Preparation and curing process optimization of an asymmetric impregnated vacuum bag-only prepreg

One of the most significant defects, porosity, has been proven to affect properties composites. It is critical reduce porosity composite material and curing cost while maintaining high laminate quality for vacuum bag-only prepreg. In this paper, a rapidly cured epoxy resin system was developed, an alkali-free glass fiber fabric prepreg suitable bag molding prepared by asymmetric impregnation method. The optimal process determined kinetics, dielectric viscosity, initial temperature, time on quality. profile obtained. addition, effect room temperature exposure also evaluated. These laminates produced had outstanding internal mechanical via changes in procedure.