Antimony trioxide Nylon plastic rubber flame retardant Antimony trioxide

Antimony trioxide is a widely used flame retardant suitable to being used for polyethylene, polystyrene, polyvinyl chloride,polyester, epoxy resin, polyurethane and other plastics. However, it has low flame retardant effect when being used alone. Instead it has good synergistic effect when being used in combination with phosphates, chlorine-containing compounds (such as chlorinated paraffins, PCBs, perchloro-glutar-cyclodecane etc.), bromine-containing compounds (such as Hexabromobiphenyl, Hexabromobenzene) with the flame retardant performance being improved significantly. Combining of antimony trioxide with chloride or bromide can result in antimony trichloride or antimony bromide which is reactive and volatile substances which can promote the halogen movement and generation of carbides in its solid form as well as capturing free radicals in its gas form. These reactions can all contribute to flame retardancy. It is always combined with zinc oxide, sodium hydroxide, etc. to be used as brominated synergist flame retardant synergist for being applied to plastic fire prevention system. Antimony trioxide can also be used in the manufacture of antimony potassium tartrate, pigments, porcelain enamels, dyes and other media. It can also be used as a catalyst for polyester poly-condensation.

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