应用化学

• 研究论文 • 上一篇    下一篇

含磷聚酰亚胺纤维的制备及其力学与阻燃性能

丁祥1,2,邱雪鹏1,马晓野1,郭海泉1,高连勋1*   

  1. (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;
    2.中国科学院大学 北京 100039)
  • 收稿日期:2013-08-25 修回日期:2013-10-30 出版日期:2014-06-10 发布日期:2014-06-10
  • 通讯作者: 高连勋,研究员; Tel:0431-85262203; E-mail:lxgao@ciac.ac.cn; 研究方向:聚酰亚胺和有机合成化学
  • 基金资助:
    国家自然科学基金(51373164)资助项目

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

DING Xiang1,2, QIU Xuepeng1, MA Xiaoye1, GUO Haiquan1, GAO Lianxun1*   

  1. (1.State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of
    Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
    2.University of Chinese Academy of Sciences,Beijing 100039,China)
  • Received:2013-08-25 Revised:2013-10-30 Published:2014-06-10 Online:2014-06-10

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

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