含磷聚酰亚胺纤维的制备及其力学与阻燃性能

应用化学, 2014, 31(6): 667-671. doi: 10.3724/SP.J.1095.2014.30424

含磷聚酰亚胺纤维的制备及其力学与阻燃性能

丁祥 ^1, , 邱雪鹏 ^2, , 马晓野 ^3, , 郭海泉 ^4, , 高连勋 ^5,

1.中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春 130022;中国科学院大学北京 100039

2.中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春 130022

3.中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春 130022

4.中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春 130022

5.中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春 130022

基金项目: the National Natural Science Foundation of China(51373164) 国家自然科学基金(51373164)

关键词：含磷聚酰亚胺纤维 , 热稳定性 , 阻燃 , 极限氧指数

Preparation, Mechanical Properties and Flame Retardancy of Phosphorus-containing Polyimide Fibers

Keywords： phosphorus-containing polyimide fiber , thermal stability , flame retardant , Iimiting oxygen index

采用廉价的三苯基氧膦和混酸合成了一种含磷二胺单体,二(3-氨基苯基)苯基膦氧(DAPPO).在4,4'-二胺基二苯醚(ODA)、3,3',4,4'-联苯四酸二酐(BPDA)和均苯四酸二酐(PMDA)聚合体系中引入该单体,制备含磷聚酰亚胺纤维.热失重分析(TGA)结果表明,聚酰亚胺纤维的热稳定性随含磷量的增加而明显提高.当n(DAPPO)∶n(ODA)为7∶93时,纤维的极限氧指数达到了43,说明纤维的阻燃性能显著提高.

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