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首页> 外文期刊>Journal of Applied Polymer Science >Influence of an epoxy reactive diluent on the thermal degradation process of the system DGEBA n=0/1,2 DCH
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Influence of an epoxy reactive diluent on the thermal degradation process of the system DGEBA n=0/1,2 DCH

机译：环氧反应性稀释剂对系统DGEBA n = 0 / 1,2 DCH的热降解过程的影响

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摘要

The thermal degradation of two epoxy systems diglycidyl ether of bisphenol A (DGEBA n = 0)/1,2-diamine cyclohexane (DCH) containing different concentrations of an epoxy reactive diluent, vinylcyclohexene dioxide (VCHD), was studied by thermogravimetric analysis to determine the reaction mechanism of the degradation process for these two systems. Values of the activation energy, necessary for this study, were calculated by using various integral and differential methods. Values obtained by using the different methods were compared to the value obtained by Kissinger's method, which does not require a knowledge of the reaction mechanism. All the experimental results were compared to master curves in the range of Doyle's approximation (20-35% of conversion). Analysis of the results suggests that the two reaction mechanisms are R-n and F-n deceleratory type in contrast with the sigmoidal A(2) type of the system with filler and the sigmoidal A(4) type of the system without additives. (C) 2004 Wiley Periodicals, Inc. [References: 21]
机译：通过热重分析研究了两种含双酚A（DGEBA n = 0）/ 1,2-二胺环己烷（DCH）的环氧体系二缩水甘油醚的热降解，其中双酚A的二缩水甘油醚含有不同浓度的环氧反应性稀释剂乙烯基环己烯二氧化物（VCHD）。这两个系统的降解过程的反应机理。通过使用各种积分和微分方法，可以计算出这项研究所需的活化能值。将使用不同方法获得的值与通过基辛格方法获得的值进行比较，该方法不需要了解反应机理。将所有实验结果与Doyle逼近范围（转换的20-35％）中的主曲线进行比较。结果分析表明，两种反应机理是R-n和F-n减速型，与带填料的S型A（2）型和无添加剂的S型A（4）型相反。 （C）2004 Wiley Periodicals，Inc. [参考：21]

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