复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (7): 93-98.DOI: 10.19936/j.cnki.2096-8000.20210728.014

• 应用研究 • 上一篇    下一篇

环氧树脂交联结构对固化动力学的影响

张代军1,2, 邢宇1,2, 包建文2,3,4, 钟翔屿2,3,4, 刘巍5   

  1. 1.中国航发北京航空材料研究院,北京100095;
    2.先进复合材料国防科技重点实验室,北京100095;
    3.航空工业复合材料技术中心,北京101300;
    4.中航复合材料有限责任公司,北京101300;
    5.北京服装学院 材料科学与工程学院,北京100029
  • 收稿日期:2021-01-29 出版日期:2021-07-28 发布日期:2021-08-04
  • 作者简介:张代军(1985-),男,高级工程师,博士,主要从事树脂基复合材料相关方面的研究,15810534483@139.com。

The effect of cross-linked structure of epoxy resin on curing kinetics

ZHANG Dai-jun1,2, XING Yu1,2, BAO Jian-wen2,3,4, ZHONG Xiang-yu2,3,4, LIU Wei5   

  1. 1. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
    2. National Key Laboratory of Advanced Composites, Beijing 100095, China;
    3. AVIC Composite Center, Beijing 101300, China;
    4. AVIC Composites Corporation Ltd., Beijing 101300, China;
    5. School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
  • Received:2021-01-29 Online:2021-07-28 Published:2021-08-04

摘要: 在环氧树脂E54中引入不同比例的三官能团间氨基苯酚环氧树脂S500M进行物理共混,采用DDS固化剂,制备不同交联结构的环氧树脂。利用非等温DSC法对环氧树脂固化过程进行分析,根据固化反应热绘制固化度与温度曲线,通过Kissinger和Crane方程计算树脂固化反应活化能和动力学参数。结果表明,随着树脂交联密度的提高,固化反应的开始温度、峰值温度、终止温度均发生前移,固化时间缩短,固化反应活化能降低,但频率因子和反应级数基本不变。

关键词: 交联结构, 环氧树脂, 固化动力学, 复合材料

Abstract: The epoxy resin E54 was added with different proportions of the trifunctional meta-aminophenol epoxy resin S500M and was used to prepare the epoxy resins which has different cross-linked structures with the DDS curing agent. The non-isothermal DSC method was used to analyze the curing process of epoxy resin, and the curing degree versus temperature curve was drawn according to the curing reaction heat. The activation energy and kinetic parameters of the epoxy resin systems were obtained by using Kissinger and Crane equations. With the increase of crosslinking density, the results showed that the starting temperature, peak temperature and termination temperature of the curing reaction moved forward, the curing time was shortened, and the activation energy of curing reaction was decreased, but the frequency factor and reaction order were basically unchanged.

Key words: cross-linking structures, epoxy resin, curing kinetics, composites

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