高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (11): 1837.

• 论文 • 上一篇    下一篇

含柔性间隔基的扩链脲潜伏性固化、增韧环氧树脂性能研究

张保龙, 张会旗, 由英才, 杜宗杰, 丁培元, 翟华春, 黄吉甫   

  1. 南开大学化学系, 吸附分离功能高分子材料国家重点实验室, 天津, 300071
  • 收稿日期:1997-09-26 出版日期:1998-11-24 发布日期:1998-11-24
  • 通讯作者: 张会旗, 现在天津大学化工学院.
  • 作者简介:张保龙,男,51岁,副教授.
  • 基金资助:

    天津市自然科学基金(批准号:983603111)资助课题.

Use of Chain-Extended Ureas as Latent Curing Agents and Toughening Modifiers for Epoxy Resin

ZHANG Bao-Long, ZHANG Hui-Qi, YOU Ying-Cai, DU Zong-Jie, DING Pei-Yuan, ZHAI Hua-Chun, HUANG Ji-Fu   

  1. Department of Chemistry, The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Nankai University, Tianjin, 300071
  • Received:1997-09-26 Online:1998-11-24 Published:1998-11-24

PDF (PC)

被引次数

36

摘要： 合成了含聚乙二醇柔性问隔基的扩链脲(Ui),并对其与环氧树/二苄胺混合体系的反应活性、贮存性能、动态力学性能及抗冲击性能进行了研究.结果表明:环氧树脂/扩链脲/二苄胺混合体系在323K下贮存期可达40h,其固化物抗冲击强度最高可达55.8kJ/m2,较环氧树脂/小分子取代脲(U0)/二苄胺混合体系提高近5倍.

关键词: 环氧树脂, 扩链脲, 聚乙二醇, 潜伏性固化剂, 增韧剂

Abstract: Aseries of chain-extended ureas(Ui) containing polyethylene glycol (PEG) flexible spacers were synthesized and the reactive activity, the storage property, dynamic mechanical behavior and impact strength of the epoxy resin/Ui/ dibenzyl amine(DBA) system were studied. The results showed that the storage life of the epoxy resin/Ui/DBAsystem could be delayed to 40 h at 323 Kand the impact strength of the epoxy resin/chain-extended urea containing PEGspacer with molecular weight 600/DBAsystem was about five times higher than that of the epoxy resin/urea without PEGspacer(UO)/DBAsystem.

Key words: Epoxy resin, Chain extended urea, Polyethylene glycol, Latent curing agent, Toughening modifier

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