高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (3): 511.

• 研究简报 • 上一篇    

物理老化对聚苯基单醚喹噁啉薄膜银纹化的影响

刘万军1, 沈静姝2, 王茁3, 卢凤才2, 徐懋2   

  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. 中国科学院化学研究所分子科学中心, 高分子物理与化学国家重点实验室, 北京 100080;
    3. 吉林大学南岭校区应用化学系, 长春 130022
  • 收稿日期:2000-04-05 出版日期:2001-03-24 发布日期:2001-03-24
  • 通讯作者: 刘万军(1969年出生),男,博士,从事聚合物凝聚态结构与形变和断裂研究.
  • 基金资助:

    国家科技部基础性研究重大关键项目(批准号:9511);高分子物理开放实验室基金资助课题

The Effects of Physical Ageing on Crazing of Polyphenylquinoxaline Films

LIU Wan-Jun1, SHEN Jing-Shu2, WANG Zhuo3, LU Feng-Cai2, XU Mao2   

  1. 1. State Key Laboratory of Polymer Physicsand Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. State Key Laboratory of Polymer Physicsand Chemistry, the Center of Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
    3. Department of Applied Chemistry, Nanling Camp us, Jilin University, Changchun 130022, China
  • Received:2000-04-05 Online:2001-03-24 Published:2001-03-24

PDF (PC)

被引次数

3

关键词: 物理老化, 聚苯基单醚喹噁啉, 银纹化

Abstract: The effects of physical ageing on the crazing of polyphenylquinoxaline(PPQ-E) films were studied. The DSCendothermic peak at the glass transition region of the samples was interpreted in terms of the cohesional entanglement theory. The free volume cavity size and free volume intensity of the samples were characterized by positron annihilation life spectroscopy. The difference in free volume cavity size and free volume intensity between two samples reflect the strength and density of cohensional entanglement point. The critical strain for craze initiation and craze stability depended on physical ageing of the samples. The relationships between physical ageing and crazing were interpreted initially.

Key words: Physical ageing, Polyphenylquinoxaline, Crazing

中图分类号: 

TrendMD: