聚苯醚/环氧体系非等温固化行为及固化工艺

采用程序升温差示扫描量热仪（DSC）法，用Kissinger方程研究了聚苯醚（PPE）/环氧（EP）体系不同配比混合物的固化反应动力学特征。非等温DSC研究表明PPE/EP体系的固化反应过程比较复杂，其动力学参数受PPE含量的影响较大，PPE/EP混合物的固化反应起始温度随PPE含量的增大而增大，最大放热峰的峰温均随着PPE含量的增加而减小。Kissinger法计算得到PPE/EP体系10% PPE、20% PPE、40% PPE含量（质量）的表观活化能依次为63.88、55.37、47.31 kJ·mol^-1, 说明PPE可以促进环氧树脂的固化反应。在此基础上，以20% PPE/EP体系为例，采用T - β 图外推法，得到了其固化工艺

Nonisothermal curing behavior and curing technics of PPE/EP system

The curing reaction of PPE/EP system with different PPE/EP ratio was studied under temperature programming curing condition.Differential scanning calorimetry (DSC) was the thermo-analytical technique used to determine the curing kinetics.The result showed that the curing reaction process of PPE/EP system was very complex, PPE content had an important effect on curing kinetic parameters, initial curing temperature increased and the peak temperature of maximal exothermic peak decreased with increasing PPE content.The apparent activation energy values of PPE/EP system with PPE content of 10%，20% and 40%(mass) obtained by the Kissinger treatment were equal to 63.88 kJ·mol^-1，55.37 kJ·mol^-1 and 47.31 kJ·mol^-1, respectively.PPE could accelerate the curing process of epoxy resin.The curing technique of PPE/EP system with PPE content of 20%(mass) was obtained by extrapolation of T-β figure.