Preparation and Properties of Epoxy Resin/Carbon Fiber Composites Modified by Graphene
Epoxy resin/carbon fiber composites have the problems of high brittleness and poor impact toughness.In order to improve the properties of epoxy resin/carbon fiber,graphene was used to modify epoxy resin/carbon fiber.Graphene was grafted with silane coupling agent KH-560.Grafted graphene was reacted with waterborne epoxy resin to prepare epoxy resin/carbon fiber/graphene composites.The results show that when graphene content is 5%,the interface properties between carbon fiber and epoxy resin are the best.After KH-560 grafting,the elastic modulus,tensile displacement,and interfacial shear strength of epoxy resin were improved.