30results about How to "Good flame retardant synergistic effect" patented technology

The invention belongs to the field of flame retardant materials, and particularly relates to a composite flame retardant containing a microcapsule-coated intumescent flame retardant and a preparation method. The composite flame retardant containing the microcapsule-coated intumescent flame retardant consists of the following components in percentage by mass: 60-94 percent of microcapsule intumescent flame retardant, 5-25 percent of flame-retardant synergist, 0.9-10 percent of smoke suppressant and 0.1-5 percent of hindered amine light stabilizer. The preparation method comprises the following steps: preparing the microcapsule-coated intumescent flame retardant; placing the microcapsule-coated intumescent flame retardant, the flame-retardant synergist, the smoke suppressant and the hindered amine light stabilizer into a high-speed mixer for mixing uniformly, and discharging to obtain the composite flame retardant containing the microcapsule-coated intumescent flame retardant. Multiple components in the composite flame retardant can play roles in retarding flame in a synergetic way, so that the flame retardance of a high polymer material is improved remarkably, the production of toxic and harmful smog in a burning process can be suppressed, and the flame retarding efficiency is increased greatly.

The invention relates to a grade-1E K2-type radiation cross-linked halogen-free flame-retardant cable material for a nuclear power plant and a preparation method thereof, belonging to the field of new chemical materials. The cable material comprises raw materials including base resin EVA (ethylene-vinyl acetate copolymer), flame retardants A and B, a flame retardant synergist, basic antioxidants 1010 and 168, a radiation-resistant auxiliary agent 4,4'-thiobis(6-tertiary-butyl-3-methylphenol) and a processing agent; and the preparation method comprises the process steps of material weighing, pretreatment, mixing, extrusion granulation, drying and the like. The cable material is a red-phosphorus-free halogen-free environment-friendly flame-retardant material, phenoxy polyphosphazene is used as a main flame retardant in a flame-retardant system of the cable material, an inorganic flame retardant is auxiliary, the flame-retardant system accounts for a small weight percentage of the material, and the cable material is high in flame-retardant efficiency and excellent in mechanical properties, processability and radiation resistance, so that the cable material is a novel environment-friendly flame-retardant material which has excellent comprehensive properties and is suitable for a nuclear power plant environment.

The invention discloses a halogen-free flame retardant LLDPE material and a preparation method thereof. The material comprises the components in parts by weight as follows: 100 parts of LLDPE resin, 10-30 parts of a toughening compatilizer, 10-20 parts of a lubricating dispersing agent and 350-450 parts of halogen-free composite flame retardant, wherein the halogen-free composite flame retardant comprises magnesium hydroxide/aluminum hydroxide, zinc borate and microencapsulated red phosphorus in a weight ratio of (10.5-11.5):1: (1.05-1.15). The preparation method of the material comprises the steps as follows: components are poured into a high-speed mixer for mixing until the temperature is increased to 90 DEG C-105 DEG C; the components are discharged, cooled and extruded in a melting manner; then, the components are cooled in a water tank; and finally, the material is obtained through traction granulation. The halogen-free flame retardant LLDPE material has a good flame retardant property, and the limit oxygen index is higher than 40 %; and meanwhile, a mechanical property is excellent, the tensile strength is higher than 18 MPa, and the breaking elongation ratio is higher than 75%.

The invention discloses a melamine-modified lignin coated red phosphorus flame retardant and application thereof in ABS (Acrylonitrile Butadiene Styrene) resin, which belongs to the field of polymer materials. In the invention, lignin, aldehyde, melamine, red phosphorus and dispersant are mainly used as raw materials, and Mannich reaction and a chemical coprecipitation method are used to prepare melamine-modified lignin coated red phosphorus flame retardant. The melamine-modified lignin coated red phosphorus flame retardant disclosed by the invention can significantly improve the surface properties and instability of red phosphorus, and improve the compatibility with the polymer material. The flame retardant has a good flame retardant effect when applied in ABS resin, and the used lignin is a renewable biomass material, which is cheap and easy to obtain.

The invention discloses a halogen-free flame-retardant SEBS (styrene-ethylene-butadiene-styrene block copolymer) thermoplastic elastomer composition and a preparation method thereof. The raw material formula of the composition is composed of the following components by mass percent: 19-30% of SEBS, 10-17% of paraffin oil, 50-60% of magnesium hydroxide, 4-10% of boron-containing phenyl phosphonate flame retardant and 0.2-0.4% of antioxidant. The composition is prepared by the steps: mixing the boron-containing phenyl phosphonate flame retardant with magnesium hydroxide in a high-speed mixer to obtain a halogen-free flame retardant complex; and sufficiently and uniformly mixing swelled SEBS, the halogen-free flame retardant complex and the antioxidant, melting, mixing and extruding by a twin-screw machine, cooling, pelleting and drying. According to the invention, the boron-containing phenyl phosphonate flame retardant not only has flame retardant synergistic action with magnesium hydroxide, but also has a effect, and can well improve the mechanical properties of the halogen-free flame-retardant SEBS thermoplastic elastomer composition, so that the processing performance of the composition is excellent.

The invention discloses a novel halogen-free flame retardant modification thermoplastic elastomer data line sheath material. The novel halogen-free flame retardant modification thermoplastic elastomer data line sheath material is characterized by comprising, by weight, 100-104 parts of SEBS, 65-68 parts of paroline, 29-31 parts of polypropylene, 21-23 parts of maleic anhydride grafted polypropylene, 3-4 parts of antioxygen B215, 81-83 parts of magnesium hydroxide, 10.5-12 parts of expanded graphite, 1.6-1.7 parts of a silane coupling agent A-171, 8-9 parts of absolute ethyl alcohol, 2-3 parts of stearic acid, 9-11 parts of calcium carbonate, 2-3 parts of silicone master batch, 1-1.5 parts of zinc oxide, 5-7 parts of maleic acid and 1.5-2 parts of polyvinyl alcohol. According to the novel halogen-free flame retardant modification thermoplastic elastomer data line sheath material, a blend of the paroline modified SEBS and the polypropylene is used as a matrix, and the composition proportion is scientific and reasonable, so that the obtained product is high in tensile strength, good in thermostability, pliable, tough, good in processing fluidity, remarkable in flame retardant efficiency, free of halogen, environmentally friendly, capable of being widely applied to power lines, data lines and the like.

The invention discloses a heat-resistant fire-retardant anti-freeze thermoplastic elastomer material. The heat-resistant fire-retardant anti-freeze thermoplastic elastomer material is prepared from the following raw materials: SEBS, PP, HDPE, LDPE, naphthenic oil, maleic anhydride, terpene resin, a lubricant, silicone master batch, ethylene propylene rubber, coumarone, chlorinated polyether, organic modified bentonite, organic silicon resin, other auxiliaries, hydrated alumina, an auxiliary fire retardant, an antistatic agent and turpentine. A wear-resistant heat-resistant fire-retardant anti-freeze thermoplastic elastomer presents good heat resistance performance, and has excellent low temperature resistance performance at the same time, a low temperature brittle temperature of the wear-resistant heat-resistant fire-retardant anti-freeze thermoplastic elastomer can reach -65 DEG C, and the defect that existing elastic materials are brittle at low temperatures and easy to soften at high temperatures is overcome; an obtained shaped product is in elasticity and plasticity balance, and has a good fire retardant effect, and the thermoplastic elastomer is light in weight, excellent in weather resistance performance, and is environmentally friendly.

The invention discloses a core-shell flame retardant modified epoxy resin coating and a preparation method thereof. The preparation method comprises the following six steps: preparing an ammonium polyphosphate suspension, preparing a chitosan solution, preparing a polyglutamate solution, preparing chitosan coated ammonium polyphosphate, preparing ammonium polyphosphate co-coated with polyglutamate and chitosan, and preparing the core-shell flame retardant modified epoxy resin coating. The core-shell flame retardant prepared by the invention has a good flame retardant synergistic effect. In the thermal decomposition process, phosphoric acid and polyphosphate derived from ammonium polyphosphate promote dehydration and carbonization of chitosan and polyglutamate, so that more carbon residues are left, further decomposition of the epoxy resin is inhibited along with the residue of more carbon residues, the maximum thermal weight loss rate is reduced, and the thickness of the shell layer of the ammonium polyphosphate core-shell flame retardant co-coated with the polyglutamate and the chitosan is controllable, so that the formation of a carbon layer can be further controlled, and the flame retardance of the epoxy resin is obviously improved.

The invention discloses a heat-resisting and flame-retardant epoxy resin adhesive. The heat-resisting and flame-retardant epoxy resin adhesive is prepared from the following raw materials in parts by weight: 65 to 85 parts of epoxy resin with a fluorene-containing structure, 3 to 15 parts of phenolic epoxy resin, 10 to 25 parts of 2-ethyl-hexyl glycidyl ether, 20 to 35 parts of 9,9-bis(4-aminophenyl) fluorene, 5 to 12 parts of 2,6,10-trimethyl-2,6,10-triazaundecane, 2 to 4.5 parts of curing accelerator, 20 to 35 parts of flexibilizer, 2 to 8 parts of pentaerythritol, 1 to 5 parts of ammonium polyphosphate, 2 to 15 parts of phosphorus and nitrogen flame retardant, 0.2 to 1.3 parts of defoaming agent, 0.2 to 1.5 parts of stabilizer, 1 to 5 parts of polyetheretherketone, 2 to 5 parts of calcium silicate, 1 to 5 parts of chlorite, 1 to 4 parts of aluminum silicate, 1 to 2 parts of magnesium oxide and 2 to 5 parts of expandable graphite. The heat-resisting and flame-retardant epoxy resin adhesive disclosed by the invention has the advantages of high heat resistance, excellent flame retardant property and high bonding strength with a matrix.

The invention discloses a flame-retardant anti-bacterial sizing agent of a cotton-linen fiber fabric, and a preparation method and an application method of the flame-retardant anti-bacterial sizing agent. After a special phosphorus-bromine synergic system is applied to the cotton-linen fiber fabric, a brominated flame retardant is decomposed under high temperature so as to be quickly dispersed toa surface of a cotton-linen fiber, so that short-time combustion and flame spread of the cotton-linen fiber fabric are inhibited; a phosphorus flame retardant is decomposed to obtain phosphoric acid,and the phosphoric acid is adsorbed to a surface of a cotton fiber so as to form a carbonization layer, so that combustible materials can be effectively isolated, and a favorable flame-retardant synergistic effect is achieved.

The invention relates to a silicon-halogen synergic flame retardant compound and a preparation method thereof. The compound has the structural formula shown in the specification. The preparation method comprises the following steps of: at 20 DEG C, dropwise adding equimolar organic solvent solution of tribromophenylepoxypropyl ester into silicon tetrachloride; after the solution is completely added dropwise, keeping temperature at 60-80 DEG C, and reacting for 4-6 hours; dropwise adding chloroethanol of a certain molar ratio at 35 DEG C; keeping temperature at 50-70 DEG C and reacting for 3-6 hours; and purifying to obtain a light yellow liquid product tri(2-chloroethyl)-2-chloro-3-(2,4,6-tribromophenoxy)propyl silicate. The compound is an efficient flame retardant and is suitable to be used as a flame-retardant plasticizer of polyvinyl chloride, polyurethane, epoxy resin, unsaturated resin and the like; and the production technology is simple, the equipment investment is low, and the industrial production is easy to realize.

The invention discloses a calcium molybdate migration-resistant flame-retardant sheath material which is prepared from the following raw materials in parts by weight: 90-94 parts of SEBS (styrene-ethylene-butadiene-styrene), 65-68 parts of paraffin oil, 29-31 parts of stearic acid, 21-23 parts of stearic acid graft maleic anhydride, 3-4 parts of antioxidant B215, 81-83 parts of magnesium hydroxide, 4.3-5 parts of graphene, 1.6-1.7 parts of silane coupling agent A-171, 8-9 parts of anhydrous ethanol, 6-8 parts of pentaerythritol, 12-14 parts of carbon black, 6-7.5 parts of calcium molybdate, 3-4 parts of antioxidant 168, 13-15 parts of natural rubber and 1-1.5 parts of calcium zinc heat stabilizer. By using the paraffin-oil-modified SEBS/stearic acid blend as the matrix, the components are proportioned scientifically and reasonably, so the matrix has favorable compatibility with the flame retardant and other compounding agents and does not have the phenomenon of compounding agent migration. The product has the advantages of excellent flame retardancy, favorable mechanical properties and favorable low-temperature flexibility, can not have the phenomenon of migration and precipitation after being used for a long time, and can be used for data lines and the like.

The invention particularly discloses a flame-retardant molecular chain grafted mesoporous silica modified epoxy resin coating and a preparation method of the flame-retardant molecular chain grafted mesoporous silica modified epoxy resin coating. The method relates to synthesis of a flame-retardant molecular chain and a preparation process of aminated mesoporous silica, and the flame-retardant molecular chain grafted mesoporous silica is obtained through an ammonium phosphate reaction. The flame-retardant molecular chain grafted mesoporous silica modified epoxy resin coating is synthesized by taking epoxy resin, flame-retardant molecular chain grafted mesoporous silica, glycerol monostearate, organic micronized wax powder and simethicone as raw materials. The problems that an inorganic compound flame retardant is weak in flame retardance, a traditional epoxy resin coating is poor in toughness and the like are solved; and the flame retardance and mechanical performance of the epoxy resin coating are improved through the good synergistic effect of the flame-retardant molecular chain and mesoporous silica.

The invention discloses a composite protection sleeve material with added carbon fibers for a high-shielding data line. The composite protection sleeve material is composed of, by weight, 100-104 parts of SEBS, 65-68 parts of paraffin oil, 29-31 parts of polypropylene, 21-23 parts of maleic anhydride grafted polypropylene, 3-4 parts of antioxidant B215, 81-83 parts of magnesium hydrate, 4.3-5 parts of expanded graphite, 1.6-1.7 parts of silane coupling agent A-171, 8-9 parts of absolute ethyl alcohol, 2-3 parts of zinc borate, 8-9.5 parts of natural rubber, 13-15 parts of carbon fiber, 4-6 parts of superfine carbon black, 2-2.5 parts of sodium dodecyl benzene sulfonate and a proper amount of distilled water. According to the composite protection sleeve material with the added carbon fibers for the high-shielding data line, the blend of the paroline, the modified SEBS and the polypropylene serves as the base, in the process of processing the surfaces of the carbon fibers and the superfine carbon black and adding the carbon fibers and the superfine carbon black to a product, the dispersibility of powder can be improved, meanwhile, a very good shielding effect is achieved, the bending resisting performance of the product can be improved, and the composite protection sleeve material can be used for manufacturing flexible lines such as data lines.