172results about How to "Good smoke suppression" patented technology

The invention relates to a preparation method of magnesium-hydroxide-coated calcium carbonate inorganic composite flame retardant filler. The preparation method comprises the following steps: adding water to calcium carbonate powder and magnesium sulfate so as to prepare slurry, adding calcium hydroxide to the slurry at a certain temperature, stirring, reacting for a certain time, then filtering, washing, drying, depolymerizing, and carrying out surface modification, thus obtaining the magnesium-hydroxide-coated calcium carbonate inorganic composite flame retardant filler. The inorganic composite flame retardant filler prepared by using the method has the excellent flame retardant property and smoke suppression property of magnesium hydroxide, also has the excellent filling technological property of calcium carbonate and the enhanced mechanical property and auxiliary flame retardant and smoke abatement property of calcium sulphate dehydrate, integrates multiple functions of filling enhancement, flame retardancy, smoke abatement and the like; the production cost of a magnesium hydroxide flame retardant is reduced, the functions of the calcium carbonate filler are added; and the magnesium-hydroxide-coated calcium carbonate inorganic composite flame retardant filler has good application prospect.

The invention discloses an intercalated layered double hydroxide smoke inhibitor and a preparation method thereof. The smoke inhibitor is a layered structural material formed by assembling a laminated sheet consisting of metal cations and interlayer anions, wherein a specific composition general formula of the smoke inhibitor is M<2+>1-xM<3+>x(OH)2(A<n->)n / 2.mH2O. According to the preparation method disclosed by the invention, the intercalated layered double hydroxide smoke inhibitor is prepared by adopting a one-step coprecipitation method or a clean hydrothermal reaction at one step; the preparation method is simple and practical; according to the obtained intercalated layered double hydroxide smoke inhibitor, smoke inhibiting groups such as molybdate anions, an octamolybdate radical, a cuprate radical and a stannate radical are arranged at an interlayer, and smoke inhibiting elements such as iron and copper are introduced into the laminated sheet, so that a good carbon forming effect is realized, the smoke generating amount can be reduced, and the smoke inhibiting effect is synergically enhanced; meanwhile, a layered double hydroxide laminated sheet forms an alkaline porous substance at high temperature; the alkaline porous substance has greater specific surface area and can effectively adsorb smog; the prepared intercalated layered double hydroxide smoke inhibitor is applied to an ordinary rubber-plastic product and a high-temperature rubber-plastic product; the maximum density (Ds, max) at low additive amount (1phr) can be reduced by 87.3 percent; the intercalated layered double hydroxide smoke inhibitor is remarkable in smoke inhibiting effect and is a smoke inhibitor material with excellent performance.

The invention relates to a surface activation modification technology for an environment-friendly magnesium hydroxide flame retardant special for insulating materials. The flame retardant is a modified magnesium hydroxide composite flame retardant, and comprises the following components in part by weight: 80 to 95 parts of magnesium hydroxide, 1 to 10 parts of surface modifier, 0 to 5 parts of dispersing agent and 0 to 25 parts of flame-retardant aid. The environment-friendly magnesium hydroxide flame retardant is mainly applied to the field of the insulating materials, namely the application fields of laminated wood boards, copper-clad plates, insulating sleeves, insulating paper, insulating tape and the like. The environment-friendly magnesium hydroxide flame retardant belongs to a halogen-free environment-friendly product; and the prepared insulating materials have a good flame-retardant effect and an obvious smoke-inhibiting effect, and the mechanical properties and electric properties are improved.

The invention relates to the technical field of high polymer materials, and in particular relates to a high-flame-retardancy high-heat-resistance MPP pipe and a preparation method thereof. The MPP pipe comprises the following raw materials in parts by weight: 68-102 parts of polypropylene resin, 0.1-2.5 parts of an antioxidant, 2-8 parts of a compatilizer, 8-15 parts of a flame retardant, 1-5 parts of a synergistic agent, 6-15 parts of an acrylate fiber, 4-10 parts of a heat-resistant filler and 1-5 parts of modified micro-silicon powder, wherein the heat-resistant filler is the mixture composed of calcium carbonate, lignocelluloses and magnesium silicide according to the weight ratio of 3-12:3-8:1-2. The MPP pipe disclosed by the invention has better flame retardancy, heat resistance, smoke inhibition performance, stability, oxidation aging resistance and the like, the strength is high, and the heat-resistant filler is adopted, the heat resistance and the processing flowing property of the MPP pipe can be effectively improved, the surface glossiness is reduced, the forming performance is good, the processing performance is good, and the use value is high.

The present invention relates to a magnesium salt whiskers reinforced fire-resisting polypropylene composite. Its composition includes polypropylene, magnesium salt whiskers, fire-retardant and bromobiphenylate, high-effective fire-retarding synergist Sb2O3, PP graft compatilizer, antioxidant and other adjuvant. It is characterized by that the whiskers reinforced fire-retarding smoke-inhibitor is added, and its preparation method includes the following steps: except for magnesium salt whiskers placing all the other components into high-speed mixing machine, high-speed mixing them for 2-3 min, adding magnesium salt whickers, low-speed mixing them for about 1 min, discharging material, extruding by using twin screw extruder and granulating so as to obtain the invented product. Its extruding temp. is 170-240 deg.C, and its screw rod rotating speed is 180-600 rpm. Said invention also provides its application range and field.

The invention discloses an antibacterial mildew-resistant corrosion-resistant flame-resistant integrated nanometer functional paint, and preparation method and applications thereof. The antibacterialmildew-resistant corrosion-resistant flame-resistant integrated nanometer functional paint is mainly composed of a corrosion-resistant flame-resistant epoxy priming paint and an antibacterial mildew-resistant wear-resistant polyurethane finish paint. According to the preparation method, an intumescent flame retardant and graphene are added into the epoxy priming paint as flame retardation auxiliary agents; the paint flame resistance is improved greatly through the cooperative effect of the nanometer material and the intumescent flame retardant; nanometer silver antiseptic and hyperbranched polyethylene imide quaternary ammonium salt nanometer particles are added into the polyurethane finish paint as antibacterial auxiliary agents, and the paint antibacterial mildew-resistant performance isimproved through the cooperative effect of the nanometer silver antiseptic and the hyperbranched polyethylene imide quaternary ammonium salt nanometer particles. The reasonable combination of the priming paint with the finish paint is capable of improving the paint corrosion resistance further. The antibacterial mildew-resistant corrosion-resistant flame-resistant integrated nanometer functionalpaint possesses the antibacterial performance, the mildew resistance, the flame resistance, the corrosion resistance, and the wear resistance, is wide in application range, is simple in preparation method, is convenient in operation, and is convenient for large scale applications.

The invention discloses a multifunctional wood inflaming retarding agent and a method for preparing smoke suppressing and inflaming retarding pinus sylvestris solid wood by utilizing of the multifunctional wood inflaming retarding agent, and relates to the multifunctional wood inflaming retarding agent capable of antiflaming, suppressing smoke and preventing running off and a technique for processing the pinus sylvestris solid wood by utilizing the antiflaming and smoke suppressing properties of the multifunctional wood inflaming retarding agent. To solve the problems that the pinus sylvestris solid wood is rich in grease and can not be immersed easily, the flame retardation property of an existing wood inflaming retarding agent is single, and antiflaming components are easy to run off, the wood inflaming retarding agent comprises, by weight, 22-56 parts of phosphoric acid amidinourea, 15-25 parts of boric acid, 24-56 parts of water-solubility ammonium polyphosphate, 1-5 parts of ammonium molybdate and 20-45 parts of silica sol. The preparation method of the inflaming retarding and smoke suppressing pinus sylvestris solid wood comprises the following steps. Firstly, the microwave process is carried out on the dried pinus sylvestris solid wood. Secondly, the pinus sylvestris solid wood is placed in inflaming retarding liquid to be pressurized and immersed in a vacuum mode. The dried inflaming retarding and smoke suppressing pinus sylvestris solid wood has a good smoke suppressing property, the smoke suppressing effect and anti-running-off property are obvious.

The invention discloses a high heat-resistant anti-aging CPVC power cable protection tube. The tube comprises the following raw materials, in parts by weight: 450-550 parts of CPVC, 200-300 parts of PVC, 150-200 parts of calcium powder, 30-50 parts of a toughening agent, 3-15 parts of nitrile rubber, 20-30 parts of a stabilizer, 10-20 parts of a flame retardant, 1-5 parts of stearic acid, and 12-18 parts of paraffin. The high heat-resistance anti-aging CPVC power cable protection tube provided by the invention has a temperature resistant to heat deformation of 98 DEG C or more, has excellent high-temperature resistance, and can adapt to high-temperature harsh environments; the flame retardant performance reaches a FV-0 level; the tube has the characteristics of good flexibility, uneasy breakage and aging, long service life, no radiation pollution and a light weight; and in addition, a preparation method provided by the invention is simple and controllable, and the production is easy tooperate.

The invention discloses a preparation method of a moisture-proof and flame-retardant plywood. The method includes: drying a set of veneers or a set of sliced veneers, then coating adjacent veneers orsliced veneers with an adhesive to prepare a slab, conducting cold pressing and hot pressing on the slab, and then performing shearing, edge sawing, surface finishing, sanding and polishing, and thenspraying primer and top coat. The product has bonding strength of 50-70MPa and a mould inhibition rate of 78.4-83.6%, accords with the GB50222 "fire prevention code for interior decoration design of buildings", meets the requirements of B1-C flame retardant grade, the inner flame tip height in 20s is 17-84mm, and the paint film hardness is 2-4H.

The invention relates to a high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board and a preparation method thereof and belongs to the technical field of a building fire-proof material. The high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board comprises the following components in parts by mass: 100 parts of phenolic resin, 10 to 20 parts of expansive fire retardant, 5 to 10 parts of liquid fire retardant, 5 to 8 parts of coal ash, 1 to 2 parts of tiny silicon powder, 1 to 2 parts of magnesium hydroxide, 5 to 7 parts of foaming agent, 5 to 7 parts of foam stabilizer and 20 to 30 parts of curing agent. The preparation method of the high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board comprises the following steps of 1) preparing a mixed slurry, i.e. (1) optionally selecting a formula, (2) mixing the phenolic resin and the liquid fire retardant, (3) mixing the expansive fire retardant, the hollow coal ash, the magnesium hydroxide and the tiny silicon powder, and adding the mixture into the mixed liquid, (4) adding the foaming agent and the foam stabilizer, and uniformly stirring the materials, and (5) adding the curing agent, stirring the materials, and filling the mixture into a die; and 2) molding and curing to obtain the fire-proof heat-preserving board. The fire-proof heat-preserving board has the advantages of convenience in construction, good fire resistance, low water absorption per volume, capability of meeting the requirements of high smoke suppression and high oxygen index of inner and outer wall heat-preserving boards, and the like.

The invention discloses a composite flame retardant which is used as a flame retardant product and can be directly used as an additive to be added into ingredients of a product with a flame retardant requirement. The composite flame retardant comprises the following components in parts by weight: 5-30 parts of polydimethylsiloxane, 5-30 parts of silicate ester resin, 2-12 parts of stearate, 10-40 parts of zinc borate, 5-20 parts of calcium carbonate, 20-40 parts of aluminum hydroxide, 20-40 parts of magnesium hydroxide, 5-15 parts of talcum powder and 10-20 parts of sodium silicate. The composite flame retardant is easy to obtain raw materials, simple in preparation process, excellent in flame retardance, free of poisonous gas, good in smoke suppression, low in consumption and capable of meeting the general flame retardant requirement and also improving the mechanical property and compatibility of a substrate to a certain extent.