Mechanisms of thermal degradation of a polyester flame-retarded with antimony oxide/brominated polycarbonate studied by temperature-programmed analytical pyrolysis
作者： Hiroaki Sato , Kiyotaka Kondo , Shin Tsuge , Hajime Ohtani , Nobuyuki Sato
DOI: 10.1016/S0141-3910(97)00259-0
关键词: Substrate (chemistry) 、 Antimony oxide 、 Polycarbonate 、 Chemical engineering 、 Degradation (geology) 、 Polyester 、 Pyrolysis 、 Polymer chemistry 、 Thermal stability 、 Polymer 、 Materials science
摘要: Abstract Thermal degradation of a flame-retarded poly(butylene terephthalate) (FR-PBT) consisting PBT and synergistic flame-retardant system based on brominated polycarbonate (Br-PC) Sb 2 O 3 was studied by means various temperature-programmed analytical pyrolysis techniques such as pyrolysis-mass spectrometry (TPPy-MS), TPPy-atomic emission detection (TPPy-AED) TPPy-gas chromatography (TPPy-GC). During the FR-PBT, phenols were first observed to evolve at temperatures slightly lower than those for flammable product evolution from substrate polymer (PBT), followed HBr over whole range polymer. These processes closely related effects decomposition Br-PC in promote thermal pure Br-PC. Furthermore, flame poisoning SbBr formed through reaction between could also be monitored directly TPPy techniques. On basis data obtained these techniques, FR-PBT flame-retarding mechanisms are discussed.
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