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Citation: DING Xiang, QIU Xuepeng, MA Xiaoye, GUO Haiquan, GAO Lianxun. Preparation,Mechanical Properties and Flame Retardancy of Phosphorus-containing Polyimide Fibers[J]. Chinese Journal of Applied Chemistry, ;2014, 31(6): 667-671. doi: 10.3724/SP.J.1095.2014.30424 shu

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

DING Xiang ^a,b ,
QIU Xuepeng ^a ,
MA Xiaoye ^a ,
GUO Haiquan ^a ,
GAO Lianxun ^a,,

1.
a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2.
b University of Chinese Academy of Sciences, Beijing 100039, China

Corresponding author: GAO Lianxun,
Received Date: 25 August 2013
Available Online: 11 November 2013
Fund Project: 国家自然科学基金(51373164)资助项目 (51373164)

The phosphorus-containing diamine compound,bis(3-aminophenyl) phenyl phosphine oxide(DAPPO),was synthesized with cheap triphenylphosphine oxide and nitro-sulfuric acid.The phosphoruscontaining 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.
- phosphorus-containing polyimide fiber,
- thermal stability,
- flame retardant,
- limiting oxygen index
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