摘要
以三苯基膦(TPP)和甲基丙烯酸甲酯(MMA)为原料合成了TPP/PMMA复合物,用DSC研究了TPP/PMMA催化双酚A二缩水甘油醚(EP828)/甲基四氢苯酐(MTHPA)体系固化反应动力学。非等温固化动力学研究结果表明,转化率在20%～60%范围内,用Ozawa法能较好地描述环氧树脂/酸酐体系的固化反应过程。
This paper reports that TPP/PMMA composite was synthesized from triphenylphosphine （TPP） and methyl methacrylate （MMA）. The curing kinetics of the bisphenol A diglycidyl ether （EP828） /methyl tetrahydrophthalic anhydride （MTHPA） system catalyzed with TPP/PMMA composite were investigated by differential scanning calorimetry （DSC） technique at different heating rates. The kinetic parameters of curing reaction were analyzed with Ozawa method, including the activation energy, pre-exponential factor and velocity constant. The effects of different catalyzer concentration on curing behavior, and kinetic parameters were also discussed. The results indicate that the curing process of EP828/MTHPA system catalyzed with TPP/PMMA composite dovetailed nicely with the results calculated by Ozawa method when the conversion was among the 20%-60%.
出处
《胶体与聚合物》
2007年第3期24-27,共4页
Chinese Journal of Colloid & Polymer
基金
广西教育厅资助项目。
