505results about How to "High smoke suppression effect" patented technology

The invention discloses a high tenacity low smoke zero halogen flame retardant polypropylene and a preparation method thereof and the polypropylene comprises the following components according to the parts by weight; 10-90 parts of polypropylene, 10-90 parts of flexibilizer, 100-160 parts of inorganic flame retardant, 2-20 parts of flame-retardant synergist, 2-5 parts of reactive compatibilizer, 0.1-2 parts of antioxidant, 0.5-5 parts of flow modifier, 0.1-5 parts of surface modifier and a defined amount of coloring agent. The low smoke zero halogen flame retardant polypropylene has the advantage of good mechanical properties, good flame resistance (the vertical flame test of the polypropylene passes UL94V-0 level), low smoke density which is not more than 20%, good aging resistance and low cost, and can meet the processing demands for injection and extrusion molding.

The present invention discloses an environmental protection fire retardation type textile printing coating material and a preparation method thereof. According to the present invention, a fire retardation type acrylate is adopted as a main base material to prepare a fire retardation type coating material for textile printing, wherein the prepared fire retardation type coating material self-extinguishes within 5 seconds after leaving fire, and has characteristics of good fire retardation effect, good elasticity, low cost, excellent washing fastness resistance, and excellent color fastness; during a production process and a use process of the product, no formaldehyde is released, an environmental protection characteristic is provided, and the product does not contain heavy metals and alkyl phenol substances, and is an environmentally friendly and green product; and the preparation method has characteristics of easy production process control, high production efficiency and stable system, and is suitable for industrial scale production.

A micro-foaming polystyrene wood-plastic composite material and the preparation method relates to a micro foaming wood-plastic composite material and the preparation method. The present invention solves the problems of poor impact resistance and easy combustion of the current wood-plastic composite material. The present invention is made of wood fiber material, coupling agent, plasticizer, lubricant, polystyrene, foamer, assistant foamer, fire retardants and smoke suppressant according to a weight portion. The preparation method is as follows: first, hot mixing; secondly, cooling and mixing; thirdly, extruding and molding. Then the micro-foaming polystyrene wood-plastic composite material can be made. The micro-foaming polystyrene wood-plastic composite material of the present invention has the advantages of small density, good fire-resistant and smoke-suppression effects, and impact resistance.

The invention discloses a low-smoke halogen-free flame-retardant cable material, and belongs to the field of materials. The low-smoke halogen-free flame-retardant cable material solves the problem that an existing cable material is poor in mechanical property and electrical property. The low-smoke halogen-free flame-retardant cable material is composed of 50-60 parts of high density polyethylene, 20-30 parts of ethylene-ethyl acrylate copolymers, 20-30 parts of methyl vinyl silicone rubber resin, 1-3 parts of magnesium stearate, 2-5 parts of novolac epoxy resin, 15-25 parts of isopropyl phenyl diphenyl phosphate, 1-2 parts of dilauryl thiodipropionate, 10-20 parts of dimellitate, 1-2 parts of antioxidants 1010, 1-1.5 parts of antioxidants CA, 10-20 parts of maleic anhydride grafting ethylene-octylene copolymers, 5-10 parts of polysiloxane, 20-30 parts of nano magnesium hydroxide, 13-18 parts of nano clay, 3-7 parts of zinc oxide, 5-10 parts of polyethylene wax and 3-8 parts of calcium stearate. The low-smoke halogen-free flame-retardant cable material can be widely used as insulation and sheathing materials of various electric wires and cables.

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 discloses a wood additive and making method to solve the problem of low solubility and bad penetrability of boron system compound as wood protective in the water, which is made of 100wt% borate and 0. 1-5wt% composite surface activator. The making method comprises the following steps: 1. blending boric acid and borax evenly to place in the 25-75 deg. c environment to do solid-phased reaction; drying; obtaining the borate; 2. blending the composite surface activator and borate evenly to obtain the wood protective. The invention has the function of preservation, insect protection, termite-resistant, flame-proof and smoke inhibition, which doesn't harm human and animals without influencing the appearance, dynamics and manufacturing property of the wood.

The invention relates to a method for preparing thermostable nano hydrotalcite used in PVC resin, belonging to the technical field of chemical product preparation and application. The method can improve the thermostability and the smoke suppression performance of the PVC resin. The specific method comprises: A. 10-800g of soluble bivalent metal salts M2+Y and Al (NO3) 3.9 H2O are weighed, are dissolved in 0.2-1L of deionized water and are prepared into mixed salt solution, wherein the molar ratio of M2+ / Al3+ is 2-4:1 and the concentration of M2+ is 0.05-1mol / L; 2-370g of NaOH and Na2CO3 are weighed, are dissolved in 0.2-1L of deionized water and are prepared into mixed alkali solution, wherein the molar ratio of NaOH / Na2CO3 is 1-3:1 and the molar ratio of NaOH / M2+ is 1.5-2.5:1; and the two kinds of solution are rapidly mixed in a colloid mill and are violently and cyclically agitated for one minute; B. the obtained slurry is poured into a crystallization kettle, 1-5 percent of modifier is added by weight percent, and the obtained mixture is violently agitated and is crystallized under 70-150 DEG C for 2-24 hours; and C. the crystallized slurry is put in a lyophilizer for being lyophilized for 24-48 hours. The invention has the advantages that the preparation method is simple and feasible and the hydrotalcite can be widely used in the PVC preparation industry.

The invention discloses a flame-retardant type wood-plastic material. The material is prepared from, by weight, 60-70 parts of wood fibers, 11-16 parts of pentaerythritol, 21-28 parts of modified fire retardant, 21-28 parts of modified smoke inhibitor, 17-25 parts of polypropylene, 17-25 parts of high-density polyethylene, 8-13 parts of vermiculite, 5-9 parts of dioctyl phthalate, 6-13 parts of polyethylene glycol monostearate, 12-15 parts of unsaturated polyester resin, 5-9 parts of vinyl trimethoxy silane, 2-5 parts of luffa stems, 2-5 parts of polyethylene wax, 1-3 parts of PE wax, 1-3 parts of magnesia, 1-2 parts of graphite, 1-2 parts of herba taraxaci, 1-2 parts of ligusticum sinense olivers and 0.1-0.3 part of peanut oil. The wood-plastic material has high flame retandance and a good smoke inhabitation effect and does not release toxic and harmful substances at the high temperature, secondary harm to the human body is avoided, the heat insulation property is quite good, scalds to the human body are avoided, the quite good insulating property is achieved, and meanwhile the wood-plastic material is compact in material, good in mechanical performance and quite durable.

The invention relates to a graphene-molybdenum oxide nano flame-retardant composite material. The preparation method comprises the following steps: (1) mixing graphene oxide and ammonium molybdate in a mass ratio of (1.8-8):1; (2) carrying out ball milling on the mixture obtained in the step (1) to obtain a graphene oxide-ammonium molybdate composite; (3) heating the composite obtained in the step (2) to 100-1050 DEG C, keeping the temperature in a nitrogen protective atmosphere, and cooling to obtain a graphene-molybdenum oxide nano composite; (4) putting the graphene-molybdenum oxide nano composite obtained in the step (3) and a polystyrene resin into a torsion rheometer, and banburying, wherein the mass percent of the graphene-molybdenum oxide nano composite is 0.5-10%, and the mass percent of the polystyrene resin is 90-99.5%; and (5) carrying out extrusion granulation on the material obtained in the step (4) to obtain the graphene-molybdenum oxide nano flame-retardant composite material. The graphene in the composite material has favorable barrier actions; and the molybdenum oxide has the synergistic actions of flame retardancy and smoke inhibition, and can obtain favorable flame retardancy and mechanical properties when being slightly added.