35results about How to "Has synergistic flame retardant effect" patented technology

The invention provides a phosphorus-containing fluorine-containing synergic flame-retardant compound and a preparation method thereof, relating to flame-retardant compounds. The preparation method comprises the following steps: carrying out reaction on a diamido compound and 5-bis(trifluoromethyl)benzaldehyde in a first solvent, carrying out rotary evaporation, and drying to obtain an intermediate containing carbon-nitrogen double bond; and carrying out reaction on the intermediate containing carbon-nitrogen double bond and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide in a second solvent, precipitating the product with a precipitant, washing with the precipitant, and drying to obtain the phosphorus-containing fluorine-containing synergic flame-retardant compound. The compound simultaneously comprises the flame-retardant elements phosphorus and fluorine, and the phosphorus and fluorine have the synergic flame-retardant actions; and thus, the compound can be used as a flame retardant and has favorable flame-retardant effect. The introduced fluorine element can enhance the heat stability and chemical stability, lower the surface energy of the material and lower the dielectric constant and hydroscopic property of the material, thereby satisfying the required properties of the electronic packaging material. The compound contains two active groups, thereby being beneficial to enhancing the compatibility with the high-polymer material, improving the loss of the flame retardant and enhancing the flame retardancy.

Belonging to the technical field of fireproof material development, the invention specifically relates to a composite flame retardant and a method for preparation of a flame retardant fiber board from the same. The composite flame retardant is composed of aluminum hydroxide, borax and sodium silicate in a mass ratio of 4-6:3-5:2-4. The composite flame retardant provided by the invention has the advantages of good flame retardant effect, low toxicity, good smoke suppression and environmental friendliness, can significantly improve the flame retardant properties of the fiber board, and has cheap price, thus being suitable for industrial production of the flame retardant fiber board.

The invention relates to a preparation method of polyurethane fireproof glue used for a building. The polyurethane fireproof glue used for the building is prepared by mixing a prepolymer component anda polyol component, wherein the prepolymer component is prepared from diisocyanate, antimony trioxide, asbestos fiber, polypropylene carbonate polyol and a catalyst, and the polyol component is prepared from polypropylene carbonate polyol, a chain extender, a crosslinking agent and bromine-containing polyol; and antimony trioxide, asbestos fiber, bromine-containing polyol have a synergistic flameretardant effect, and the obtained fireproof glue can give consideration to flame retardant property, flame retardant durability and mechanical properties at the same time.

The invention relates to the technical field of anti-rut agents, and particularly discloses an anti-rut agent and a preparation method thereof. The anti-rut agent comprises polyethylene, an inorganic filler, an organic modifying agent, a color master batch and flame retardant. By coating the inorganic filler and the flame retardant with the polyethylene and the organic modifying agent, the anti-rut agent accelerates the formation of a polymer and asphalt into a network crosslinked structure, thereby reducing ruts on an asphalt mixture pavement. Meanwhile, the flame-retardant component dispersed in the asphalt crosslinked structure can be decomposed under a high-temperature condition to achieve a surface coating effect, thereby effectively inhibiting the spreading and persistency of fire. Besides, the invention also provides an asphalt mixture containing the anti-rut agent.

The invention discloses a preparation method of regenerated fibers. The preparation method comprises the following steps: step 1, carrying out primary treatment on waste raw materials; step 2, mixing,melting and granulating; step 3, preparing graphene master batch; step 4, mixing modified polyester fiber master batch and the graphene master batch and melting; blending to obtain regenerated modified polyester fibers; step 5, loosening, carding and crossly lapping; then carrying out bundle cutting and packaging. Aiming at improving the quality of the raw materials, a raw material mixing processis carried out under a vacuum environment; the raw materials are sufficiently mixed and the quality of a finished product is improved. A phosphorus polymer, such as triphenyl phosphate or trimethyl phosphate is added by adopting a spraying manner, so that on one hand, the phosphorus polymer can be used for effectively inhibiting irreversible decomposition of the polyester fibers under a high-temperature condition and damages to ester group functional groups are avoided; on the other hand, the phosphorus polymer and graphene are subjected to oxidization reaction and have a synergistic flame-retarding effect. Furthermore, the regenerated fibers prepared by the invention have antistatic and bacterium-inhibiting effects.

The invention relates to the technical field of wood processing and particularly relates to a wood composite flame retardant and a preparation method thereof, and an application thereof in production of flame retarding plywood. The wood composite flame retardant includes, by weight, 25-35 parts of melamine, 5-15 parts of sodium dihydrogen phosphate, 0.1-0.5 parts of sodium hydroxide, 30-40 parts of borax and 30-40 parts of boric acid. The raw materials of the wood composite flame retardant have synergistic flame retarding effects, so that the flame retardant is good in flame retarding effect, is low-toxicity, has good smoke inhibition property and is environment-friendly, and is also low in cost. The flame retarding plywood produced from the flame retardant is significantly improved in flame retarding performance, which can reach C-level fireproofing grade in national standard. Bonding strength and maximum fracture load of the plywood are approximated to plywood produced without the flame retardant.

The invention provides a preparation method of flame-retardant cool cellulose fibers for summer curtains. The preparation method comprise the following steps of preparing a composite flame retardant slurry, preparing an ice-cooling agent slurry, preparing a blended spinning solution, and performing spinning. The flame retardant contains magnesium hydroxide microcapsules, and rare earth lanthanum chloride microcapsules are added into the composite flame retardant, so that the flame retardant effect of the flame retardant can be enhanced, lanthanum chloride has a relatively good antibacterial effect, and therefore a curtain prepared from the fiber has a relatively good antibacterial effect. The dry breaking strength of the prepared fiber is 1.86-2.13 cN/dtex, the wet breaking strength is 0.95-1.16 cN/dtex, the limit oxygen index is 28.3-30.6%, the staphylococcus aureus inhibition rate is 99.2-99.9%, the escherichia coli inhibition rate is 98.6-99.9%, the UPF value is 42-44, and the UVA value is 3.92-4.65%.

The invention discloses a heat-preservation and sound-insulation wall. The heat-preservation and sound-insulation wall comprises a wall body. The wall body is composed of a plurality of hollow cubic structures which are connected with one another. Valves are arranged on the hollow cubic structures. Valve caps which are matched with the valves are arranged on the valves. A plurality of supporting columns which are evenly distributed are arranged in each hollow cubic structure. The heat-preservation and sound-insulation wall is good in sound-insulation and heat-preservation effect, low in weight, convenient to construct and capable of being used repeatedly.

The invention discloses a halogen-free flame-retardant TPVC ( polyvinyl chloride elastomer) material and a preparation method therefor. The halogen-free flame-retardant TPVC material is prepared from the following components in parts by weight: 100 parts of PVC resin, 50-100 parts of a plasticizer, 5-10 parts of a heat stabilizer, 2-4 parts of a lubricant and 40-100 parts of a halogen-free flame retardant; the plasticizer consists of dioctyl terephthalate, epoxy fatty acid methyl ester, diphenyl isooctyl phosphate and chlorinated paraffin in a weight ratio of 100 to (10-20) to (100-50) to (5-15); and the halogen-free flame retardant consists of magnesium hydroxide, microencapsulated red phosphorus, antimonous oxide and zinc borate in a weight ratio of 100 to (10-20) to (5-15) to (5-15). The halogen-free flame-retardant TPVC material disclosed by the invention has relatively good flame resistance and mechanical properties, and belongs to a green environment-friendly material which is harmless on a human body and environment.

The invention discloses a coal mine roadway spraying material, and relates to the technical field of novel materials for mines. The material comprises a base layer and a surface layer, the base layer is prepared from the following raw materials in parts by weight: 25-35 parts of Portland cement, 25-35 parts of fly ash, 8-12 parts of clay, 4-8 parts of latex powder, 10-15 parts of a fiber reinforced material, 0.2-0.3 part of styrene-acrylic emulsion, 0.1-0.2 part of polyvinyl alcohol, 1-2 parts of water glass and 35-42 parts of water, the surface layer is a polyurethane layer, the supporting performance is excellent, corrosion and leakage are prevented, and safe production of a coal mine can be further ensured.

The invention relates to the technical field of wood processing, in particular to a wood composite flame retardant and a preparation method thereof and application to production of flame-retardant plywood. The composite flame retardant for the plywood is prepared from the following raw materials by weight: 60-100 parts of polyethylene glycol, 5-15 parts of sodium bicarbonate, 0.1-0.5 part of polypropylene resin, 30-40 parts of vinyl acetate and 30-40 parts of boric acid. The raw materials of the wood composite flame retardant have a synergistic flame-retardant effect, and the flame retardant has the beneficial effects of being good in flame-retardant effect, low in toxicity, good in smoke suppressing property and environmentally friendly, and is low in price. The flame-retardant performance of the flame-retardant plywood prepared through the wood composite flame retardant can be remarkably improved, and the requirement of the national standard C-level fireproof grade can be met. The gluing strength and the maximum failure load of the flame-retardant plywood are both similar to plywood not treated with the flame retardant.

The invention discloses a graphene-doped flame-retardant material and a preparation method thereof. The graphene-doped flame-retardant material comprises the following raw materials in parts by weight: 40-60 parts of polyether polyol, 100-130 parts of isocyanate, 30-50 parts of a flame retardant, 0.2-1 part of a catalyst, 5-10 parts of a chain extender, 2-8 parts of graphene filler, 1-5 parts of a stabilizer and 2-5 parts of deionized water. The preparation method comprises the following steps: S1, drying polyether polyol and isocyanate; S2, uniformly mixing and dispersing polyether polyol, a flame retardant, a catalyst, a chain extender, a graphene filler, a stabilizer and deionized water to obtain a mixture; S3, enabling isocyanate and the mixture to be subjected to a reaction, and preparing a graphene-doped flame retardant material. The flame-retardant material prepared by the invention is excellent in flame-retardant property, relatively good in mechanical property, relatively low in heat conductivity coefficient, relatively high in practical value and worthy of popularization.

The invention discloses an additive for flame-retardant adhesive as well as the flame-retardant adhesive and an application method thereof. The additive for the flame-retardant adhesive is prepared from the following raw materials: molybdenum trioxide, diatomaceous earth, mineral oil, silica gel powder, ethylene bis stearamide and polyethylene glycol; the flame-retardant adhesive is prepared fromthe following raw materials: an ethylene-vinyl acetate copolymer, polyurethane resin, glyceryl tristearate, the additive for the flame-retardant adhesive, a bacteriostatic agent, a heat stabilizer anda diluent; the application method comprises the steps of adding diluent into the flame-retardant adhesive according to the required viscosity before use, evenly mixing, and detecting the viscosity ofthe flame-retardant adhesive for use. The additive for the flame-retardant adhesive is reasonable in formula and good in flame-retardant effect, does not contain phosphorus element, and does not cause pollution to the environment; the prepared flame-retardant adhesive is easy in obtaining of raw materials, has good adhesion, flame retardance, antibacterial property and stability, and is simple inpreparation method and good in mixing effect; the viscosity of the flame-retardant adhesive can be adjusted according to the needs, so that the application scope of the flame-retardant adhesive is wide.