Aryl phosphate–aryl phosphate synergy in flame-retarded bisphenol A polycarbonate/acrylonitrile-butadiene-styrene
作者： Marie-Claire Despinasse , Bernhard Schartel
DOI: 10.1016/J.TCA.2013.04.006
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摘要: Abstract The pyrolysis and fire performance of bisphenol A polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) flame-retarded by a mixture two aryl bisphosphates were investigated thermogravimetry-coupled with FTIR, oxygen index (LOI), UL 94 cone calorimeter. Both flame retardants, bis (diphenyl phosphate) BDP hydroquinone HDP, show gas-phase condensed-phase actions. When mixed together at different ratios, synergy is observed in terms residues as well effective heat combustion (THE/ML). synergisms quantified confirmed mathematically the evaluation synergistic effect (SE). All LOI values for blends are between 29% 32%, opposed to 23% PC/ABS, UL94 testing results V-0 1.6 mm instead HB. Investigations on binary system BDP + HDP reveal that HDP interact each other, yielding stable intermediate products which proposed increase thermal stability PC/ABS + BDP/HDP blends. Oligomeric phosphate esters presumed form via transesterification.
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