32results about How to "Synergistic flame retardant effect" patented technology

The invention belongs to the field of materials and discloses a waterproof core-shell structure flame retardant and application of the flame retardant to preparation of a polyurethane composite. The flame retardant forms a core-shell structure by taking ammonium polyphosphate as a capsule core and taking a copolymer of melamine formaldehyde prepolymer and multiamino polyether as a capsule wall material. Since a shell of the system is hydrophobic resin, water resistance is highly improved as compared with that uncoated flame retardant particles, loss rate of ammonium polyphosphate particles sealed with filter paper reaches 98.0%, loss rate of the prepared waterproof flame retardant particles under the same conditions is lower than 8.50%, and the polyurethane composite prepared from the waterproof core-shell structure flame retardant has good flame retardant effect and can still keep efficient flame retardance under the condition of long-time water soaking.

The invention provides a non-halogen flame retardant hard polyurethane foam material and a preparation method thereof. The material is composed of a component A and a component B, and the weight ratio of the component A to the component B is 1:(1-1.5), wherein the component A comprises, by weight, 6-20 parts of phenolic resin, 60-80 parts of polyether polyol, 5-10 parts of expansible graphite, 1-4 parts of catalysts, 16-30 parts of compounded flame retardant, 1-3 parts of polysiloxane foam stabilizers and 15-30 parts of foaming agent, the component B is isocyanate, and the compounded flame retardant is made of magnesium hydrate, water glass, an silane coupling agent and nano montmorillonite. The foam material improves the flame retardant property, lowers the influence of the flame retardant on the mechanical property of the foam material and further improves the foaming property.

The invention relates to the technical field of plastic modification processing, in particular to halogen-free flame-retardant synergistic functional masterbatch special for polyphenyl ether modification and a preparation method thereof. According to the functional masterbatch, multiply composited coated red phosphorus is used as a phosphorus flame retardant; and the functional masterbatch is prepared from the following components in percentage by mass: 70.0 wt.%-80.0 wt.% of the multiply composited coated red phosphorus, 3.0 wt.%-5.0 wt.% of organic phosphate, 17.0 wt.%-25.0 wt.% of an ethylene-methyl acrylate copolymer, 0.5 wt.%-1.0 wt.% of a dispersing agent and 0.3 wt.%-0.5 wt.% of a lubricating agent. Compared with the traditional flame-retardant functional masterbatch, the functionalmasterbatch prepared by the method has the advantages that thermal stability and water resistance of red phosphorus are remarkably enhanced, the activity of red phosphorus and the corrosion of red phosphorus to a base material are reduced, and the compatibility with a resin matrix is improved, so that the flame-retardant effect of red phosphorus to polyphenyl ether is more effectively improved.

The invention relates to a tetra(0-isopropyl-phenylphosphinyl)glycoluril (TIPRPG) flame retardant composition. The flame retardant composition is prepared from tetra(0-isopropyl-phenylphosphinyl)glycoluril and any one or two or three of melamine cyanurate (MCA), melamine polyphosphate (MPP) and diethyl aluminum phosphinate (1240) through compounding according to any weight ratio and uniformly mixing, wherein the weight fraction of TIPRPG in the flame retardant composition is greater than 0. The flame retardant composition disclosed by the invention has the advantages that multiple elements are synergic, the material compatibility is good, the flame retardance is high, the flame retardant composition is halogen-free and environment-friendly, the application cost can be reduced and the like, so that the flame retardant composition can be applied to flame retardants of polyester, polyamide and the like.

The invention relates to the technical field of plastic modification processing and in particular to a special thermoplastic polyurethane modification flame-retardant synergetic functional master batch and a preparation method thereof. The functional master batch adopts multiple composite coated ethylene di(tetrabromo phthalic diamide) as main body flame retardant, and comprises the following components in percentage by mass: 60.0-75.0wt.% of multiple composite coated ethylene di(tetrabromo phthalic diamide), 10.0-25.0wt.% of zinc phosphate, 9.0-13.0wt.% of thermoplastic polyurethane, 1.0-2.0wt.% of styrene-acrylonitrile copolymer coated polytetrafluoroethylene, 0.5-1.0wt.% of a dispersant and 0.3-0.5wt.% of a lubricant. Compared with a conventional flame-retardant functional master batch,the functional master batch disclosed by the invention is capable of remarkably improving the thermal stability of brominated flame retardant, a material yellowing phenomenon in a thermal mechanicalprocessing process can be effectively reduced, and the flame retardant effect of domestic brominated flame retardant on the thermoplastic polyurethane can be improved.

The invention relates to a triazine triphenyl phosphinic acid isopropyl ester flame retardant composition and an application method thereof. The flame retardant composition is prepared by compounding and uniformly mixing any two, three or four of melamine cyanurate (MCA), melamine pyrophosphate (MPP), 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and pentaerythritol methyl silicate (PEMS) with triazine triphenyl phosphinic acid isopropyl ester (TTPI) at any proportion, wherein the weight part of the TTPI is greater than zero. The flame retardant composition provided by the invention has the advantages of multielement synergic effect, good flame retardancy, good compatibility with materials, low cost, zero halogen, environmental protection and the like, can be used as a flame retardant for polyester PET, polyester PBT, polyurethane, polypropylene, epoxy resin and other materials, and has excellent application and popularization prospects.

The invention relates to the technical field of plastic modification processing, in particular to a polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch, and a preparation method thereof. According to the polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch, a multi-composite coatedtetrabromo bisphenol A carbonate oligomer is used as a main body flame retardant; the polycarbonate and polycarbonate alloy modification special flame-retardant synergistic functional master batch comprises the following components in percentage by mass : 55.0-70.0wt% of the multi-composite coated tetrabromo bisphenol A carbonate oligomer, 15.0-30.0wt% of sodium citrate, 10.0- 14.0wt% of ethylene-glycidyl acrylate copolymer, 0.0-4.0wt% of an aliphatic copolyester, 0.0-0.5wt% of a hyperbranched polyester, 0.5-1.0wt% of a dispersant and 0.3-0.5wt% of a lubricant. Compared with a traditional plastic flame-retardant functional master batch, the flame-retardant synergistic functional master batch disclosed by the invention has the advantages that the thermal stability and the flow dispersity ofthree above domestic brominated flame retardants are improved,so that the flame-retardant effect is improved; the flame retardant effect which is the same as that of the traditional flame retardant functional master batch can be obtained at a less master batch addition amount, and the mechanical property loss of flame retardant compounds of modified polycarbonate and polycarbonate alloy thereof can be effectively reduced.

The invention relates to the technical field of modification and processing of plastics, in particular to special halogen-free flame-retardant synergistic masterbatch for modification of polycarbonateresin and a preparation method of the halogen-free flame-retardant synergistic masterbatch. Multiple-compounded coated potassium aluminum 3-benzenesulfonylbenzenesulfonate is adopted as an inorganicflame retardant, and the halogen-free flame-retardant synergistic masterbatch comprises the compositions: in percent by mass, 10.0-15.0% of multiple-compounded coated potassium aluminum 3-benzenesulfonylbenzenesulfonate, 75.0-80.0% of methyl methacrylate-butadiene-styrene terpolymer (MBS), 3.0-5.0% of polyphenylmethylsiloxane, 2.0-3.0% of organic phosphate, 2.0-3.0% of styrene-acrylonitrile copolymer-coated polytetrafluoroethylene and 0.3-0.5% of a lubricant. When the prepared functional masterbatch is compared with traditional flame-retardant functional masterbatch, the heat resistance and thermal stability of potassium aluminum 3-benzenesulfonylbenzenesulfonate are improved significantly, benzenesulfonic acid functional groups for development of flame retardancy of potassium aluminum 3-benzenesulfonylbenzenesulfonate is protected effectively, and potassium aluminum 3-benzenesulfonylbenzenesulfonate is adaptive to a high processing temperature of polycarbonate resin, so that the flameretardant effect of potassium aluminum 3-benzenesulfonylbenzenesulfonate on the polycarbonate resin is improved more effectively.

The invention discloses a high-strength wear-resistance ceramic-plastic gear. The high-strength wear-resistance ceramic-plastic gear is prepared from materials including modified polyether-ether-ketone, ceramic fiber, polyformaldehyde, polyamide, lanthanum dodecoxyborate, glycol, thermotropic liquid crystal polyester, polyethylene terephthalate, nanometer aluminum oxide, 2, 6-tert-butyl-4-methylphenol, tri-octyl ester, diisononyl phthalate, polyborosiloxane, ammonium polyphosphate and 4'-methoxyacetoacetanilide, wherein the modified polyether-ether-ketone and the ceramic fiber interact to endow the high-strength wear-resistance ceramic-plastic gear with plastic and ceramic properties; the lanthanum dodecoxyborate can form a protective membrane on the surface to effective reduce friction and wearing; the glycol, the nanometer aluminum oxide and the polyethylene terephthalate synergize to improve the chemical properties of heat resistance and chemical resistance as well as impact strength and wear resistance; the polyborosiloxane and the ammonium polyphosphate can promote each other to form a silicon-containing carbonized protective layer to achieve synergistic flame-retardant effects.