-conducting fillers, and meanwhile, the nano magnesium hydroxide with a specific size, the ammonium polyphosphate and the melamine cyanurate are used as flame retardants together, so that the high-performance silicon rubber is prepared by utilizing the synergistic effect of different fillers and the flame retardants; the insulating property, flame retardance, heat conduction, mechanical property and other properties of the silicone rubber are comprehensively improved, the tensile strength of the obtained silicone rubber is larger than 4 MPa, the elongation at break reaches 180% or above, the minimum heat conductivity coefficient reaches 1.5 W / m.k or above, the volume resistivity reaches 1.0 * 10 < 12 > omega.cm, the flame retardant rating reaches UL-V0, the heat conduction property, the insulating property, the flame retardance and the mechanical property are excellent, and the silicone rubber can be widely applied to the field of silicone rubber. The method is suitable for preparing sealing materials in the fields of electronics, automobile industry, aerospace, buildings and the like.

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 utility model relates to the technical field of melamine cyanurate packaging machines, in particular to a melamine cyanurate packaging machine which comprises a material storage box, a supporting plate, a filter cartridge, a discharging opening, a spiral conveyor, a discharging pipe, a feeding bin, a filtering mechanism and a smashing mechanism. The filter cartridge is fixedly arranged between the supporting plate and the inner top wall of the storage box, the supporting plate is located on the peripheral side of the filter cartridge and is provided with a plurality of discharging openings, the spiral conveyor is fixedly arranged on the storage box and communicates with the storage box, the discharging pipe communicates with the spiral conveyor, the feeding bin communicates with the storage box, and the discharging pipe communicates with the feeding bin. A feeding control valve is fixedly arranged in the feeding bin, the filtering mechanism is arranged in the material storage box and used for driving materials to be screened through the filtering cylinder, and through the technical scheme, the problem that in the related technology, the packaging effect is affected due to the fact that caked materials are likely to be mixed in the packaging process of melamine cyanurate is solved.

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 present invention belongs to the field of polymer materials, and relates to a melamine cyanurate (MCA) coated aluminum diethylphosphinate (ADP) intumescent flame retardant thermoplastic polyurethane and a preparation method thereof. The present invention uses a molecular self-assembly technique to prepare the MCA@ADP flame retardant, and uses MCA@ADP as both the acid source and the gas source, and dipentaerythritol as the carbon source to form an intumescent flame retardant system; the melamine cyanurate coated aluminum diethylphosphinate intumescent flame retardant thermoplastic polyurethane composite material is prepared by melt blending. Adding MCA@ADP and dipentaerythritol is beneficial to the formation of a dense carbon layer after the combustion of the thermoplastic polyurethane composite material, improves the compatibility between the material and the flame retardant, improves the flame retardant performance of the material, and enhances the fire safety performance of the material.

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 relates to a high-flame-retardant zero-dripping low-smoke halogen-free photoelectric composite cable for ships and maritime work platforms. The high-flame-retardant zero-dripping low-smoke halogen-free photoelectric composite cable sequentially comprises an electric unit, at least one optical fiber unit, an inner protective layer, an armor layer and an outer protective layer from inside to outside. The outer surface of the electric unit, the outer surface of the optical fiber unit, the inner protective layer and the outer protective layer are all prepared from a flame-retardant sheath material; the flame-retardant sheath material comprises the following components in percentage by mass: 15-35% of EVA (Ethylene Vinyl Acetate); 1%-10% of EPD M; 1% to 10% of LDPE; 1% to 10% of HDPE; 1%-10% of a compatilizer; 0.1%-0.5% of an antioxidant; 20%-50% of an inorganic flame retardant; 5%-10% of a charring agent; the charring agent is prepared by mixing montmorillonite, red phosphorus and melamine cyanurate according to a ratio of 2: 1: 1. The photoelectric composite cable designed by the invention has the characteristics of high flame retardance, low smoke and zero dripping during combustion, no halogen, UV resistance, hydrolysis resistance and the like.

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 cables, and particularly discloses a flame-retardant modified polyethylene cable insulation layer and a preparation method thereof. The flame-retardant modified polyethylene cable insulating layer comprises the following raw materials in parts by weight: 90-100 parts of polyethylene resin; 30 to 40 parts of EVA resin; 10 to 20 parts of a modified flame retardant; 5-10 parts of aluminum hydroxide micro powder; 5 to 10 parts of barium stearate; 1-5 parts of dimethyl silicone oil; 0.8 to 1.2 parts of a silane coupling agent; 0.5 to 1 part of carbon black; 1-3 parts of an antioxidant; 1-3 parts of a calcium-zinc stabilizer; 1-3 parts of a filler; the modified flame retardant is obtained by modifying melamine cyanurate by aluminum tri-sec-butoxide. According to the cable insulation layer, the modified flame retardant is added, in the combustion process, the modified flame retardant can rapidly form a compact aluminum oxide layer and a carbon layer, the concentration of combustible gas is reduced, the combustion speed is slowed down, and therefore the flame retardant performance of the insulation layer is remarkably improved.

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 provides a hexagonal sheet-shaped melamine cyanurate and a preparation method and application thereof, and relates to the technical field of polymer material flame retardants. The melamine cyanurate in the form of particles with a regular hexagonal sheet structure solves the technical problem that when melamine cyanurate is used as a nano-scale material, the material is easy to agglomerate and difficult to disperse due to high surface free energy, too small size and poor fluidity, and achieves the technical effect of significantly reducing the surface free energy of nano-scale melamine cyanurate and weakening the binding force between its particles.