67results about How to "Increase char formation" patented technology

One embodiment of an intumescent composition comprises a halogenated polymer, antimony oxide, and intercalated graphite, while one embodiment of an intumescent additive mixture comprises antimony oxide and intercalated graphite. One embodiment of the method of making an intumescent composition comprises melt blending a halogenated polymer with antimony oxide, and intercalated graphite.

The invention relates to a wood fiber-PVC composite material and a preparation method thereof, and relates to the composite material and the preparation method and solves the problem that: the wood fiber-PVC composite material has high combustibility and can produce a plurality of black smoke and noxious gas when in burning. The wood fiber-PVC composite material is mainly formed by weight part asfollow: 100 to 600 parts of PVC resin, 30 to 700 parts of wood fiber material, 3 to 145 parts of expansion flame retardant, 1 to 55 parts of copper oxide, 6 to 75 parts of heat stabilizer, 4 to 60 parts of plasticizer and 4 to 65 parts of compatibilizer. The preparation method is as follows: firstly, the material is mixed in advance; secondly, the material is squeezed out for shaping. The wood fiber-PVC composite material of the invention is tested according to the GB/T8924-2005 standard; the wood fiber-PVC composite material of the invention has an oxygen index bigger than 35 percent, has longignition time and does not produce drop melting, and belongs to nonflammable material. The preparation method for the wood fiber-PVC composite material of the invention is simple and easy for operati on, has low requirement to devices and is convenient for spreading and application.

The invention discloses a flame-retardant polylactic acid material of a ternary composite flame-retardant system and a preparation method of the flame-retardant polylactic acid material. The ternary composite flame-retardant system comprises hibiscus cannabinus, nano-zinc oxide and a polymer type phosphorus-containing fire retardant. The preparation method of the flame-retardant polylactic acid material comprises the following steps: (1) performing alkali treatment on the hibiscus cannabinus, and assembling and loading the nano-zinc oxide on the processed hibiscus cannabinus surface; (2) dissolving the polymer type phosphorus-containing fire retardant in chloroform, adding the hibiscus cannabinus loaded with the nano-zinc oxide in the chloroform containing the polymer type phosphorus-containing fire retardant, stirring for a while, adding polylactic acid particles, and when the polylactic acid is completely dissolved and the solution is free of bubbles, forming film on a glass plate, volatilizing at room temperature, and drying; (3) adding the dried thin film in a twin-screw extruder, extruding, cooling and pelletizing the material to prepare the flame-retardant polylactic acid material of the ternary composite flame-retardant system. The flame-retardant polylactic acid material is simple in formula, free of halogen, environment-friendly and high in flame retardant efficiency, can reduce molten drop phenomenon, and effectively reduces further spreading of fire.

Polymer extruded or expanded foams that contain modifier-free nanoclays are provided. The addition of modifier-free nano-clays to extruded or expanded foam products improves the thermal properties, mechanical properties, and fire performance properties. Water or a water-containing compound is used as a carrier for the modifier-free nanoclays. The final foamed products may be utilized in building application such as foamed insulation products and in underground applications such as highway insulation. A preferred modifier-free nanoclay is Na⁺MMT. Modifier-free nanoclay particles may be injected into a polymer during an extrusion foaming process. In another embodiment of the invention, polymer beads containing water/nanoclay particles are formed using inverse emulsion/suspension polymerizations and expanded or extruded into a foamed product. In a further embodiment, a modifier-free nanoclay particle is encapsulated in a super-absorbent material, which may be used in an expanding or extruding process.

The invention discloses alkane foaming B1-grade flame-retardant polyurethane rigid foam and a preparation method thereof. Alkane is adopted as a foaming agent, polyether/polyester polyol with a specific flame-retardant effect, a catalyst, a foam stabilizer, a flame retardant, other special assistants and the like are matched to prepare combined polyether, and the combined polyether reacts with polyisocyanate to generate high-index PIR foam. The B1 flame-retardant polyurethane rigid foam disclosed by the invention is mainly suitable for a continuous line production process, and has the advantages of high flame retardance, environmental protection, low density, high production tolerance, excellent foam performance and the like compared with other types of PIR plate foam.

The invention discloses an inflaming retarding system and a preparation method of an inflaming-retarding real silk. The inflaming retarding system is a phosphorus-silicon collaborative system, wherein a phosphorus component is methacryloyloxyethyl dimethyl phosphate and a silicon component is a vinyl silane coupling agent. The preparation method comprises the following steps of: preparing an inflaming-retarding working solution and adjusting the pH (Potential of Hydrogen) value of the working solution to 4-4.5; immersing a real silk textile into the inflaming-retarding working solution, and heating the real silk textile at 80-85 DEG C for 10-60 minutes; and washing the real silk textile by water and drying the real silk textile to obtain the inflaming-retarding real silk. A fire retardant provided by the invention is durable, and no formaldehyde is released in an inflaming retarding and sorting process; and the smoke amount of the real silk textile in a combustion process is as low as required.

The invention discloses a halogen-free expanding flame retardant containing polymeric macromolecule triazine rings and a preparation method of the halogen-free expanding flame retardant. According to the flame retardant, benzodiazepines diamine is introduced, the thermal stability of products is improved, the charring forming amount is increased, and the flame retardant is directly applied to various thermoplastic and thermosetting materials without the synergistic effect of an APP. Meanwhile, each single triazine ring contains 1-oxy-phospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]octyl group, is high in contents of phosphorus and hydroxyl, and can serve as a reactive and expanding flame retardant. The flame retardant belongs to a polymerization reaction product formed by substituting 1-oxy-phospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]octane and benzodiazepines diamine with cyanuric chloride and connecting the triazine rings with one another.

The invention relates to a preparation method of flame retardant paper, and belongs to the technical field of paper flame retardant materials. Through a sol-gel method, the surface of ammonium polyphosphate is modified by methyl triethoxysilane to prepare microcapsule wrapped ammonium polyphosphate; the waterproof performance and heat stability of ammonium polyphosphate are improved; the heat stability and char forming amount of flame retardant paper in a high temperature zone are enhanced; the heat release during the combustion process is effectively reduced, the flame retardant performance of flame retardant paper is obviously strengthened; the porosity and strong adsorbing performance of diatomite are utilized, diatomite, modified ammonium polyphosphate, antimony pentoxide, and aluminumhydroxide carry out in-situ polymerization to prepare a composite flame retardant having a good smog absorbing performance; diatomite is taken as the carrier, due to the porosity and strong absorbingperformance of diatomite, in-situ polymerization happens on the surface of diatomite and in the pores of diatomite; the prepared composite flame retardant has a strong flame retardant performance; due to the added composite flame retardant, paper has a good flame retardant effect, at the same time, the physical properties of paper are barely influenced, the paper quality is improved, and the application range is enlarged.

The invention provides environment-friendly flame-retardant hard polyurethane foaming plastic. Polyisocyanates, polyether polyol, a foaming agent, a foam stabilizing agent, a catalyst, glycerinum and a flame retardant are taken as raw materials, wherein the flame retardant is synthesized novel halogen-free flame retardant 1-butyl-3-methylimidazole dibutyl ester ionic salt ([Bmim]DBP); the polyether polyol, the foaming agent, the foam stabilizing agent, the catalyst, the glycerinum and the flame retardant are uniformly stirred and mixed in a certain ratio at the room temperature in a high-speed dispersing machine, are further stirred and mixed uniformly with polyisocyanates added in a certain ratio, are subjected to foam molding in a mold, and are aged, so that the environment-friendly flame-retardant hard polyurethane foaming plastic can be obtained.

A preparing method of an environmental friendly flame-retardant polycarbonate composite material is disclosed. The method includes mixing nanometer zinc oxide, nanometer titanium dioxide, nanometer aluminium hydroxide, glass fibre, kaolin, nanometer zinc stannate, ferrocene, zinc molybdate, basic sodium aluminium carbonate, calcium stearate, zinc stearate and a silane coupling agent KH-540 to obtain a modified filler; melting and extruding polyvinyl butyral, polyvinylidene fluoride, octafluoro-diphenyl diglycidylether, styrene-acrylonitrile copolymer, melamine resin and the modified filler in a twin-screw extruder to obtain dispersed master batch; adding polycarbonate, the dispersed master batch, tris(2,4-diisobutyl) phosphate, hexaphenoxycyclotriphosphazatriene, potassium perfluorobutanesulfonate, bisphenol A bisphthalonitrile, a plasticizer and an oxidant into a twin-screw extruder, melting and extruding. The composite material prepared by the method is good in heat resistance and excellent in flame retardance.

The invention discloses a polyurethane/PVC crosslink cable compound for automobile cables. The polyurethane/PVC crosslink cable compound is characterized by being prepared from the following raw materials in parts by weight: 100-102 parts of polyether urethane, 20-21.5 parts of diethyl aluminium hypophosphite, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminium titanate, 50-52 parts of PVC, 1.6-1.8 parts of a cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 4-5 parts of zinc oxide, 3-4 parts of sodium stannate, 3-4.2 parts of liquid paraffin, 2-2.5 parts of urea, 1-1.2 parts of bis(P,P-bis-ethylhexyl diphosphato)ethanediolato titanate, 9-11 parts of 600-mesh calcium carbonate, 5-6 parts of high abrasion furnace black and 2-3 parts of maleic acid di-n-butyl ester. According to the polyurethane/PVC crosslink cable compound for automobile cables and the preparation method of the polyurethane/PVC crosslink cable compound, provided by the invention, by scientific and reasonable compatibility of the components and the controllable process, the product prepared by adopting the preparation method has excellent abrasive resistance, can maintain flexibility at a low temperature, is firm, not liable to cracking, and long in service life.

The invention discloses an environment-friendly, high-performance and high-CTI flame retardancy enhanced nylon material and a preparation method thereof. The material is prepared from the following components in percentage by weight: 32-90% of a nylon raw material, 5-35% of glass fiber, 10-25% of a flame retardant TF9103, 0-5% of a flame-retardant synergist, 0-1% of a lubricating agent and 0-1% ofan antioxidant. The material and the preparation method thereof disclosed by the invention have the beneficial effects that the prepared environment-friendly and high-CTI flame retardancy enhanced nylon material meeting the environmental protection requirements has excellent mechanical properties and flame retardancy and meets requirements of ROHS and WEEE instructions; and by adding a home-madeefficient flame-retardant synergist, the dosage of the flame retardant can be effectively reduced, the CTI value can be increased, the reduction of the content of the flame retardant has positive significance for improving processability and saving cost, and the high CTI value can increase the application of composite materials and meet application requirements of more products; and the material can be applied to electronic and electrical equipment such as contactors and breaker shells.

The present invention discloses a polyester having moisture absorption, fire retardation and ultraviolet resistance composite function. According to the present invention, a fire retardation agent, inorganic nanometer anti-ultraviolet powder, a moisture absorption modification monomer and the like are added to the polymerization raw material, wherein the fire retardation agent and the moisture absorption modification monomer have the synergy effect so as to improve the moisture absorption property of the polyester, such that the chemical structure of the polyester is modified so as to make the polyester concurrently have functions of strong moisture absorption, strong fire retardation and strong ultraviolet resistance.

The invention discloses a halogen-free flame retardant environment-friendly flexible cable sheathing compound for a portable power source. The sheathing compound is characterized by being prepared from the following raw materials in parts by weight: 100-102 parts of polyether urethane, 20-21.5 parts of diethyl aluminium hypophosphite, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminium titanate, 50-52 parts of PVC, 1.6-1.8 parts of a cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 4-5 parts of urea, 5-6 parts of powdered phenolic resin, 7-8 parts of cotton pulp, 1.5-2 parts of magnesium methacrylate, 3-4 parts of white oil, 9-11 parts of carbon nano tubes, 2-3 parts of zinc oxide and 1-1.2 parts of allyltriethoxysilane. The halogen-free flame retardant environment-friendly flexible cable sheathing compound provided by the invention is not liable to cracking, fold-resistant, halogen-free, flame retardant, harmless to the environment and human bodies, long in service life and suitable for manufacture of cable materials of portable power sources and sheathing compounds of mobile phone data cables.

The invention discloses a novel outdoor power cable sheath material preventing moths and mildew. The material is characterized by being prepared from, by weight, 100-102 parts of polyether urethane, 20-21.5 parts of aluminum diethylphosphinate, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminum titanate, 50-52 parts of PVC, 1.6-1.8 parts of cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 0.5-0.6 part of capsaicine, 0.2-0.3 part of imidacloprid, 1-1.2 parts of methyltrimethoxysilane, 2-3 parts of liquid silicone rubber, 9-11 parts of zeolite molecular sieves, 1.5-2 parts of OBPA mildew preventing agents, 3-4 parts of methyl silicone oil and 6-7 parts of high-abrasion-resistance carbon black. The prepared material has excellent flame-retardant performance and is excellent in moth preventing property, mildew preventing property and mechanical property, the technology can be controlled conveniently in an industrialized mode, and the material is suitable for outdoor cables.

The invention discloses a preventing water and inflaming retarding composite flexible cable sheath material used in wet environment. The flexible cable sheath material is characterized by comprising the following raw materials: be weight, 100-102 parts of polyether urethane, 20-21.5 parts of aluminum diethylphosphinate, 17-18 parts of melamine cyanurate, 4.3-4.5 parts of aluminium titanate, 50-52 parts of PVC, 1.6-1.8 parts of cross-linking agent TAIC, 6-7 parts of calcium stearate, 20-22 parts of acetyl tributyl citrate, 3-4 parts of polydimethylsiloxane, 3-4 parts of glycerin monostearate, 5-7 parts of antimonous oxide, 4-5 parts of emulsified asphalt, 4-5 parts of bisphenol A polycarbonate and 8-10 parts of talcum powder. The prepared product has good water resistance, good mud resistance, good decay resistance, good flame resistance, and has soft material. So that the prepared cable sheath has large bending amplitude, is especially suitable for the places where have high fireproofing requirement in coastal region having high humidity, and is especially suitable for ocean engineering.

The invention discloses a halogen-free nano composite flame retardant and a preparation method thereof. According to the method, the halogen-free nano composite flame retardant is prepared by coating magnesium hydroxide, zinc hydroxystannate and polyphosphazene layer by layer. Through compounding of magnesium hydroxide and zinc hydroxystannate, the flame retardation effect of the material is improved. Through synergism of polyphosphazene, a compact isolation protection layer is generated on the surface of the material, contact between combustibles and flames is isolated, carbon dioxide, ammonia gas and other nonflammable gases are released, and the oxygen content is reduced. The composite flame retardant nano structure with a large specific surface area improves the carbon residue amount during material combustion, a compact carbon layer plays a barrier role, and the compound halogen-free nano flame retardant can greatly improve the flame retardant property of the material.

The invention discloses an ultraviolet-resistant flame-retardant optical cable material which is composed of the following raw materials in parts by weight: 0.6-1 part of 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole, 100-130 parts of polyvinyl chloride, 20-27 parts of polystyrene, 3-4 parts of sodium hypophosphite monohydrate, 2-3 parts of polyformaldehyde, 0.2-0.3 part of 37-37% hydrochloric acid, 4-6 parts of chlorospirophosphate, 5-7 parts of aluminum chloride hexahydrate, 0.1-0.2 part of triethylamine, 10-12 parts of graphite powder, 4-6 parts of polyvinyl butyral resin, 0.1-0.3 part of magnesium oxide, 0.6-1 part of dimethyl chlorophthalate, 1-2 parts of calcium palmitate, 0.1-0.2 part of lauryldimethylamine oxide, 0.3-0.5 part of ethylene glycol monobutyl ether and 0.6-2 parts of aluminum dihydrogen phosphate. The ultraviolet-resistant flame-retardant optical cable material can perform the function of lowering the temperature of the combustion zone, and some phospho-oxygen free radicals and the like generated during pyrolysis can capture free radicals generated by polystyrene segment pyrolysis, thereby lowering the heat release value of the material.

The invention relates to a composite halogen-free flame-retardant smoke suppression agent of a PVC wood-plastic composite material and a preparation method and application of the agent, which relate to the composite halogen-free flame-retardant smoke suppression agent and the preparation method and application of the agent, and aim at solving the problems that the PVC wood-plastic composite material is combustible, a great amount of smoke is produced when the composite material is combusted, the addition amount of the existing PVC wood-plastic composite material flame-retardant smoke suppression agent is large, the flame-retardant effect and the smoke suppression effect are poor, and the existing PVC wood-plastic composite material flame-retardant smoke suppression agent is harmful to the health of people. The composite halogen-free flame-retardant smoke suppression agent consists of ammonium polyphosphate, melamine, pentaerythritol and copper oxide. The preparation method comprises the following steps: I, preparing an expansion-type flame-retardant agent; II, preparing the composite halogen-free flame-retardant smoke suppression agent. The application method comprises the following steps: I, weighing raw materials; II, preparing high-temperature materials; III, preparing a premix; IV, extruding and forming. The flame-retardant smoke suppression agent solves the problems that the wood-plastic composite material is combustible, a great amount of smoke is produced when the composite material is combusted, the addition amount of the existing flame-retardant smoke suppression agent is large, the effect is poor, and the existing flame-retardant smoke suppression agent is harmful to the health of people. The composite halogen-free flame-retardant smoke suppression agent is used for resisting the combustion and suppressing the smoke of the PVC wood-plastic composite material.

The invention belongs to the field of nanometer materials, and discloses a flame-retardant nanometer film and a preparation method and application thereof. The preparation method of the flame-retardant nanometer film comprises the steps that hydroxyapatite is dried and then subjected to ball milling, and after ultrasionic cell-break treatment is conducted for a period of time, nanometer hydroxyapatite emulsion is obtained; nanocellulose and nanometer hydroxyapatite are prepared into a blend solution according to certain proportion, film formation is conducted under the condition of constant temperature and humidity, and the flame-retardant nanometer film is obtained. The flame-retardant nanometer film has good flame retardance, the nanocellulose and the nanometer hydroxyapatite have the very good biocompatibility, and the flame-retardant nanometer film can be applied to the fields of flame-retardant materials, flexible electronic devices, biological and medical materials and the like.

The invention discloses a wollastonite powder modified flame-retardant optical cable material, which is composed of the following raw materials in parts by weight: 10 to 13 parts of wollastonite powder, 0.1 to 0.2 part of stannous sulfide, 4 to 6 parts of triethylene glycol di-2-ethylhexoate, 2 to 3 parts of octabromoether, 100 to 130 parts of polyvinyl chloride, 3 to 4 parts of polystyrene 20-2 sodium hypophosphite monohydrate, 2 to 3 parts of paraformaldehyde, 0.2 to 0.3 part of hydrochloric acid (35-37%), 4 to 6 parts of chlorinated dichloropentate, 5 to 7 parts of aluminum chloride hexahydrate, 0.1 to 0.2 part of triethylamine, 0.4 to 1 part of N,N'-ethylenebisstearamide, 1 to 2 partso f sodium gluconate, 0.1 to 0.2 part of polysorbate 80, and 0.7 to 2 parts of polyvinylpyrrolidone. The provided optical cable material can dilute the flame and reduce the temperature of combustion area; at the same time, phosphor and oxygen free radicals generated during the cracking process can capture free radicals that are generated by cracking polystyrene chain segments, thus the thermal stability of the optical cable material is improved, and the heat release value of the material is reduced.