高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (5): 965.

• 研究论文 • 上一篇    下一篇

吸水过程对环氧树脂的动态松弛行为的影响

丁遗福, 李华, 刘墨君, 吴先国, 李善君   

  1. 复旦大学高分子科学系, 聚合物分子工程教育部重点实验室, 上海 200433
  • 收稿日期:2001-02-07 出版日期:2002-05-24 发布日期:2002-05-24
  • 通讯作者: 李善君(1942年出生),男,教授,博士生导师,主要从事热固性树脂结构和性能研究.E-mail:sjli@fudan.edu.cn E-mail:sjli@fudan.edu.cn

The Effect of Water Absorption on the Behavior of Dynamic Relaxation of the Epoxy Resins

DING Yi-Fu, LI Hua, LIU Mo-Jun, WU Xian-Guo, LI Shan-Jun   

  1. Department of Macromolecular Science, Key Laboratory of Molecular Engineering of Polymerof Education Ministry, Fudan University, Shanghai 200433, China
  • Received:2001-02-07 Online:2002-05-24 Published:2002-05-24

摘要: 以酚醛树脂和乙酸、正丁酸和苯乙酸酯化的酚醛树脂固化邻甲酚环氧树脂.应用称重法、示差扫描量热法(DSC)和动态机械分析法(DMA)等手段研究吸水过程对环氧树脂的动态松弛行为的影响.结果表明,吸水过程对酚醛树脂和酯化酚醛树脂固化体系的动态松驰行为有显著的影响,这是由于两种体系中侧基对吸水过程及与水分子的相互作用不同所致.

关键词: 酚醛树脂, 环氧树脂, 吸水性, 动态松弛行为

Abstract: O-Cresol novolac epoxy resins (ECN) were cured with phenol novolac resin (NOV) and three esterified phenol novolac resins.Gravimetric method and DMAwere used to study the effect of water absorption on the dynamic relaxation.Experimental results show that the relaxation behavior is greatly affected by the water absorption, which is affected by the polarity and the flexibility of the side groups.

Key words: Phenol novolac resin, Epoxy resins, Water absorption, Dynamic relaxation

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