A new toughened epoxy vinyl ester resin product has been developed that shows the formation of a two-phase morphology on cure. The morphology of the resin can be controlled through the curing temperature and the curing formulation. Investigations on the physical properties of the cured neat resin as well as on composites show that the new resin exhibits superior impact and fracture toughness over existing resins.
Keywords: Epoxy Vinyl Ester Resin, Composite, Rubber-Modified