采用三氯氧磷、季戊四醇、对苯二胺和氨基硅油成功制备出新型磷氮硅一体化膨胀型阻燃剂(P-N-Si-IFR),通过极限氧指数、锥形燃烧和热失重测试对比研究了常规磷氮膨胀型阻燃剂(P-N-IFR)与P-N-Si-IFR对PP的阻燃效果.结果表明,含有P-N-IFR的PP阻燃体系的极限氧指数、平均热释放速率和残炭率分别为30.7、240 kW/m2和8.7％,合30％的P-N-Si-IFR的PP阻燃体系的3种参数分别为34.0、94 kW/m2和15.2％,表明P-N-Si-IFR对PP阻燃和提高热稳定性的效果优于P-N-IFR对PP阻燃和增强热稳定性的效果.通过X射线衍射分析了含有两种阻燃剂的PP残炭结构,探讨了P-N-Si-IFR的阻燃机理.
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