磷腈改性聚氨酯热解燃烧特性的研究  

Study on Some Decomposition and Combustion Properties of Polyurethane Modified by Phosphazene

作　　者：胡源[1,2] 河村敏行[1,2] 桂宙[1,2] 范维澄 小关直子[1,2] 阿久津好明 田村昌三 王清安[1,2] 

机构地区：[1]中国科学技术大学 [2]日本东京大学

出　　处：《中国科学技术大学学报》1998年第3期298-304,共7页JUSTC

摘　　要：利用磷腈化合物改性聚氨酯，通过ＥＳＲ自旋捕捉技术和裂解色质仪观察其燃烧特性，对聚氨酯燃烧后长寿命自由基和热分解产物进行了研究．实验结果表明，含氯的六氯环三磷腈可抑制燃烧过程中长寿命自由基的生成，同时将磷腈化合物加入到聚氨酯体系中，在中等温度下可促进它的热分解．Combustion and decomposition properties in polyurethane modified by phosphazene compounds were investigated by using the electron spin resonance(ESR) spintrapping technique and pyrolyzerGCMS. The long lived gas phase radicals in combustion and decomosition products of polyurethane were studied. It is shown that the concentration of radicals in combustion is reduced by adding hexachlorotriphosphazene containing chlorine, and that decomposition in polyurethane is accelerated by adding phosphazene compounds at a moderate temperature.

关 键 词：磷腈化合物 聚氨酯 自由基 热分解 燃烧 

分 类 号：O633.4[理学—高分子化学]