含磷聚酰亚胺纤维的制备及其力学与阻燃性能

doi:10.3724/SP.J.1095.2014.30424

摘要/Abstract

摘要： 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。

关键词: 含磷聚酰亚胺纤维, 热稳定性, 阻燃, 极限氧指数

Abstract: The phosphorus-containing diamine compound, bis(3-aminophenyl)phenyl phosphine oxide(DAPPO), was synthesized with cheap triphenylphosphine oxide and nitro-sulfuric acid. The phosphorus-containing polyimide(PI) fibers were prepared by introducing DAPPO into the polymer backbone of 4,4′-oxydianiline(ODA), pyromellitic dianhydride(PMDA) and 3,3′,4, 4′-biphenyl tertracarboxylic dianhydride(BPDA). The results of thermogravimetric analysis indicate that thermal stability of the PI fibers is obviously enhanced with increasing phosphorus content. When n(DAPPO)：n(ODA) is 7：93, the value of limiting oxygen index of the fiber has reached 43. These powerfully demonstrate that the flame retardant of PI fibers has been significantly enhanced.

Key words: phosphorus-containing polyimide fiber, thermal stability, flame retardant, limiting oxygen index

中图分类号:

O633

丁祥, 邱雪鹏, 马晓野, 郭海泉, 高连勋. 含磷聚酰亚胺纤维的制备及其力学与阻燃性能[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30424.

DING Xiang1,2, QIU Xuepeng1, MA Xiaoye1, GUO Haiquan1, GAO Lianxun1*. Preparation， Mechanical Properties and Flame Retardancy of Phosphorus-containing Polyimide Fibers[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30424.

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