43results about How to "Has a synergistic flame retardant effect" patented technology

The invention discloses a phosphorus-containing essence inflaming-retarding cellulose-based thermal insulation material and a preparation method thereof. The preparation method comprises the followingsteps that 1, urea and a phosphorylation modifier are added to a cellulose suspension solution with the concentration of 1-10wt%, and at 150-165 DEG C, after even stirring and a sufficient reaction,through washing, phosphorus-containing cellulose is obtained; 2, the phosphorus-containing cellulose is prepared into a suspension solution with the concentration of 0.5-2wt%, the pH of the suspensionsolution is adjusted to be 9.5-12, and under the stirring condition, after a sufficient reaction, through washing and fiber separation, phosphorus-containing cellulose nanofibers are obtained; 3, phosphorus-containing groups in the phosphorus-containing cellulose nanofibers are subjected to ionization modification through an in-situ formation method or an after-treatment crosslinking method for obtaining the phosphorus-containing essence inflaming-retarding cellulose-based thermal insulation material. The preparation technology is simple, the raw material source is wide, the cost is low, theenvironment protection is achieved, and the obtained thermal insulation material is low in heat conductivity coefficient and density and good in flame retardant property.

The invention discloses a thermosetting resin composition. The thermosetting resin composition is prepared from, by solid weight, 10-100 parts of hydrocarbon resin, 20-100 parts of phosphorus-containing maleimide ester and 0.1-8 parts of an initiating agent. According to the thermosetting resin composition, the maleimide ester with multifunctional long-strain structures and rigid imide rings is adopted to cooperate with the flexible hydrocarbon resin to form the thermosetting resin composition, the maleimide ester and the hydrocarbon resin achieve interaction, and finally the thermosetting resin composition and prepreg and a laminated board which are used for a printed circuit and prepared from the thermosetting resin composition have the advantages of being excellent in dielectric property, heat resistance, adhesive property, flame resistance, bending strength and toughness, high in peel strength, low in water absorption, excellent in processing technology property and the like.

The invention discloses a flame-retardant PET and PC composite material and a preparation method thereof. The composite material comprises the following raw materials, by weight part, 40-60 parts of polycarbonate, 25-45 parts of polyethylene glycol terephthalate, 5-15 parts of inorganic powder, 0.5-1.5 parts of a flame retardant, 3-15 parts of a toughening compatilizer, 0.5-1 part of an anti-oxidant, and 0.2-1 part of a lubricant. The toughening compatilizer is one of an ethylene-butyl acrylate-glycidyl methacrylate copolymer and an ethylene-methyl acrylate-glycidyl methacrylate copolymer. The flame-retardant PET and PC composite material is improved in toughening effect at a certain degree and is light in weight and good in flame retardance.

The invention discloses N-P synergetic flame retardant nylon 66 and a preparation method thereof. The N-P synergetic flame retardant nylon 66 is characterized in that a derivative of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide react with diamine to prepare a flame retardant A containing P; a binary acid melamine salt and a cyanuric acid diamine salt which are equal in molar mass are mixed to prepare a flame retardant B containing N; the flame retardant A and the flame retardant B react with a nylon 66 salt to prepare the N-P synergetic flame retardant nylon 66, wherein the flame retardant A and the nylon 66 are subjected to copolymerization, and the flame retardant B and the nylon 66 are subjected to in-situ polymerization. The N-P synergetic flame retardant nylon 66 has a melting point range of 255-265 DEG C, a relative viscosity range of 2.0-3.0, a flame retardant rating of V0, tensile strength of 70.0-82.0 MPa, notch impact strength of 3.5-5.0 KJ / m<2>, bending strength of 100-120 MPa and smoke density of 10-15%. The N-P synergetic flame retardant nylon 66 can be used for spinning and manufacture of engineering plastics.

The invention belongs to the field of preparation of inhibition materials, and particularly relates to a flame-retardant rigid polyurethane foam material, and a preparation method and application thereof. The material comprises a mixture A and a mixture B, wherein the mixture A comprises the following components in parts by weight: 77.47-100 parts of a polyol, 0-22.53 parts of a glycol phosphinate, 1 part of an amine catalyst, 0.5 part of an organic tin catalyst, 2 parts of water, 2 parts of a foam stabilizer and 3 parts of triethanolamine; the mixture B is prepared from the following components in parts by weight: 149 to 152 parts of an isocyanate, 0 to 20.25 parts of expandable graphite, 0 to 20.25 parts of a phosphate and 0 to 7.5 parts of coal ash. The flame-retardant rigid polyurethane foam material possesses integrated condensed phase flame resistance, gas phase flame resistance and expanded graphite physical flame resistance, and the coal ash with synergistic flame resistance effect and excellent bonding performance is added, so that the rigid polyurethane foam material has excellent flame resistance, can not only be taken as a inhibition material for preventing and treatingspontaneous combustion of coal, and can also be taken as a sealing material and a thermal insulation material.

The invention discloses a preparation method and application of flame-retardant polyether. The flame-retardant polyether contains N, P and Br elements and is reactive flame-retardant polyether. According to the preparation method, the flame-retardant polyether is prepared from the following raw materials in parts by weight: 5-10 parts of ethylenediamine, 20-30 parts of tri(3-hydroxypropyl)phosphine, 23-28 parts of dibromoneopentyl glycol, 0.5-2.0 parts of dimethylamine and 30-51.5 parts of epoxy propane. Polyurethane foaming plastics prepared from the flame-retardant polyether have a favorable flame-retardant effect and have the advantages of stable flame retardance and better foam quality as comparison with polyurethane foaming plastics prepared by additionally adding a flame retardant.

The invention provides a formula of a low-viscosity, low-smoke and flame-retardant high-speed elevator balance compensating chain PVC sheath material, which is adapted to a rapid moulding technology and meets an environment-friendly requirement, and a preparation method thereof. The raw material formula of the low-viscosity, low-smoke and flame-retardant high-speed elevator balance compensating chain PVC sheath material comprises the following components in parts by weight: 100-150 parts of PVC resin, 60-120 parts of a plasticizer, 4-8 parts of a stabilizer, 2-8 parts of a lubricant, 30-60 parts of a flame retardant, 5-15 parts of a smoke suppressant, 5-20 parts of a viscosity reducer and 0.3-1.0 part of a pigment. The preparation method comprises the following steps: mixing the PVC resin to 70-80 DEG C in a kneading machine, then adding a certain amount of an auxiliary agent, continuing mixing, and discharging after the temperature of a mixed material reaches 85-95 DEG C; sending the mixed material into a cooling stirrer, and cooling to 40-50 DEG C; finally, placing in a conical twin-screw extruder, and performing extrusion granulation at the extruding temperature of 130-170 DEG C to obtain a low-viscosity, low-smoke and flame-retardant elastic PVC material. The special low-viscosity, low-smoke and flame-retardant high-speed elevator balance compensating chain PVC sheath material prepared by the preparation method provided by the invention can be applied to the rapid moulding technology of an elevator balance compensating chain sheath, has relatively good appearance, high toughness, high heat aging resistance and high heat stability, and has low viscosity, low smoke performance and flame retardance.

The invention discloses a flame retardant containing multivalent phosphorus element and a preparation method thereof. A chemical structure of the flame retardant containing multivalent phosphorus element is as shown in a formula (I), wherein R1 and R2 are respectively phosphorus-containing structures with different valence states. The chemical structure of the flame retardant containing multivalent phosphorus element simultaneously contains a plurality of phosphorus atoms with different valence states, a condensed phase flame retardant mechanism can be exerted to promote carbon formation of apolymer in a combustion process, and a gas phase flame retardant mechanism can be also exerted to captures active radicals in the combustion process. The phosphorus content and the number of aromaticrings can be adjusted, so that the flame retardant is suitable for flame retardant treatment of different polymer matrices. A limit oxygen index of epoxy resin treated with the flame retardant is obviously increased, the vertical burning grade is up to V-0 grade, and the flame retardant has the advantages of good carbon formation property, high flame retardant efficiency and the like.

The invention discloses a ceramic silicon rubber and a preparation method thereof. A plurality of inorganic fillers are added into the raw silicon rubber, so that the ceramic silicon rubber prepared by the method has high flame retardant property due to the synergistic flame retardant function between the inorganic fillers and the raw silicon rubber; and meanwhile, other mechanical performances of the silicon rubber are not influenced by the added fillers.

The invention relates to fire-retardant paint with a steel structure, which is prepared from the following raw materials proportioning by weight: 45 to 60 of composite substrate resin, 6 to 8 of melamine, 6 to 8 of pentaerythritol, 16 to 20 of ammonium polyphosphate, 4 to 10 of expansible graphite, 2 to 5 of nano magnesium hydroxide, 1 to 3 of zinc phosphate, 1 to 3 of zinc borate, 2 to 5 of aluminum hydroxide, 3 to 5 of aluminum polyphosphate, 6 to 9 of titanium dioxide, 0.5 to 0.8 of flatting agent and 15 to 20 of acetone. The paint has excellent capabilities of fire prevention and corrosion prevention.

The invention provides a preparation method for a low-dielectric halogen-free flame retardant glass fiber pre-impregnation material. The preparation method comprises the following steps of: preparing low-dielectric flame retardant epoxy resin by adopting a two-step process of enabling a phosphorus flame retardant and low-molecular-weight double-end hydroxyl polyphenyl ether to respectively react with epoxy resin according to phosphor-nitrogen cooperative flame retardant effect and the low-dielectric characteristic of polyphenyl ether; compounding the low-dielectric epoxy flame retardant resin with liquid epoxy resin, and uniformly mixing the compound with a latent curing agent to prepare a resin system for pre-impregnation material; and preparing the resin system for the pre-impregnation material into a film by a film laminating machine, compounding the film with the glass fiber or fabric by a compounding machine to obtain the low-dielectric halogen-free flame retardant pre-impregnation material. The glass fiber pre-impregnation material disclosed by the invention is excellent in flame retardant performances, small in dielectric constant, capable of satisfying the production process adopting the two-step process of thermally melting the pre-impregnation material, and suitable for large-scale production of the pre-impregnation material for electric appliances.

The invention belongs to the field of preparation of chemical retardation materials, and in particular relates to a flame-retardant rigid polyurethane foam material and its preparation method and application. The material includes mixture A and mixture B, and the mixture A includes the following components in parts by weight: 77.47-100 parts of polyol, 0-22.53 parts of ethylene glycol phosphinate, 1 part of amine catalyst, organic tin 0.5 parts of catalyst, 2 parts of water, 2 parts of foam stabilizer, 3 parts of triethanolamine; the mixture B includes the following components in parts by weight: 149-152 parts of isocyanate, 0-20.25 parts of expandable graphite, 0-20.25 parts of phosphate part, 0-7.5 part of fly ash. The flame-retardant rigid polyurethane foam material obtained in the present invention integrates condensed phase flame-retardant, gas-phase flame-retardant and physical flame-retardant effects of expanded graphite, and adds fly ash with synergistic flame-retardant effect and excellent adhesive performance, so that Rigid polyurethane foam has excellent flame retardant properties and can not only be used as a chemical retardant material for preventing coal spontaneous combustion, but also as a sealing material and insulation material.

The invention discloses a flame-retardant PET and PC composite material and a preparation method thereof. The composite material comprises the following raw materials, by weight part, 40-60 parts of polycarbonate, 25-45 parts of polyethylene glycol terephthalate, 5-15 parts of inorganic powder, 0.5-1.5 parts of a flame retardant, 3-15 parts of a toughening compatilizer, 0.5-1 part of an anti-oxidant, and 0.2-1 part of a lubricant. The toughening compatilizer is one of an ethylene-butyl acrylate-glycidyl methacrylate copolymer and an ethylene-methyl acrylate-glycidyl methacrylate copolymer. The flame-retardant PET and PC composite material is improved in toughening effect at a certain degree and is light in weight and good in flame retardance.