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材料研究学报  2007, Vol. 21 Issue (5): 487-487    
  论文 本期目录 | 过刊浏览 |
热氧稳定化过程中聚丙烯腈纤维序态结构的变化
刘杰;阳武
引用本文:

刘杰; 阳武 . 热氧稳定化过程中聚丙烯腈纤维序态结构的变化[J]. 材料研究学报, 2007, 21(5): 487-487.

全文: PDF(580 KB)  
摘要: 研究了聚丙烯腈(PAN)共聚纤 维在连续热氧稳定化过程中序态结构的变化,结果表明: X射线衍射极图所提供的0$^{\circ}$--360$^{\circ}$全角扫描信息,可表征纤维内部晶面法向分子链的分布密度, 描述分子链取向结构的变化程度; 可较全面、动态和直观地解析聚丙烯腈大分子链在热氧稳定化过程中经历的由初期取向结构改善到中、后期大分子链解取向的全过程. 在较低的热氧稳定化温度下, PAN大分子链无序区先发生化学反应,有序度变化不大; 当热处理提供的能量超过有序区环化和改变分子构象所需要的能量时,有序区发生剧烈的热化学反应, 有序度急剧下降.
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收稿日期: 1900-01-01     
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