STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)

SUN Zhenhua; 庄宇钢; 李诗春; 丁孟贤; 冯之榴; ZHUANG Yugang; LI Shichun; DING Mengxian; FENG Zhiliu

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STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)

Papers | Updated：2021-06-21

- STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)
- STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)
- 高分子科学（英文版） 1992年10卷第2期页码：145-151
- Affiliations：
  
  1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Academia Sinica , Changchun , Jilin , 130022) FENG Zhiliu
  2.   Changchun Institute of Applied Chemistry
  3.   Academia Sinica
  4.   Jilin
  5.   130022
  6.   Formerly E. T. L. Voong and Voong Tse-Lieu.
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：1992-06-20
- Accepted：
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[1]孙振华,庄宇钢,李诗春,丁孟贤,冯之榴.STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)[J].Chinese Journal of Polymer Science,1992,{4}(02):145-151.

SUN Zhenhua, ZHUANG Yugang, LI Shichun, et al. STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)[J]. 1992, 10(2): 145-151.
[1]孙振华,庄宇钢,李诗春,丁孟贤,冯之榴.STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)[J].Chinese Journal of Polymer Science,1992,{4}(02):145-151. DOI：

SUN Zhenhua, ZHUANG Yugang, LI Shichun, et al. STRUCTURE AND THERMAL MECHANICAL PROPERTIES OF ORIENTED POLYIMIDE (PEI-E)[J]. 1992, 10(2): 145-151. DOI：

摘要

<正> The strain induced crystallization behaviour in polyimide from 1

4-bis （3’

4’- dicarboxyphenoxy）benzene and 4

4’-oxydianiline （PEI-E）has been investigated by WAXD

DSC and FTIR. The results obtained show that crystallization in PEI-E did take place just after tensile yielding. Meanwhile

the effect of strain induced crystallization on the thermomechanical properties was studied by DMA and TMA

the results of which indicate that the crystallization and hot stretching have a certain influence on the dynamic mechanical properties

such as weakening the βrelaxation and decreasing the glass transition temperature. The TMA results confirm the shifting of glass transition temperature to lower temperature region after hot stretching. This phenomenon could be well explained by the effect of residual stress according to Eyring’s theory.

Abstract

The strain induced crystallization behaviour in polyimide from 1

4-bis （3’

4’- dicarboxyphenoxy）benzene and 4

4’-oxydianiline （PEI-E）has been investigated by WAXD

DSC and FTIR. The results obtained show that crystallization in PEI-E did take place just after tensile yielding. Meanwhile

the effect of strain induced crystallization on the thermomechanical properties was studied by DMA and TMA

the results of which indicate that the crystallization and hot stretching have a certain influence on the dynamic mechanical properties

such as weakening the β relaxation and decreasing the glass transition temperature. The TMA results confirm the shifting of glass transition temperature to lower temperature region after hot stretching. This phenomenon could be well explained by the effect of residual stress according to Eyring’s theory.

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