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49results about How to "Smoke suppression" patented technology

Preparation method of coated halogen-free flame-retardant foamable polystyrene

The invention belongs to the field of expandable polystyrene heat insulating materials, and particularly relates to a preparation method of coated halogen-free flame-retardant foamable polystyrene. The method comprises the following steps: adding polyvinyl alcohol and tricalcium phosphate into deionized water, and evenly mixing to obtain a mixed solution A; adding ammonium polyphosphate, melamine polyphosphate or PNP intumescent flame retardant into styrene, and adding benzoyl peroxide to obtain a mixed solution B; adding the mixed solution B into the mixed solution A to react, and adding a foaming agent to react to obtain halogen-free flame-retardant foamable polystyrene granules; and adding the prepared granules into a phenol formaldehyde resin or melamine resin binding agent containing small amounts of alkali silicate water solution and smoke inhibitor to carry out coating, thereby finally obtaining the coated halogen-free flame-retardant foamable polystyrene granules. The coated halogen-free flame-retardant foamable polystyrene has the advantages of excellent thermal insulation and heat shielding properties, and outstanding flame retardancy and smoke inhibition property, and can be used a flame-retardant architectural thermal insulation material.
Owner:LIAONING TECHNICAL UNIVERSITY

Formaldehyde purification inflaming retarding oriented strand board and manufacturing method thereof

The invention relates to a paint-free decorative overlay fitment board, in particular to a formaldehyde purification inflaming retarding oriented strand board and a manufacturing method thereof, and belongs to the wood processing industry. The formaldehyde purification inflaming retarding oriented strand board comprises a base material layer, an upper surface layer decorative film adhesive layer and a lower surface layer decorative film adhesive layer. The upper surface layer decorative film adhesive layer and/or the lower surface layer decorative film adhesive layer are immersed with an amino resin adhesive solution and a formaldehyde decomposition adhesive solution, the base material layer is an oriented strand board layer, the oriented strand board layer comprises an upper surface layer, a lower surface layer and a core layer shaving layer, wherein the glue mixing wood shavings on the upper and lower surface layers are longitudinally arranged in the fiber direction, the glue mixing wood shavings on the core layer shaving layer are transversely arranged in the fiber direction, an inflaming retarding layer is arranged between the lower surface shaving layer and the core layer shaving layer, and an inflaming retarding layer is arranged between the upper surface shaving layer and the core layer shaving layer. The manufacturing method of the paint-free decorative overlay fitment board comprises the steps of base material sanding, formaldehyde decomposition adhesive solution preparation, decorative film adhesive manufacturing, assembling and pressing and sticking. The formaldehyde purification inflaming retarding oriented strand board is realistic in effect, low in cost and good in formaldehyde purification effect.
Owner:DEHUA TB NEW DECORATION MATERIAL CO LTD

Method for manufacturing phase-change heat absorption swelling fire-retardant wood and swelling fire-retardant wood

ActiveCN106738149AAvoid spreadingIt has the function of filling and densifyingWood treatment detailsPressure impregnationSolid woodCarbon layer
The invention discloses a method for manufacturing phase-change heat absorption swelling fire-retardant wood and the swelling fire-retardant wood. The manufacturing method includes the following steps that the wood is processed and manufactured according to the dimensions required, so that a solid wood component is obtained; the solid wood component is subjected to degreasing and duct dredging pretreatment, and accordingly the pretreated solid wood component can be obtained; the pretreated solid wood component is put into phase-change heat absorption swelling fire-retardant steeping liquor for conducting vacuum pressure impregnation treatment, and then drying is performed, so that the solid wood component filled with a phase-change heat absorption swelling fire-retardant material is obtained; the solid wood component filled with the phase-change heat absorption swelling fire-retardant material is subjected to sanding shaping and surface closing protective treatment, and accordingly the phase-change heat absorption swelling fire-retardant wood is obtained. The swelling fire-retardant wood obtained through the manufacturing method achieves phase-change heat absorption in the heating process of the wood and forms a swelling foam carbon layer under the fire condition, the change of fires can be lowered and fire losses are reduced.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY

Grade-1E K2-type radiation cross-linked halogen-free flame-retardant cable material for nuclear power plant and preparation method thereof

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.
Owner:SICHUAN INST OF ATOMIC ENERGY +1

Fireproof aluminium-plastic panel containing nanometer flame retardant and core material special for fireproof aluminium-plastic panel containing nanometer flame retardant

The invention relates to the technical field of aluminium-plastic panels, in particular to a fireproof aluminium-plastic panel containing a nanometer flame retardant and a core material special for the fireproof aluminium-plastic panel containing the nanometer flame retardant. The core material comprises the following raw materials in parts by weight: 45-55 parts of polyethylene, 25-30 parts of polycarbonate, 15-18 parts of modified enhanced nylon, 2-3 parts of the nanometer flame retardant, 1.5-2.5 parts of modified nanometer cerium oxide, 2-6 parts of a synergist, 3-8 parts of a compatilizerand 1-2 parts of a lubricant. The core material has excellent flame-retardant and fireproof performance, the mobility is high, a core layer can be easily produced through extrusion molding and injection molding, and the core layer produced by using the core material is high in strength and excellent in hardness, resists bending, is not liable to deform, and is excellent in weather resistance; andby adopting the nanometer flame retardant, through combined action of the nanometer flame retardant and the synergist, the core material can have the excellent flame retardant and fireproof performance, and not only can the synergist have an flame-retardant effect, but also a powder state of the synergist can promote the dispersity of materials, so that the rheological property of the core material in the subsequent technologies is improved.
Owner:东莞华尔泰装饰材料有限公司

Method for preparing flame-retardant core-shell type waterborne acrylate resin coating

ActiveCN104086698AImprove the shortcomings of yellowingImprove wear resistanceCoatingsMANGANESE ACETATEPolymer science
The invention relates to a method for preparing a flame-retardant core-shell type waterborne acrylate resin coating. The method comprises the following steps of adding water, an emulsifier and acrylic acid, raising the temperature to 40 DEG C, stirring for 30 minutes, adding a monomer A, emulsifying for 15-45 minutes, raising the temperature to 70 DEG C, starting to introduce recirculation water, raising the temperature to 80 DEG C, reacting for 2 hours, dropwise adding an initiator for 2-4 hours, and reacting for 1-2 hours; adding manganese amino acid, stirring and reacting for 1-4 hours at 80 DEG C, adding a metal salt to adjust the pH value to be 4, adding manganese acetate, stirring and reacting for 1-2 hours at 60 DEG C to obtain a core layer emulsion; simultaneously dropwise adding a monomer B and an initiator into the core layer emulsion for 1-3 hours, stirring and reacting for 3 hours at 70-85 DEG C, adding a crosslinking agent, reacting for 1-3 hours at 70-90 DEG C, cooling to 40 DEG C, adding molybdenum di(2-ethylhexyl)phosphorodithioate and an emulsifier, reacting for 40 minutes, adding the material B, stirring and reacting for 1-3 hours at 65-85 DEG C and adding aqueous ammonia to adjust the pH value to be 7-8 to obtain the flame-retardant core-shell type waterborne acrylate resin coating. By virtue of the preparation method, the flame resistance of the acrylate resin can be greatly improved and the shortcoming of yellowing of a traditional acrylate resin film can also be improved.
Owner:HEBEI CHENYANG INDAL & TRADE GROUP CO LTD +1

Environment-friendly flame-retardant high-temperature-resistant oil-resistant special flexible cable material and production method thereof

The invention belongs to the technical field of cable materials, and particularly relates to a green flame-retardant high-temperature-resistant oil-resistant special flexible cable material and a production method thereof. Comprising the following raw materials in parts by weight: 40-60 parts of crosslinked polyethylene, 20-30 parts of polydimethylmethylvinylsiloxane, 10-20 parts of polyurethane resin, 10-30 parts of aniline formaldehyde resin, 5-15 parts of nano calcium carbonate, 2-6 parts of zinc stannate, 5-10 parts of kaolin, 15-25 parts of a flame retardant, 3-5 parts of a vulcanizing agent, 1-3 parts of a lubricant, 2-3 parts of an anti-aging agent, 2-6 parts of a plasticizer and 3-5 parts of a stabilizer. Through the crosslinked polyethylene, the polydimethylmethylvinyl silicon, the flame retardant and the zinc stannate, the cable material can have high flame retardant performance, substances harmful to a human body cannot be generated during combustion, the zinc stannate can inhibit smoke, the visibility of people is improved when a fire breaks out, and the cable material is environment-friendly and energy-saving. And meanwhile, the cable material has relatively high high-temperature resistance and a relatively large temperature application range, and is suitable for various different environments.
Owner:JIANGSU DONGFANG CABLE MATERIAL

Preparation method of core-shell type water-based acrylic resin paint for building and furniture

ActiveCN105111876AImprove the shortcomings of yellowingImprove wear resistanceFireproof paintsMANGANESE ACETATEPolymer science
The invention relates to a method for preparing a flame-retardant core-shell type waterborne acrylate resin coating. The method comprises the following steps of adding water, an emulsifier and acrylic acid, raising the temperature to 40 DEG C, stirring for 30 minutes, adding a monomer A, emulsifying for 15-45 minutes, raising the temperature to 70 DEG C, starting to introduce recirculation water, raising the temperature to 80 DEG C, reacting for 2 hours, dropwise adding an initiator for 2-4 hours, and reacting for 1-2 hours; adding manganese amino acid, stirring and reacting for 1-4 hours at 80 DEG C, adding a metal salt to adjust the pH value to be 4, adding manganese acetate, stirring and reacting for 1-2 hours at 60 DEG C to obtain a core layer emulsion; simultaneously dropwise adding a monomer B and an initiator into the core layer emulsion for 1-3 hours, stirring and reacting for 3 hours at 70-85 DEG C, adding a crosslinking agent, reacting for 1-3 hours at 70-90 DEG C, cooling to 40 DEG C, adding molybdenum di(2-ethylhexyl)phosphorodithioate and an emulsifier, reacting for 40 minutes, adding the material B, stirring and reacting for 1-3 hours at 65-85 DEG C and adding aqueous ammonia to adjust the pH value to be 7-8 to obtain the flame-retardant core-shell type waterborne acrylate resin coating. By virtue of the preparation method, the flame resistance of the acrylate resin can be greatly improved and the shortcoming of yellowing of a traditional acrylate resin film can also be improved.
Owner:HEBEI CHENYANG INDAL & TRADE GROUP CO LTD +1

Environment-friendly anti-oxidation cable protective sleeve material

The invention discloses an environment-friendly anti-oxidation cable protective sleeve material. The material comprises the following raw materials in parts by weight: 30-40 parts of ethylene-propylene rubber, 10-16 parts of butyl rubber, 10-15 parts of epoxy resin, 4-10 parts of organic silicon resin, 4-8 parts of an aluminum hydroxide colloid, 5-12 parts of glass fibers, 0.7-1.3 parts of paraffin oil and 1-5 parts of talcum powder, 4-9 parts of diatomite, 0.5-3 parts of zinc stearate, 0.6-1.5 parts of a vulcanizing agent DPC, 2-5 parts of a coupling agent, 1-4 parts of an assistant crosslinker TAIC, 1-4 parts of an anti-aging agent and 1.5-4 parts of an antioxidant. The preparation process of the protective sleeve material is as follows: adding the ethylene propylene-rubber, the butyl rubber, the epoxy resin and the organic silicon resin into a screw extruder, carrying out fusion for 10-20 minutes, controlling the melting temperature to be 125-135 DEG C, and then adding the remainingraw materials, carrying out extrusion after the fusion is carried out for 20 minutes, placing the extruded material in a flat vulcanizing machine, and carrying out pressing and crushing to obtain theenvironment-friendly anti-oxidation cable protective sleeve material. The protective sleeve material has excellent oxidation resistance, and the service life is prolonged.
Owner:安徽电信器材贸易工业有限责任公司

Activated carbon pressing device

The invention discloses an activated carbon pressing device. The activated carbon pressing device comprises an upper machine box and a lower machine box, wherein the upper machine box is fixedly connected to the top of the lower machine box, a working channel is arranged between the upper machine box and the lower machine box, a first cavity is formed in the upper machine box, and a connection conversion device is arranged in the first cavity; the two sides of the first cavity are provided with second cavities correspondingly, the sides, far away from the first cavity, of the second cavities are provided with third cavities, and a particle pressing device is arranged in one of the third cavities. According to the device, the connection conversion device, the particle pressing device and apowder pressing device are arranged, so that the conversion of manufacturing powder shape/ granular shape of the activated carbon is realized, a pressing unified structure is arranged, accessories areconvenient to maintain and replace, a pressing rod drives a first motor or a second motor to press down, when a granulating head and a powder pressing block are in contact with the activated carbon,the first motor or the second motor works to drive the granulating head or the powder pressing block to rotate, meanwhile, a reamer blade is used to grind the activated carbon, so that the working efficiency is improved.
Owner:安徽金叶碳素科技有限公司
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