Fire retardant mechanism of aliphatic bromine compounds in polystyrene and polypropylene

摘要

This paper deals with the effective flame retadance of polystyrene and polypropylene with aliphatic bromine compounds. By studying glow wire and UL94 V2 performance of aliphatic hexabromocyclododecaen in polystyrene and the mixed aliphatic/aro- matic compound tetrabromobisphenol A bis (2,3-dibromoropyl ether) in polypropylene with and without synergists like antimony trioxide and dicumene, it is made plausible that the combination of chain scission and flame poisoning mechanisms causes these compound to be so effective.