118results about How to "Good self-extinguishing" patented technology

A flame-retardant fastening product (a molded article and a fabric product) which is made of a flame retardancy-imparting material or contains or/and is coated with the flame retardancy-imparting material, wherein the flame retardancy-imparting material comprises 100 parts by weight of a synthetic resin and 1 to 400 parts by weight of a flame-retardant containing an inorganic flame-retardant which exhibits such a volume change as expansion and/or foaming at the time of combustion, more preferably at least one member selected from the group consisting of hydrated metallic compounds and thermally expansible graphite, the flame-retardant being dispersed in the synthetic resin. Such flame-retardant products are useful as various molded articles and fabric products, such as surface fasteners, slide fasteners, and resin buttons.

The invention discloses a high-flame-retardant and halogen-free polyolefin cable material and a preparation method thereof. The high-flame-retardant and halogen-free polyolefin cable material comprises the following components in parts by weight: 20-70 parts of ethylene copolymer, 5-30 parts of polyethylene, 10-60 parts of metal hydroxide, 3-20 parts of organic phosphate flame retardant, 3-30 parts of melamine compound, 4-10 parts of compatilizer and 2-5 of other additives. The preparation method comprises the following steps of: (1) firstly putting granular materials into a high-speed mixing machine, adding liquid additive after stirring for 30 seconds at low speed, mixing for 3 minutes at high speed, then stopping, adding the granular materials, mixing for 3 minutes at high speed, then stopping and obtaining premixed materials; and (2) adding the premixed materials into a mixer for mixing for 15 minutes, then mixing by double screws with same directions, finally extruding by single screw, carrying out air cooling, hot cutting and granulation, wherein the extruding temperature is set between 90-130 DEG C.

The structural adhesive containing nano material includes two components, the component A consists of epoxy resin, liquid polysulfide rubber, stuffing and nano SiO2, and the component B consists of modified curing agent, promoter, plasticizier, fine silica powder, fine titania powder, aluminum powder and coupling agent, with the ratio between component A and component B being 0.5-1.5 to 0.5-1.5. The liquid polysulfide rubber can increase the flexibility of the adhesive and the nano material can increase the contact area between the adhesive and adhered body and binding force, improve mechanical performance. The structural adhesive is dense, waterproof, flexible, antiaging, and has high adhering strength, shearing strength, high stability, etc.

The invention discloses a high-flame-retardant polypropylene material and a preparation method thereof. The material is composed of the following raw materials in parts by mass: 60-75 parts of homo-polypropylene aggregates, 5-15 parts of homo-polypropylene powder, 10-20 parts of a brominated flame retardant, 3-8 parts of an antimony flame retardant, 1-3 parts of a flame retardant synergist, 0-10 parts of a cooling master batch, 0-3 parts of a flexibilizer, 0-1 part of a lubricant, 0-1 part of an ultraviolet light absorber, and 0-1 part of an antioxidant. The preparation method of the material comprises the following steps: 1) uniformly mixing all materials in certain proportion; and 2) adding the obtained mixture into a twin-screw extruder, carrying out high-temperature mixing and shearing, and after the obtained object is subjected to water cooling, sequentially carrying out bracing and grain-sized dicing, so that the high-flame-retardant polypropylene material is obtained. The high-flame-retardant polypropylene material disclosed by the invention is excellent in flame resistance, good in self-extinguishment, excellent in aging resistance, good in insulating property and heat resistance, not easy to deform by heating, excellent in processing fluidity, and easy to shape.

The invention discloses ceramic flame-retardant and fireproof silicone rubber and a preparation method thereof. The silicone rubber contains the following components in parts by weight: 100 parts of raw silicone rubber, 10-50 parts of white carbon black, 10-100 parts of aluminum hydroxide, 10-50 parts of low-melting-point glass powder, 10-100 parts of sericite powder, 1-20 parts of hydroxyl silicone oil, 1-20 parts of hexamethyl disilazane, 0.1-3 parts of a platinum compound and 0.1-5 parts of a vulcanizing agent. The silicone rubber is good in flame retardance, excellent in mechanical property, safe and environmentally friendly, has good mechanical strength and insulating property after being ablated, is capable of preventing burnt objects from being damaged and keeping a circuit completefor a long time and can play a good fireproof role.

A resist composition for permanent protective coating of a printed wiring board, which resist composition is excellent in flame resistance and is obtained by incorporating as essential components a flame retardant containing 100 to 140 parts by weight of (a) aluminum hydroxide, 0.1 to 15 parts by weight of (b) a molybdenum compound and 0.1 to 10 parts by weight of (c) a zinc stannate type compound into 100 parts by weight of a resin.

The invention relates to a biodegradable composite prepreg cloth, and a preparation method and a device for the same. The composite prepreg cloth comprises a modified polylactic acid (PLA) resin accounting for 40-70 wt% of the composite prepreg and natural fiber. The preparation method comprises the following steps: conducting a continuous drying treatment on natural fiber; immersing the fiber with molten modified PLA; coating the modified PLA on the surface of the natural fiber; and rolling, cooling and winding to obtain the prepreg cloth. The device comprises an untwisting machine, an arrangement warping device, a direction control device, a friction roll, a tenslator, a film extruder, a gum dipping cooling device, and a winding device. Compared with the prior art, the invention has the advantages of large fiber draw ratio, obvious PLA enhancement effect, small wear of the extruder screw, simple process, energy saving and environment-friendliness.

The invention discloses a conductive silver adhesive for a high-power LED (light-emitting diode). The conductive silver adhesive comprises the following components in parts by weight: 18 to 25 parts of base resin and curing agent, 0.5 to 2 parts of coupling agent, 65 to 80 parts of conducting particles and 1 to 10 parts of carbon fiber, wherein the proportion of the base resin and the curing agent is determined according to the stoichiometric ratio of reaction functional groups, i.e. 1:1; and the base resin is a mixture consisting of 40 to 80 percent of epoxy resin and 20 to 50 percent of fluorine-containing fusible and soluble polyamide-imide resin. The conductive silver adhesive has very high tensile strength, heat resistance and flame resistance and can work in a working environment with high temperature and high pressure, and the service life of electronic appliances can be obviously prolonged. Therefore, the conductive silver adhesive has very good application prospect.

The invention provides ethylene propylene diene terpolymer low-smoke zero-halogen flame retardant soft rubber which is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene diene terpolymer, 80-100 parts of inorganic flame retardant, 20-30 parts of phosphorus nitrogen flame retardant and 15-25 parts of synergistic flame retardant. According to the invention, the flame retardant property and the mechanical property of the whole formula are comprehensively considered; the tensile strength is above 12MPa; the elongation at break is above 500%; the Shore A hardness is less than 70; LOI is more than or equal to 30%; and the rubber can meet the requirement of UL94-V0 level vertical combustion test. The ethylene propylene diene terpolymer low-smoke zero-halogen flame retardant soft rubber has excellent overall performance and can be widely applied to the flame retardant places, such as, cable insulators, jackets and sealing rings.

The invention discloses a highly environmental-friendly flame retardant reinforced PC/ABS blending material and a preparation method thereof. The flame retardant reinforced PC/ABS blending material comprises the following raw materials in percentage by weight: 50-80% of PC, 10-30% of ABS, 5-15% of flame retardant and 3-15% of carbon fiber. The carbon fiber is subjected to surface activating treatment. The flame retardant reinforced PC/ABS blending material obtained through the technical scheme of the invention has the many advantages, such as high strength, high flame retardance and high environmental-friendly property. By addition of the carbon fiber subjected to surface activation, stretching and bending performance of the blending material can be enhanced, and various organic volatile matter constituents in the PC/ABS can be adsorbed effectively by lots of micropores on the surface of the carbon fiber, so that multiple environmental indexes, such as material odor and TVOC (Total Volatile Organic Compounds), are improved, more importantly, the promotion of environmental performance is not at the cost of sacrificing the flame retardance of material, on the contrary, the flame retardance of the blending material is also promoted, the combustion time of the blending material away from the fire becomes shorter, and the self-extinguish ability of the blending material becomes better.

The invention relates to an irradiation crosslinked LSOH (low smoke halogen-free) high-flame-retardant polyolefin cable material and a preparation method thereof. The preparation method is characterized in that the irradiation crosslinked LSOH high-flame-retardant polyolefin cable material is prepared from linear low-density polyethylene resin, an ethylene-vinyl acetate copolymer, an ethylene-ethyl acrylate copolymer, aluminum hydroxide, magnesium hydroxide, 3.5 hydrated zinc borate, a high-viscosity organic silicon mixture, magnesium stearate, a phosphorus-containing halogen-free flame retardant, polyethylene wax, an antioxidant, a crosslinking agent, and the like through the steps of mixing the raw materials by using a closed mixing machine and then carrying out extrusion by using a six-temperature-period twin-screw extruder. An electric wire and a cable prepared by taking the irradiation crosslinked LSOH high-flame-retardant polyolefin cable material as an insulating layer not only have the advantages of good flame retardance, high light transmittance, good electrical insulation, good water resistance and the like, but also have the characteristics of high-temperature resistance level (can be used for a long time in a 105 DEG C environment), good mechanical and physical properties of insulating layers, and the like. The irradiation crosslinked LSOH high-flame-retardant polyolefin cable material can be used as a raw material of LSOH high-flame-retardant insulating layers of electric wires.

The invention provides high-flame-resistance filler comprising superfine talcum powder, light calcium carbonate, acrylate rubber, dioctyl sebacate, adhesive, barium stearate, nanoscale calcium oxide and silicon dioxide. The invention further provides a mining high-flame-resistance flexible cable comprising a cable core formed by a plurality of insulating wire cores, wherein the cable core is wrapped with an outer sheath layer; the insulating wire cores are coated with cured fire retardant coatings layers; a high-flame resistance filler layer is filled between the insulating wire cores and the outer sheath layer. By means of the high-flame-resistance filler and the mining high-flame-resistance flexible cable made from the high-flame-resistance filler, provided by the invention, the defects of poor flame resistance and poor self-extinguishing performance of existing flexible cables can be solved; the provided flexible cable has the advantages of excellent physical performance, mechanical performance, temperature resistance and flame resistance and good self-extinguishing performance.

The invention provides a flame-retardant polyethylene fabric with ultrahigh molecular weight and a preparation method thereof. The method comprises the following steps: firstly, carrying out a two-leaching and two-mangling process on a polyethylene fabric with ultrahigh molecular weight in a fire retardant solution for a polymer, which has the mass percent of 20%-30%, wherein the mangle expression is 70%; drying at 60 DEG C for 15min and drying the fabric; carrying out single-face or double-face coating on the surface of the fabric by utilizing a polyvinylidene fluoride solution with the mass percent of 10%-20%, and controlling the thickness of the coating to be 0.5mm-2mm; and drying the coating fabric at a drying temperature of 60 DEG C-85 DEG C to prepare the flame-retardant polyethylene fabric with the ultrahigh molecular weight. The oxygen index of the flame-retardant polyethylene fabric with the ultrahigh molecular weight is more than 27; the flame-retardant polyethylene fabric can be rapidly self-extinguished when leaving away from fire; meanwhile, the flame-retardant polyethylene fabric has flame-retardant, high-strength and non-ventilation performances; and the process method is simple, and industrial implementation is easy to realize. The fabric can be used for high-strength, flame-retardant and non-ventilation conditions in the fields of military affairs or terrorism prevention and the like.

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.

A non-halogen fire-retarding material for the conduit of electric wire, electric cable or optical cable is prepared from HCPE resin (51-73 wt%), non-haloen composite fire retardant (25-45%), assistant (1-5%) and stabilizer (0.1-2%) through mixing, dual-screw extruding out and granulating. Its advantages are high fire-retarding effect and not releasing a lot of toxic gas.

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof and the reaction product or mixture formed by contacting one or more alkoxysilane compounds with an organoaluminum compound.

The invention provides a halogen-free flame retardant phenolic epoxy glass reinforced plastic molding material, belonging to the technical field of polymer materials. The molding material comprises the following raw materials in parts by weight: 50-54 parts of phenolic epoxy resins, 10-15 parts of melamine resins, 4-8 parts of curing agent, 0.8-1.5 parts of curing accelerator, 6-9 parts of phosphate ester, 3-4 parts of phosphate, 1.3-2.2 parts of release agent, 44-48 parts of mineral filler, 1.1-1.5 parts of reinforcing agent and 25-28 parts of reinforced fibers. The molding material has the beneficial effects that the molding material has the characteristics of good heat resistance, excellent self-extinguishing effect, good strength and convenience in molding; and through tests, the bending strength is 88MPa, the heat deformation temperature is 240 DEG C and the flame retardance reaches grade V-0 (UL-94-V-0 1.6mm).

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalyst; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 70 to 98 mol percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 30 to 2 mol percent of one or more alkoxysilane compounds containing one or more 5- or 6-membered cyclic groups optionally containing one or more Group 14, 15 or 16 heteroatoms.

The invention relates to a modified geopolymer and a modified geopolymer composite comprising additive. The additive is preferably an athermanous additive. The modification is with one or more water-soluble compounds, the water-soluble compound is preferably selected from phosphorus compounds, nitrogen compounds, copper compounds, silver compounds, zinc compounds, tin compounds and magnesium compounds. Also, it relates to compositions which contain the modified geopolymer or modified geopolymer composite. The compositions preferably comprise vinyl aromatic polymer and are in the form of a foam.

The invention discloses a flame-retardant hard polyurethane thermal-insulation foam material and a preparation method thereof, and relates to the field of polymer materials. The foam material is composed of the following components in parts by weight: 100 parts of polyether polyol, 140 to 160 parts of polymethylene polyphenyl polyisocyanate, 30 to 50 parts of physical foaming agent HFC-365mfc, 1.5 to 5 parts of foam stabilizer, 1 to 3 parts of catalyst, and 50 to 105 parts of flame retardant. The preparation method comprises the following steps: drying polyether polyol, polymethylene polyphenyl polyisocyanate, and flame retardant powder, saving the processed materials for later use at a room temperature; taking polymethylene polyphenyl polyisocyanate as the component A, mixing other components, taking the mixture as the component B, carrying out a polymerization and foaming treatment to obtain a casting mould blank; after demoulding, and aging obtained casting mould blank to obtain the foam material with a density in a range of 60 to 80 kg/m3. The prepared foam material has the advantages of high flame retardant performance, excellent thermal insulation property, and good mechanical property. Furthermore, an III-generation HFCs type ODP-free environment-friendly foaming agent and environment-friendly flame retardant are adopted.

A non-aqueous electrolyte cell comprises a positive electrode, a negative electrode and a non-aqueous electrolyte containing a support salt. The non-aqueous electrolyte further comprises a phosphazene derivative. The phosphazene derivative having a specified structure functions as an electrode stabilizing agent or a non-combustion agent.

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 98.0 to 99.9 mol percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 2.0 to 0.1 mol percent of one or more alkoxysilane compounds.