3-(2-氨基-2-氧乙基)-1-丁基咪唑二氰胺盐对环氧树脂(E-51)的固化工艺

doi:10.7523/j.issn.2095-6134.2020.03.001

中国科学院大学学报 ›› 2020, Vol. 37 ›› Issue (3): 289-294.DOI: 10.7523/j.issn.2095-6134.2020.03.001

• 化学 • 下一篇

3-(2-氨基-2-氧乙基)-1-丁基咪唑二氰胺盐对环氧树脂(E-51)的固化工艺

高升^1,2, 刘龙^2,3, 张延强², 贵大勇¹, 姜智一²

1. 深圳大学化学与环境工程学院, 广东深圳 518055;
2. 中国科学院过程工程研究所中国科学院绿色过程与工程重点实验室, 北京 100190;
3. 中科廊坊过程工程研究院, 河北廊坊 065001

收稿日期:2018-11-28 修回日期:2019-01-10 发布日期:2020-05-15
通讯作者: 刘龙, 贵大勇
基金资助:
国家自然科学基金（21676281，21576270）和广东省自然科学基金（2017A030313322）资助

Curing process of epoxy resin (E-51) and 3-(2-amino-2-oxoethyl)-1-butyl imidazolium dicyanamide

GAO Sheng^1,2, LIU Long^2,3, ZHANG Yanqiang², GUI Dayong¹, JIANG Zhiyi²

1. College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518055, Guangdong, China;
2. Key Laboratory of Green Process and Engineering of CAS, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
3. Zhongke Langfang Institute of Process Engineering, Langfang 065001, Hebei, China

Received:2018-11-28 Revised:2019-01-10 Published:2020-05-15

摘要/Abstract

摘要： 以新型离子液体3-（2-氨基-2-氧乙基）-1-丁基咪唑二氰胺盐（AOBD）作为双酚A型环氧树脂（E-51）的固化剂，深入研究其固化工艺和固化物的性能。结果表明：AOBD可用作E-51的高温固化剂，二者最佳配比为AOBD/E51=10：100，最佳固化温度范围为122~156℃，后固化温度为178℃。固化后E-51浇注体的拉伸强度为30.7 MPa，拉伸模量为3 233.1 MPa，断裂伸长率为1.1%，热分解温度为414.0℃。动态力学分析表明，浇注体的最大损耗因子为0.56，玻璃化转变温度为174.8℃，贮存模量为134.8 MPa，交联密度为3 198.9 mol·m^-3。红外光谱测试表明AOBD的固化反应包括两个阶段，首先-CONH₂在低温下与环氧基团发生开环反应，然后阴离子与环氧基在高温下进一步反应提高交联密度。

关键词: 3-(2-氨基-2-氧乙基)-1-丁基咪唑二氰胺盐, 环氧树脂, 固化剂, 拉伸性能, 固化动力学

Abstract: In this work, ionic liquids of 3-(2-amino-2-oxoethyl)-1-butyl imidazolium dicyanamide (AOBD) was used as curing agent for bisphenol A epoxy resin (E-51). The curing processes and the thermoset properties of AOBD/E-51 were fully characterized. Results show that AOBD is a high temperature curing agent for E-51, the optimum curing ratio and temperature range of AOBD/E-51 are 10:100 and 122-156℃, respectively, and the post-curing temperature is 178℃. The mechanical properties of the thermosets were characterized as follows. The tensile strength is 30.7 MPa, the tensile modulus is 3 233.1 MPa, and the elongation at break is 1.1%. The dynamic mechanical thermal analysis results show that the maximum loss factor, the glass transition temperature, the storage modulus, and the crosslinking density are 0.56, 174.8℃, 134.8 MPa, and 3 198.8 mol·m^-3, respectively. Based on the IR spectra in different curing processes, the -CONH₂ groups of AOBD react with epoxy groups at lower temperature, and then the anions react with epoxy groups further at higher temperature to achieve the whole curing processes. This study provides informative guidelines for choosing new curing agents of epoxy resin.

Key words: AOBD, epoxy resin, curing agent, tensile properties, curing kinetics

中图分类号:

高升, 刘龙, 张延强, 贵大勇, 姜智一. 3-(2-氨基-2-氧乙基)-1-丁基咪唑二氰胺盐对环氧树脂(E-51)的固化工艺[J]. 中国科学院大学学报, 2020, 37(3): 289-294.

GAO Sheng, LIU Long, ZHANG Yanqiang, GUI Dayong, JIANG Zhiyi. Curing process of epoxy resin (E-51) and 3-(2-amino-2-oxoethyl)-1-butyl imidazolium dicyanamide[J]. , 2020, 37(3): 289-294.

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3-(2-氨基-2-氧乙基)-1-丁基咪唑二氰胺盐对环氧树脂(E-51)的固化工艺

Curing process of epoxy resin (E-51) and 3-(2-amino-2-oxoethyl)-1-butyl imidazolium dicyanamide

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