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Effects of Diffusion on the Kinetic Study of the System BADGE n=o/m-Xylylenediamine

机译:扩散对BADGE n = o / m-苯二甲胺体系动力学的影响

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摘要

The curing reactions of an epoxy system composed of a diglycidyl ether of bisphenol A (BADGE n=o) and m-xylyenediamine (m-XDA) were studied.Two models,the first based solely on chemical kinetics and the second accounting for diffusion,were used and compared to the experimental data.The epoxy resin was used as received in a first series of experiments.In a second series of experiments,the resin was purified in uacuo (180 deg C and 1 mmHg).The inclusion of a diffusion factor in the second model allwed for the cure kinetics to be predicted over the whole range of conversion covering both pre-and postvitrification stages.The investigation was made in the temperature range 50-110 deg C,which is considered optimum for the isothermal curing of the epoxy sysem studied.
机译:研究了由双酚A的二缩水甘油醚(BADGE n = o)和间二苯二胺(m-XDA)组成的环氧体系的固化反应。两种模型,第一种基于化学动力学,第二种基于扩散,使用环氧树脂并与实验数据进行比较。在第一系列实验中使用环氧树脂。在第二系列实验中,在uacuo(180℃和1 mmHg)中纯化树脂。第二个模型中的因素可以预测固化前后的整个转化率范围内的固化动力学。研究在50-110℃的温度范围内进行,这被认为是对等温固化的最佳选择环氧树脂系统研究。

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