| 用DTA研究环氧树脂固化反应动力学 |
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| 引用本文： | 梁舒萍. 用DTA研究环氧树脂固化反应动力学[J]. 热固性树脂, 1998, 13(4): 20-23,29 |
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| 作者姓名： | 梁舒萍 |
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| 作者单位： | 佛山科学技术学院!广东佛山528000 |
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| 摘 要： | 本文用DTA和FIR研究双酚A二缩水甘油醚型环氧树脂与2-乙基-4-甲基咪唑固化反应动力学，探讨了固化反应的机理。结果表明，此固化反应是分步进行的。第一步是加成反应，第二步是催化聚合反应，由此确定适宜采用分段固化工艺。通过DTA曲线推得固化工艺温度，并计算固化反应各步活化能：E1＝36．8kJ．mol-1，E2＝53．gkJ·mol-1。
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| 关 键 词： | DTA 环氧树脂 固化反应 动力学 |
A STUDY OF CURING REACTION KINETICS OF EPOXY RESIN BY DTA |
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| Liang Shoping. A STUDY OF CURING REACTION KINETICS OF EPOXY RESIN BY DTA[J]. Thermosetting Resin, 1998, 13(4): 20-23,29 |
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| Authors: | Liang Shoping |
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| Affiliation: | Foshan Science and Technology Institute Guangdong Foshan 528000 |
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| Abstract: | The curing kinetics of bisphenol A diglycidyl ether type epoxy resin (DGEBA) cured with 2-ethyl-4-methylimidazole (EMI-2, 4) was studied by DTA and FIR in this paper. The mechanism of curing reaction was investigated. The results of DGEBA cured with EMI-2, 4show that the reaction carried on two stages. The first stage was addition, the second stage was catalytic-polymerization. Stage curing technology was suitable for the epoxy curing systems. The curing techmological temperature was inferred by DTA curve, the activation energy of each step of curing reaction were calculated: E1 = 36. 8kJ. mol-1, E2 = 53. 9kJ.mol-1 |
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| Keywords: | Keyword: DTA Epoxy resin Curing reaction kinetics Mechanism |
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