Abstract:

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.