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Flame retardancy of polypropylene and impact polystyrene: Phosphonium bromide/ammonium polyphosphate system
Author(s) -
Granzow A.,
Savides C.
Publication year - 1980
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1980.070251006
Subject(s) - ammonium polyphosphate , polypropylene , fire retardant , polyphosphate , char , polystyrene , phosphonium , ammonium bromide , ammonium , materials science , polymer chemistry , bromide , yield (engineering) , chemical engineering , chemistry , organic chemistry , phosphate , composite material , polymer , pulmonary surfactant , pyrolysis , engineering
The individual and the combined effects of the phosphonium salt Cyagard RF‐1 and ammonium polyphosphate on the oxygen index of polypropylene and high‐impact polystyrene have been studied. The synergistic action of the two flame retardant components is evaluated quantitatively, and a correlation between char yield and synergism is discussed. The chars are characterized in terms of their elemental composition.