INVESTIGATION OF CURE IN EPOXY ACRYLATE RESINS USING RHEOLOGICAL AND DIELECTRIC MEASUREMENTS

Dielectric and theological measurements are reported for the cure in a series of mixtures of an epoxy-acrylate with n-butyl methacrylate. Th e level of the initiator and proportions of the epoxy acrylate and n-b utyl methacrylate influence the cure characteristics and morphology of the film formed. Analysis of the theological data indicates that duri ng the curing process, microphase separation occurs within the mixture . The changes in the dielectric relaxation behavior with composition o f the completely cured material is also consistent with microphase sep aration occurring in these resins while they are cured.