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 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.