30results about How to "Achieving Flame Retardancy" patented technology

The invention relates to a flame-retardant rubber and plastic thermal insulation material and a preparation method thereof, and belongs to the technical field of high polymer materials. The flame-retardant rubber-plastic thermal insulation material comprises the following components in parts by weight: 50-75 parts of nitrile rubber, 20-45 parts of PVC resin, 10-15 parts of a plasticizer, 1-10 parts of a foaming agent, 1-5 parts of a foaming promoter, 10-40 parts of a composite flame retardant and 2-6 parts of a modified anti-aging agent, cyclohexanehexol phosphate in the composite flame retardant is heated and dehydrated into phosphoric acid, a barrier layer is formed to inhibit release of combustible materials, and dimethylallylamine combusts to absorb heat and cooperates with phosphorus-oxygen double bonds for flame retardance; a pre-product in the modified anti-aging agent reacts with a free radical of a rubber molecular chain, so that the heat resistance and the aging resistance of the material are improved, a maleimide group enhances an intermolecular acting force, the rigidity and the heat resistance of the molecular chain are improved, and material aging caused by high temperature is reduced; the flame-retardant rubber and plastic thermal insulation material prepared by the invention not only has an excellent anti-aging effect, but also has good flame retardance.

The invention relates to the technical field of hydrophobic flame-retardant materials, and discloses a method for preparing a super-hydrophobic flame-retardant flexible material from a water-dispersed nanocellulose compound, which comprises the following steps: preparing a nanocellulose suspension; synthesizing silicon dioxide nanoparticles; preparation of a precursor suspension: mixing SiO2 nanoparticles, methyltrimethoxysilane and the nanocellulose suspension in proportion, and carrying out a reaction to obtain the precursor suspension; preparing a polyvinyl alcohol solution; preparing a water-dispersible plant nano cellulose compound mixed solution, and freezing the water-dispersible plant nano cellulose compound mixed solution; and carrying out freeze drying treatment and heat treatment on the frozen material to obtain the super-hydrophobic flame-retardant flexible material. According to the method for preparing the super-hydrophobic flame-retardant flexible material by adopting the water dispersible nano-cellulose compound, the material preparation process is green and pollution-free, and the prepared flexible material has the characteristics of high elasticity, high oil absorbency, reusability, fire resistance, degradability and the like, and can be applied to various fields.

The present invention relates to a halogen-free flame-retardant TPU composite material and a preparation method thereof, and belongs to the technical field of polymer materials. The halogen-free flame-retardant TPU composite material comprises, by weight, 3-10 parts of a modified flame retardant, 2-10 parts of phenoxy cyclophosphazene, 80-100 parts of TPU particles, 90 parts of N,N-dimethylformamide, 0.8-1.2 parts of an ultraviolet absorber, and 2.5-3.5 parts of a lubricant; in the modified flame retardant, ammonium polyphosphate is heated to polyphosphoric acid, which is heat-insulating and flame-retardant, improves the comprehensive performance of the material, and the quaternary ammonium salt structure and the carbamate bond synergistically enhance the flame retardant and heat-resistant performance of the material; in the ultraviolet absorber, cyanuric chloride and benzotriazole intermediates absorb ultraviolet rays, reduce the damage of ultraviolet rays to the material, and enhance aging resistance and toughness; the halogen-free flame-retardant TPU composite material prepared by the present invention not only has good flame retardant and heat-resistant effects, but also has excellent anti-ultraviolet performance.

The invention relates to the technical field of artificial board processing, in particular to a preparation method of green low-toxicity flame-retardant plywood. The method comprises the following steps: S1, green synthesis and step-by-step dipping treatment of a complexing phosphorus-nitrogen flame retardant; s2, preparation of a flame-retardant adhesive and construction of an interface intumescent flame-retardant system; s3, stepped layered assembly and hot press molding; s4, conducting ion regulation and anti-rust treatment; wherein the complexing phosphorus-nitrogen flame retardant in the step S1 takes phosphorus and nitrogen as core flame-retardant elements and is synthesized through a complexing rapid reaction and cross-linking reaction technology, the reaction temperature is 80-100 DEG C, and the reaction time is 30-60 minutes; the mass ratio of the phosphorus-containing metal complex precursor to the nitrogen source compound to the chitosan to the catalytic substance is (2-3): (5-6): (1-3): (0.5-1). According to the flame-retardant plywood prepared through the method, the combustion rate growth index is smaller than 100 W / s, the 600-s total heat release amount is smaller than 7.0 MJ, the smoke generation rate index of the smoke generation characteristic is smaller than or equal to 30 m / s, the 600-s total smoke generation amount is smaller than or equal to 50 m, and multiple technical defects of traditional flame-retardant plywood are overcome.

The utility model discloses a polypropylene insulating fireproof flame-retardant environment-friendly medium-voltage power cable, which comprises an insulating wire core and an insulating layer, and is characterized in that the insulating layer is wound on the outer side of the insulating wire core; the insulating layer comprises a semi-conductive nylon tape wrapping layer, a metal shielding layer, a glass fiber tape wrapping layer, a heat insulation layer, a fireproof tape wrapping layer, an oxygen isolation layer, a first flame-retardant tape wrapping layer, a fireproof layer, an armor layer, a second flame-retardant tape wrapping layer and an outer sheath layer from inside to outside in sequence. According to the utility model, through the double-structure design of the double fireproof layers, the heat insulation layer and the oxygen isolation layer, the fireproof performance and the flame-retardant B1-level combustion performance of the aluminum alloy core medium-voltage cable are realized, the bunched A-type combustion performance is satisfied, and the high-performance development trend of the cable is met; and the conductor material and the metal shielding material are made of aluminum alloy materials, so that the influence of overhigh price of the copper rod on the cost of the cable is reduced, and the comprehensive competitiveness of the cable market is enhanced.

The invention discloses a polypropylene composite material with weather resistance and flame retardancy and a preparation method thereof, and belongs to the field of thermoplastic high molecular polymer materials. The invention comprises the following steps: a benzyl-containing hindered phenol antioxidant, bromine and a free radical initiator react to obtain a brominated hindered phenol antioxidant; the brominated hindered phenol antioxidant reacts with an amino-terminated organosiloxane to obtain a hindered phenol-organosiloxane; hindered phenol-organosiloxane, a carbon-carbon double bond-terminated organosiloxane and an organic weak acid react to obtain a carbon-carbon double bond-terminated hindered phenol-organosiloxane; hindered phenol-organosiloxane and propylene are polymerized under the action of a composite catalyst to obtain a polypropylene composite material. The invention directly introduces a functional group with flame retardancy and antioxidant properties into the main chain of polypropylene by covalent crosslinking during the preparation process of polypropylene, and then polymerizes to obtain a polypropylene composite material with weather resistance and flame retardancy.

The invention belongs to the technical field of high-performance fiber materials, and relates to a sheath-core structure flame-retardant nylon 6 fiber and a preparation method thereof. The base material of the sheath-core structure flame-retardant nylon 6 fiber is nylon 6, and the sheath-core structure flame-retardant nylon 6 fiber contains a charring agent with a lamellar structure and a high-temperature self-crosslinking agent; the charring agent is only positioned on the skin layer and is orderly and directionally arranged along the axial direction of the flame-retardant nylon 6 fiber with the skin-core structure; the high-temperature self-crosslinking agent is only positioned in the core layer; the crosslinking reaction temperature of the high-temperature self-crosslinking agent is higher than the melting point of the nylon 6 and lower than the combustion temperature of the nylon 6; the specification of the flame-retardant nylon 6 fiber with the skin-core structure is 50-150D / 36-96F, and the ratio of the thickness of the skin layer to the diameter of the core layer is 1: (6-8). The preparation method adopts a composite spinning process. According to the flame-retardant nylon 6 fiber with the skin-core structure, through the unique skin-core structure design, the flame retardant property is improved, and meanwhile the mechanical property of the nylon 6 fiber is maintained.

The utility model discloses a flame-retardant insulating pressure-sensitive adhesive tape for external protection of a power battery. The flame-retardant insulating pressure-sensitive adhesive tape comprises a first base material layer, a first primer layer, a first bonding layer, a second primer layer, a second base material layer, a second bonding layer and a release layer which are sequentially laminated, wherein the first bonding layer is a silica gel pressure-sensitive adhesive layer. The utility model provides the power battery external protection flame-retardant insulating pressure-sensitive adhesive tape with a multi-layer structure, so that the impact resistance and the flame-retardant property are realized, the insulating property of a pressure-sensitive adhesive tape product is also improved, and the 180-degree stripping force can reach 1800gf / inch; according to the utility model, the anti-impact performance of the product is improved through the silica gel pressure-sensitive adhesive layer; through the innovative structural design, the flame-retardant insulating pressure-sensitive adhesive tape for external protection of the power battery, which is better in impact-resistant flame-retardant effect and good in adhesive property, is prepared, is better applied to the field of external protection of the power battery and the field with higher requirements, and can be expanded to be applied to an energy storage battery cell.

The utility model relates to the technical field of medical instruments, and discloses an operating lamp insulating shaft sleeve which comprises a shaft sleeve body, a base layer is arranged on the inner material of the shaft sleeve body from inside to outside, a first insulating layer is arranged outside the base layer, and a second insulating layer is arranged outside the first insulating layer. A reinforcing layer is arranged outside the second insulating layer, a protection assembly is arranged outside the reinforcing layer, the protection assembly comprises a blocking layer, the blocking layer is arranged outside the reinforcing layer, a high-temperature-resistant layer is arranged outside the blocking layer, and a breathable layer is arranged outside the high-temperature-resistant layer. According to the utility model, the shaft sleeve is prevented from being deformed and cracked to influence the use and safety of the device, the heat insulation and heat resistance effects are realized, the heat dissipation and flame retardance are carried out on the interior of the shaft sleeve, the combustion caused by overhigh internal temperature is avoided, the durability of the shaft sleeve is improved, and the condition that the shaft sleeve is easy to wear or damage is reduced.

The present invention relates to the technical field of coatings, and discloses a method for preparing a water-based acrylic anticorrosive coating. The present invention uses PEPA and phosphorus pentoxide as raw materials to obtain bis-PEPA-based phosphate. Using 3-hydroxyglutaric acid, aminopropyltriethoxysilane, hexamethylene diisocyanate, graphene oxide, etc. as raw materials, bis-silane-modified graphene oxide is prepared. Add bis-silane-modified graphene oxide, bis-PEPA-based phosphate, etc. to the water-based acrylic emulsion, stir and mix evenly, grind and filter, and obtain a water-based acrylic anticorrosive coating. The present invention utilizes phosphorus hydroxyl, silicon hydroxyl, and graphene in the coating, and the three cooperate to assist in improving the adhesion and corrosion resistance of the coating, and utilize flame retardant elements to improve the flame retardant properties of the coating. The water-based acrylic anticorrosive coating prepared by the present invention has excellent anticorrosion performance, flame retardant properties, and adhesion.

The invention relates to the technical field of diatom ooze decorative plates, in particular to a fireproof and antibacterial diatom ooze decorative plate and a preparation method thereof.The fireproof and antibacterial diatom ooze decorative plate comprises a base material layer, a decorative layer and a fireproof and antibacterial coating which are sequentially arranged from bottom to top; the fireproof and antibacterial coating comprises the following raw materials in parts by weight: 3-6 parts of nano silicon dioxide, 6-10 parts of methacryloyloxyethyl hexadecyl dimethyl ammonium chloride, 20-30 parts of 2-hydroxyethyl methacrylate phosphate, 5-10 parts of [(6-oxo-6H-dibenzo [C, E] [1, 2, 3] triazolo [3, 4-b] pyrimidine-2-yl)-1, 2, 3-triazolo [ The invention relates to a UV (ultraviolet) photoinitiator, which is prepared from the following components in parts by weight: 10 to 20 parts of 2, 2] oxophosphahexane-6-yl) methyl] succinic acid bis (2-hydroxyethyl) ester, 80 to 100 parts of polyurethane acrylate resin, 3 to 5 parts of photoinitiator and 20 to 40 parts of organic solvent. According to the fireproof and antibacterial diatom ooze decorative plate and the preparation method thereof, on the premise of ensuring the mechanical strength, the fireproof and antibacterial diatom ooze decorative plate not only has an excellent decorative effect, but also has fireproof performance and antibacterial performance at the same time.

The invention discloses an anti-aging polyethylene plastic and a preparation method thereof, and relates to the technical field of plastic preparation. The anti-aging agent is prepared through coordination binding of 5-amino-2-mercaptobenzimidazole and selenium dioxide, selenium atoms are introduced, chain reaction is prevented, plastic aging is slowed down, and meanwhile sulfur inhibits pyrolytic reaction and slows down flame propagation speed; then, the mixture participates in dehydration condensation reaction in modified polyethylene to jointly form a cross-linked structure, so that the mechanical strength and the thermal stability of the plastic are remarkably improved. Wherein the modified polyethylene is subjected to double-bond polymerization reaction with 1, 3-butadiene and 1, 5-hexadienol, so that the connection stability is improved, and the strength of the plastic is improved; the strength and toughness of the plastic are remarkably improved, the heat resistance is improved, the plastic can adapt to various environments, abrasion is reduced, the silicon element is heated to form a glassy film or carbon black to cover the surface of the plastic during combustion, heat and oxygen are isolated from entering, and the flame-retardant effect is achieved.

The invention provides a lithium ion battery electrolyte flame-retardant additive, application and a lithium ion battery, Zn-MOF-74 is used as a carrier, triphenyl phosphate (TPP) is used as a flame-retardant active component, and the TPP is packaged in a porous framework of Zn-MOF-74 to form core-shell structure nanoparticles; the loading capacity of TPP in the additive is 10-40 wt%, and the particle size of particles is 300-700 nm; the flame-retardant additive accounting for 0.5-40% of the mass of the electrolyte is added into the basic electrolyte, ultrasonic dispersion is carried out for 25-45 min, and a flame-retardant electrolyte is formed; the basic electrolyte is a mixed system of 0.5-3 mol / L of lithium salt and a carbonic ester organic solvent; the carbonic ester organic solvent is a mixed solution of EC, DEC and EMC in a volume ratio of 1: 1: 1; the lithium salt is LiPF6; the flame-retardant electrolyte also contains 0.5-2wt% of a negative electrode film-forming additive, and the negative electrode film-forming additive is VC or FEC; the electrolyte is the flame-retardant electrolyte; the pole core is formed by winding or laminating a positive plate, a negative plate and a diaphragm; according to the lithium ion battery electrolyte flame-retardant additive, the application and the lithium ion battery, the effect of improving the safety performance of the battery can be achieved.

This invention discloses a functionalized MXene-based waterborne fire-retardant coating, its preparation method, and its application, belonging to the field of fire-retardant coating technology. This invention combines the advantages of functionalized MXene materials, such as high dispersibility, high temperature resistance, and excellent flame-retardant properties, using waterborne polyurethane as the resin matrix, ammonium citrate as the acid source, and MXene materials as nanostructured flame retardants to develop an environmentally friendly, high-performance reinforced waterborne fire-retardant coating. The MXene materials can be obtained through chemical modification with different functional groups (such as silane coupling agents, calixarenes, and MOFs) to introduce polar groups onto the surface. The fire-retardant coating prepared using functionalized MXene materials achieves UL-94 V-0 flame retardancy through a dual mechanism of physical barrier and "catalytic char formation," while also possessing high mechanical strength and thermal stability, making it suitable for protecting substrates such as metals and wood.

The invention discloses a cyclophosphazene solid electrolyte additive, a modified solid electrolyte as well as a preparation method and application of the modified solid electrolyte. The modified solid electrolyte comprises a lithium salt, a polymer matrix and an additive, the additive is a polysubstituted cyclophosphazene compound, the solid electrolyte has excellent self-extinguishing performance (less than or equal to 2s), a substituted functional group on cyclophosphazene can coordinate with Li < + >, a Li < + > coordination structure can be regulated, and the self-extinguishing performance of the solid electrolyte is improved. An electrochemically stable electrode electrolyte membrane can be formed on the surface of the high-voltage positive electrode, the ion transmission performance and the interface mass transfer kinetics are improved, the electrode interface stability is remarkably improved, and long-acting stability of the high-voltage positive electrode is achieved. The all-solid-state lithium battery using the solid-state electrolyte shows excellent cycling stability (200 circles, 0.5 C, capacity retention rate of 86.1%, 30 DEG C; and the capacity retention ratio is 70.3%, 20 DEG C, 50 circles, 0.1 C).

This invention relates to the field of flame-retardant composite materials, specifically to flame-retardant composite materials based on the synergistic reinforcement of talc and graphene sheets and their applications. It addresses the problem that existing polymer materials struggle to simultaneously achieve reinforcement, flame retardancy, and lightweighting, and require large quantities of high-performance additives. The process involves first mixing talc sheets, graphene, a composite flame retardant, and a dispersant in a high-speed mixer, then cooling to room temperature to obtain a premix. A polymer matrix is ​​then added to a twin-screw extruder. The premix and other auxiliary additives are added through a side feed port, melt-blended, water-cooled, air-dried, and pelletized to obtain composite material particles. These particles are then vacuum-dried and injection-molded to obtain the flame-retardant composite material. The flame-retardant composite material possesses excellent flame-retardant and mechanical properties, exhibiting outstanding overall performance and being more suitable for industrial production.

The present invention relates to the technical field of profiles, and in particular provides a multi-layer aluminum alloy composite plate material, comprising a multi-layer aluminum alloy composite plate material, comprising a profile made of aluminum alloy, a thermal effect plate arranged in the profile, a fire extinguishing medium filled in the profile and a foaming agent filled in the profile; the top of the profile is once formed with a first cavity, a second cavity and a third cavity, the first cavity is formed on the left side of the top surface of the profile, the third cavity is formed on the right side of the top surface of the profile, and the second cavity is filled with a clamp. When the heat exceeds the melting point or plastic point of the plastic plate on the left, the plastic plate will also deform and open the second pore on the left, and the foaming agent will also flow into the second cavity from the second pore, and then spray upward from the guide hole on the left to the other side of the glass, and the fire extinguishing medium is sprayed on the opposite side of the glass, so that both sides of the glass can achieve flame retardancy or fire extinguishing.

This invention discloses a polylactic acid (PLA) filled with seaweed fiber and its preparation method. The PLA filled with seaweed fiber is prepared by weight-based methods using 100 parts PLA, 20-100 parts seaweed fiber, 1-5 parts zinc borate, 0.5-5 parts γ-aminopropylsilanetriol, 0.5-3 parts antioxidant, and 0.1-3 parts lubricant. This invention introduces zinc borate and γ-aminopropylsilanetriol into the PLA filled with seaweed fiber, thereby significantly improving the mechanical and flame-retardant properties of PLA, providing prospects for the application of PLA materials in more fields.

The present application relates to the technical field of paint, and especially relates to a weather-resistant one-coat paint and a preparation method thereof. The paint comprises component A and component B; the mass ratio of the component A to the component B is (25-30):3; according to weight parts, the component A comprises the following raw materials: 20-30 parts of hydroxyl acrylic acid resin, 10-20 parts of organic solvent, 25-35 parts of pigment, 5-15 parts of flame retardant, 1-5 parts of modified graphene and 1-4 parts of additive; and the component B is a solution of aliphatic polyisocyanate. The paint has excellent bacteriostasis, flame retardation, weather resistance and corrosion resistance.

The utility model discloses a silicone rubber high-temperature-resistant control cable which comprises a conductor protection layer, a protection sleeve is arranged on the outer side of the conductor protection layer, an aluminum foil shielding layer is arranged on the outer surface of the protection sleeve, an inner silicone rubber sleeve is arranged on the outer side of the aluminum foil shielding layer, and an outer silicone rubber sleeve is arranged on the outer side of the inner silicone rubber sleeve. Compared with the prior art, the cable has the advantages that when the cable is on fire, a tough carbon layer can be formed on the outer surface by utilizing the expanded graphite layer, so that the flame-retardant effect is realized, the combustion time is shortened, toxic gas generated by combustion is reduced, the elastic rubber net can be recovered after the cable is extruded, the deformation of the cable is reduced, and the working strength of the cable is improved.

The invention relates to the technical field of textile fabrics, and discloses a flame-retardant elastic textile fabric and a processing method thereof.The processing method includes the steps that chinlon, acrylic fibers, conductive fibers, soybean protein glue, poly (p-dioctyl phthalate), phosphorus-containing modified benzoxazine and graphene oxide modified boric acid are stirred and mixed; extruding, granulating and drawing through a screw extruder to obtain warps; the spandex and the wool fibers are mixed according to the weight part ratio, the wool fibers are arranged on the outer side of the spandex through a conjugate spinning assembly, and then drawing is conducted to obtain wefts; and weaving the warp yarns and the weft yarns on a weaving machine to obtain the flame-retardant elastic textile fabric. NO2, CO2 and H2O generated during thermal decomposition of benzoxazine in phosphorus-containing modified benzoxazine can inhibit flame spreading, so that the flame-retardant effect is achieved, boron and phosphorus in the phosphorus-containing modified benzoxazine have good flame-retardant effects, a flame-retardant system is formed by the boron, the phosphorus, a graphene oxide structure in graphene oxide modified boric acid and phosphorus, and the good flame-retardant effect is achieved.

The invention relates to the field of coatings, in particular to a fireproof and waterproof composite coating and a preparation method thereof, which are used for solving the problems that an existing epoxy resin coating is poor in flame retardance and water resistance, and application of the epoxy resin coating in high-humidity, high-temperature or fire risk areas is limited. The composite coating takes epoxy resin as a main raw material, has excellent adhesiveness, can form firm chemical bonds with a base material, ensures that the coating is uniformly coated on various surfaces and is not easy to fall off, and can further improve the overall adhesion performance of the coating and ensure the long-term durability of the coating by adding a multi-epoxy organosilicon compound into the coating. The water resistance and flame retardance of the coating can be remarkably improved by adding the fluorine-containing organic phosphorus compound, and the finally prepared coating has excellent fireproof and water-resistant performance, so that the coating shows more excellent performance in various environments, the service life of the coating is remarkably prolonged, and the application range of the coating is remarkably widened.

The invention discloses flame-retardant antifouling seamless embroidery wall cloth and a manufacturing method thereof. The flame-retardant antifouling seamless embroidery wall cloth comprises the following structural layers from inside to outside: a base material layer; a sound insulation and noise reduction layer; a flame retardant layer; an antibacterial and mildew-proof layer; an antifouling layer; a negative ion release layer; embroidering the pattern layer; the embroidery pattern layer is covered with the surface treatment layer, the surface treatment layer is a transparent or semitransparent environment-friendly polyurethane coating, the thickness of the surface treatment layer ranges from 0.015 mm to 0.025 mm, and the ultraviolet curing technology is adopted so that the overall glossiness and abrasion resistance of the wall cloth can be enhanced, and meanwhile the clarity and color vividness of embroidery patterns can be kept; according to the flame-retardant antifouling seamless embroidery wall cloth, through specific structural composition and component design, the multiple effects of flame retardance, antifouling, attractiveness and durability are achieved, and meanwhile according to the manufacturing method, the quality stability and production efficiency of the wall cloth are ensured by accurately controlling the steps of coating, embroidering and surface treatment of all the layers.

The invention discloses an intumescent flame retardant and a preparation method and application thereof.The intumescent flame retardant is a compound formed by combining a triazine compound and aminophosphonic acid through ionic bonds, the aminophosphonic acid compound contains phosphorus and nitrogen at the same time, the triazine compound is of a tertiary nitrogen-rich structure, and the tertiary nitrogen-rich structure is a nitrogen-rich structure. Therefore, the three-source integrated intumescent flame retardant can be prepared by combining the characteristics of the two, and the triazine compound can enable the phosphorus and nitrogen of the flame retardant to be balanced. The triazinyl compound is combined by ionic bonds, the obtained ionic flame retardant can be uniformly dispersed in a polymer, and after the ionic flame retardant is dissolved or dispersed in a high polymer material, the efficient flame retardant effect is achieved by utilizing the flame retardant property of the triazinyl compound amino phosphonate. The flame-retardant polypropylene disclosed by the invention takes the triazinyl compound as a flame retardant, so that the flame-retardant polypropylene not only has a small addition amount of the flame retardant, but also has good flame retardance.

The invention discloses a polycarbonate material containing functionalized graphene and a preparation method of the polycarbonate material. The polycarbonate material comprises the following components in percentage by weight: 55-75% of polycarbonate, 5-10% of functionalized graphene, 3-7% of multi-walled carbon nanotubes, 3-8% of a flame retardant, 10-20% of an elastomer, 2-5% of a compatilizer, 0.5-2% of an antioxidant, 0.5-2% of an anti-dripping agent and 0.5-2.0% of a release agent. According to the preparation method, the polycarbonate material is obtained by mixing the raw materials through a pretreatment and step-by-step mixing method and a twin-screw extrusion method. The polycarbonate material containing functionalized graphene has the problems of insufficient thermal conductivity and poor flame retardance, and can meet the comprehensive requirements of the polycarbonate material in the aspects of mechanical properties, light weight and the like.

The utility model provides a kind of intumescent fire-retardant fireproof coiled material, especially relate to fireproof coiled material technical field, including metal foil wrapping layer, the inner side of metal foil wrapping layer is integrally formed with metal foil separating sheet, metal foil separating sheet is equidistantly distributed in the inner side bottom of metal foil wrapping layer, the utility model places fire-retardant package 4 between the inner side of metal foil wrapping layer 1 adjacent two metal foil separating sheets 3, and fire-retardant package 4 is aluminium hydroxide, magnesium hydroxide, red phosphorus and glass fiber storage bag composition, aluminium hydroxide, magnesium hydroxide, red phosphorus are stored by glass fiber storage bag, aluminium hydroxide decomposes and generates water vapor and alumina protective layer under high temperature environment, magnesium hydroxide and aluminium hydroxide compound can widen fire resistance temperature range, and red phosphorus generates phosphoric acid by heating, catalytic carbon and release phosphorus-containing free radical inhibit combustion;Phosphate and carbon source synergistically form intumescent carbon layer, improve heat insulation, reach the effect of intumescent fire-retardant.

The application discloses a bidirectional stretching flame-retardant reinforced nylon film for lithium ion battery packaging and a preparation method thereof. First, two multifunctional inorganic modified compounds, mesoporous silica coated carbon nanotube hybrid and phosphorus-nitrogen synergistic flame-retardant reinforced titanium dioxide nanorod, are designed and synthesized. Then, the two inorganic modified compounds are added as core additives, and mixed with a nylon matrix, an antioxidant, a lubricant, a dispersant and an electrolyte-resistant modifier to obtain a composite master batch through melt extrusion granulation. Finally, the composite master batch is subjected to melt extrusion, casting, bidirectional stretching, shaping and winding to obtain the bidirectional stretching flame-retardant reinforced nylon film for lithium ion battery packaging. The nylon film prepared by the application has excellent flame-retardant performance, mechanical strength, electrolyte corrosion resistance, aging resistance and processing performance, and the preparation process is simple, green and environment-friendly, and can meet the application requirements of high-end lithium ion battery packaging fields such as lithium ion battery soft packaging and hard shell packaging.

The invention discloses concrete with high compression resistance and corrosion resistance and a preparation method thereof, and relates to the technical field of concrete. Firstly, undecylenic aldehyde is grafted on the surface of polyvinyl alcohol, so that the mechanical strength and the corrosion resistance of the concrete are improved; according to the present invention, the mechanical strength and the thermal stability are significantly improved, the corrosion resistance of the concrete is improved, the sulfonate is decomposed to absorb heat during combustion, the decomposition combustion speed is slowed down, the carbonized layer is formed, the silicon element is assisted, the thermal stability is improved, and the corrosion resistance of the concrete is improved; the ignition point is improved and the flame-retardant effect is enhanced. The modified polymer emulsion is prepared by enabling allyl trimethyl ammonium chloride and allyl alcohol glycidyl ether to participate in styrene acrylate polymerization reaction, cations are introduced, the corrosion speed is slowed down, glycidyl ether is assisted, and the mechanical strength and durability of the concrete are improved. And the two are mixed and filled with concrete, so that the effects of high pressure resistance, corrosion resistance and flame retardance are achieved.

This utility model relates to a decorative leather for car armrests, belonging to the field of car armrest decoration technology. It includes composite leather with a fixing structure on the outside for positioning and easy disassembly / removal of car armrests made of different materials. The fixing structure includes a fixing plate adhered to the bottom of the composite leather. Hinges are fixedly connected to the front and rear ends of the fixing plate. A movable strip is hinged to the inner side of the hinge frame, and a magnetic block is embedded on the outer surface of the movable strip. Double-sided adhesive is provided on the bottom of the composite leather and the top of the fixing plate for bonding and positioning. The composite leather includes a surface layer, a flame-retardant layer, a reinforcing layer, and a cushioning bottom layer. A rigid cup sleeve is sewn onto the top of the composite leather. This decorative leather for car armrests, through its fixing structure, achieves the effect of positioning and easy disassembly / removal of car armrests made of different materials. Compared with existing leathers, it is easier to clean and replace, and its applicability is better.

The invention relates to the technical field of high polymer materials, and discloses a polymethyl terephthalate-containing anticorrosive material and a preparation method thereof.The preparation method comprises the steps that polymethyl terephthalate, carbon fibers, phenolic resin, quaternary ammonium salt modified graphene oxide, amino acid benzoxazine and bentonite are added into a stirrer and stirred, and a mixture is obtained; the corrosion-resistant material containing the polymethyl terephthalate is prepared. Phosphorus, nitrogen and silicon elements contained in the quaternary ammonium salt modified graphene oxide and amino acid benzoxazine have good flame retardant effects, and benzoxazine can form a heat-resistant phenolic resin structure at high temperature, so that the material shows higher thermal decomposition temperature and flame retardant property. The quaternary ammonium salt group and the graphene oxide structure improve the corrosion resistance of the material.