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首页> 外文期刊>Journal of Applied Polymer Science >Thermal stability and kinetics analysis of rubber-modified epoxy resin by high-resolution thermogravimetric analysis
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Thermal stability and kinetics analysis of rubber-modified epoxy resin by high-resolution thermogravimetric analysis

机译：高分辨率热重分析法分析橡胶改性环氧树脂的热稳定性和动力学

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摘要

A dynamic heating rate mode of high-resolution thermogravimetric analysis was used to study the thermal and thermal-oxidative stability, as well as kinetics analyses, of a model liquid rubber-modified epoxy resin, Ep/CTBN, made up of bisphenol A diglycidyl ether-based epoxy and carboxyl-terminated butadiene acrylonitrile rubber (CTBN). Results show that the thermal degradation of Ep/CTBN resin in nitrogen and air consists of two and three independent steps, respectively. Moreover, Ep/CTBN has a higher initial degradation temperature and higher activation energy than those of pure epoxy resin in both gases, indicating that the addition of CTBN to epoxy can improve the thermal and thermal-oxidative stability of pristine epoxy resin. Kinetic parameters such as activation energy, reaction order, and preexponential factor of each degradation step of both Ep/CTBN and pure epoxy resins in air and nitrogen were calculated. (C) 2003 Wiley Periodicals, Inc. [References: 21]
机译：使用高分辨率热重分析的动态加热速率模式来研究由双酚A二缩水甘油醚组成的模型液态橡胶改性环氧树脂Ep / CTBN的热和热氧化稳定性以及动力学分析基环氧和端羧基丁二烯丙烯腈橡胶（CTBN）。结果表明，Ep / CTBN树脂在氮气和空气中的热降解分别包括两个和三个独立的步骤。此外，在两种气体中，Ep / CTBN的初始降解温度和活化能均高于纯环氧树脂，这表明在环氧树脂中添加CTBN可以提高原始环氧树脂的热稳定性和热氧化稳定性。计算了Ep / CTBN和纯环氧树脂在空气和氮气中每个降解步骤的动力学参数，例如活化能，反应顺序和预指数因子。 （C）2003 Wiley Periodicals，Inc. [参考：21]

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