环氧树脂
固化(化学)
材料科学
热稳定性
极限抗拉强度
聚合
玻璃化转变
凝胶渗透色谱法
二乙烯三胺
傅里叶变换红外光谱
酰胺
高分子化学
复合材料
化学工程
聚合物
化学
有机化学
工程类
作者
Yi Jing,Shouhai Li,Jianling Xia,Mei Li,Haiyang Ding,Lina Xu,Xiaohua Yang
出处
期刊:ACS omega
[American Chemical Society]
日期:2019-04-03
卷期号:4 (4): 6238-6244
被引量:8
标识
DOI:10.1021/acsomega.9b00255
摘要
An epoxy curing agent polyether aliphatic polymerized amide (PEAPA) was synthesized using epoxy fatty acid methyl ester and diethylenetriamine. The Fourier transform infrared spectra and 1H NMR analysis indicated successful synthesis of PEAPA. Gel permeation chromatography showed a high degree of polymerization. The obtained PEAPA was used to cure E51 epoxy resin and partially replace rigid 1,3-cyclohexanediamine curing agent. A series of epoxy resins with varying rigidities were prepared. The mechanical and thermal properties of the materials were analyzed. Mechanical property tests showed that the tensile strength and hardness of the materials decreased gradually with increased PEAPA content. However, elongation at breaks of the prepared materials increased with increased PEAPA content. Micromorphological investigation indicated excellent compatibility between PEAPA and the curing system. Furthermore, a dynamic mechanical thermal analysis demonstrated that the glass transition temperature of the epoxy resin decreased with increased PEAPA content. Thermal stability, while still excellent, decreased slightly with the addition of PEAPA. At the primary weight loss stage, initial decomposition temperatures for all resins were above 330 °C.
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