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CAS No. 88497-56-7
Brominated polystyrene (BPS for short) is a brominated organic flame retardant with high flame retardancy< /a>, thermal stability and light stability and other good mechanical, physical and chemical properties, widely used in PA6, PA66, PBT, PET and other engineering plastics.
Brominated polystyrene is mainly used in thermoplastic resins such as PA, PBT, PET, etc., and needs to be used in conjunction with antimony compounds. In the case of flame retardant polyester, the addition amount of 10% (reinforced) to 17% (non-reinforced) can be assigned to the material UL94V-O grade (0.8mm). Material UL94V-O grade (0.8mm).
Brominated polystyrene is made of polystyrene by bromination. It is mainly used as a flame retardant in engineering plastics. Since polystyrene (PS) is an engineering plastic, it determines the BPS Good compatibility with engineering plastics. It has the least impact on the mechanical properties of the material, and can guarantee more than 90% of the mechanical properties. BPS is a macromolecular flame retardant with good compatibility with the substrate, no precipitation, no migration, no frost on the surface and strong antistatic ability.
Brominated polystyrene is white or light yellow powder or granules with a bromine content of about 68%. The thermal decomposition temperature is higher than 330 °C, and it has the advantages of large molecular weight, good thermal stability, good dispersibility and compatibility in high polymers, easy processing, and no frost.
Brominated polystyrene is named as brominated polystyrene and polybrominated styrene according to its synthetic route. It can be seen from the naming that brominated polystyrene is completed by brominating polystyrene. ; Polybrominated styrene is firstly carried out ethylenic protection of styrene, and then brominated, and then the ethylenic bond is recovered to synthesize brominated styrene, and the polymerization is completed again. From whether a solvent is used in the synthesis process, it can be divided into solvent method and non-solvent method. Because the solvent method consumes less bromine, people usually use the solvent method for synthesis.
Brominated polystyrene (BPS) is an internationally recognized environmentally friendly flame retardant, does not contain polybrominated diphenyl ethers and polybrominated biphenyls, and complies with ROHS standards. It has the advantages of good compatibility with materials, no precipitation, no frost, good electrical properties, little influence on the mechanical properties of materials, and low price.
