论文部分内容阅读
采用差示扫描量热仪(DSC)对以三苯基膦为促进剂的联苯型环氧-酚醛体系进行了不同温度下的恒温固化动力学研究,然后利用经典的Kamal方程进行非线性曲线拟合得到了相应的动力学参数:如反应级数(n)、活化能(Ea)和反应动力学常数(k)。并根据Kamal方程建立了转化率α对固化时间t的自加速理论模型,发现该模型能够很好的预测联苯型环氧-酚醛体系在不同温度下随恒温时间的固化行为。
The kinetics of isothermal solidification at different temperatures was studied by using differential scanning calorimetry (DSC) for the biphenyl epoxy-phenolic system with triphenylphosphine as a promoter. Then, the nonlinear Kamal equation The corresponding kinetic parameters are obtained by fitting: reaction order (n), activation energy (Ea) and reaction kinetic constant (k). Based on the Kamal equation, a self-accelerating theoretical model of the conversion α to the curing time t was established. It was found that this model can predict the curing behavior of the biphenyl epoxy-phenolic system at different temperatures with constant temperature.