高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (8): 877.

• 研究论文 • 上一篇    下一篇

端噁唑啉聚醚对环氧树脂的固化与增韧作用的研究

王玉民, 潘恩黎, 刘国智   

  1. 南京化工学院化工系
  • 收稿日期:1989-05-20 出版日期:1990-08-24 发布日期:1990-08-24
  • 通讯作者: 潘恩黎
  • 基金资助:

    江苏省科学技术委员会基金

A Study on the Curing and Toughening Effect of Terminal 2-Qxazoline Polyether on Epoxy Resin

Wang Yumin, Pan Enli, Liu Guozhi   

  1. Nanjing Institute of Chemical Technology, Nanjing
  • Received:1989-05-20 Online:1990-08-24 Published:1990-08-24

摘要: 用IR、DSC等分析方法研究了端2-噁唑啉聚环氧丙烷(活性聚醚)与环氧树脂的固化反应,对固化机理作了讨论。并考察了不同分子量活性聚醚对环氧树脂的增韧作用。结果表明,此活性聚醚对环氧树脂增韧效果明显,固化树脂综合性能较好。

关键词: 2-噁唑啉聚醚, 环氧树脂, 增韧作用

Abstract: The curing reaction of epoxy resin with 2-oxazoline-terminated poly(propylene oxide) (active polyether) prepared by cyanoethylation and oxazoline. cyclization from hydroxy-terminated polyether is-studied by IR and DSC analysis. The apparent rate constants for different temperatures and apparent activation energy of the curing reaction are evaluated by DSC method. The mechanism of curing reaction is discussed. The physical and mechanical properties of cured epoxy system toughened by the active polyether with different molecular weights is estimated. The results show that via selecting the amount of polyether used and its MW, the cured systems may possess higher fracture toughness, while retaining the valuable properties of the rigid system. The active polyether can be used as a kind of latent-curing and toughening agent for epoxy resin.

Key words: 2-Oxazoline-terminated polyether, Epoxy resin, Toughening effect

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