Abstract Diglycidyl ether of bisphenol A (DGEBA) epoxy resin is cured by two typical diethylene triamine-derived curing agents which have a versamid structure (VDETA) and a butyl ether structure (BDETA) in their molecules respectively, and the exothermic curing kinetics of epoxy/amine is studied by non-isothermal, isothermal DSC and in-situ FT-IR methods. It is found that VDETA hardens epoxy resin more gently with little heat accumulation while BDETA leads to explosive increase of temperature caused by the exothermic reaction, and the dramatic temperature gradient heavily decreases homogeneity of mechanical properties. Kinetic studies reveal that VDETA containing acid amide structure is favorable to reduce the temperature and increase the homogeneity of the mechanical properties.

中文翻译：

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环氧胺放热反应降温的固化动力学研究

摘要 双酚 A 型二缩水甘油醚 (DGEBA) 环氧树脂由两种典型的二亚乙基三胺衍生的固化剂固化，分子中分别具有 Versamid 结构 (VDETA) 和丁基醚结构 (BDETA)，环氧树脂的放热固化动力学通过非等温、等温 DSC 和原位 FT-IR 方法研究 / 胺。结果表明，VDETA对环氧树脂的固化更温和，几乎没有热量积聚，而BDETA导致放热反应引起温度的爆炸性升高，剧烈的温度梯度严重降低了机械性能的均匀性。动力学研究表明，含有酰胺结构的VDETA有利于降低温度和增加力学性能的均匀性。