Fire retardant mechanism of aliphatic bromine compounds in polystyrene and polypropylene

This paper deals with the effective flame retardance of polystyrene and polypropylene with aliphatic bromine compounds. By studying glow wire and UL94 V2 performance of aliphatic hexabromocyclododecane in polystyrene and the mixed aliphatic/aromatic compound tetrabromobisphenol A bis (2,3-dibromopro...

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Bibliographic Details
Published in:Polymer degradation and stability 2002, Vol.77 (2), p.325-331
Main Authors: Kaspersma, Jelle, Doumen, Cindy, Munro, Sheila, Prins, Anne-Marie
Format: Article
Language:English
Subjects:
Aliphatic bromine
Applied sciences
Chain scission
Compounding ingredients
Exact sciences and technology
Fireproof agents
FR mechanism
Glow wire test
HBCD
Non Hal
Polymer industry, paints, wood
Technology of polymers
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Summary:This paper deals with the effective flame retardance of polystyrene and polypropylene with aliphatic bromine compounds. By studying glow wire and UL94 V2 performance of aliphatic hexabromocyclododecane in polystyrene and the mixed aliphatic/aromatic compound tetrabromobisphenol A bis (2,3-dibromopropyl 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 compounds to be so effective. The effectiveness of a synergist depends on the use ratio and can be negative depending on the FR test. Also the effect of neutral fillers like talc is studied and it is shown that particle size has the strongest effect on the FR test which depends most on polymer flow. The effect of polymer molecular weight is in line with the mechanisms involved.
ISSN:0141-3910
1873-2321
DOI:10.1016/S0141-3910(02)00067-8