Research progress of epoxy resin composites toughened using thermoplastic resin
Epoxy resin becomes severely fragile with low toughness and poor internal impact after curing,limiting its application to a specific range.To address these problems,the modification methods for thermoplastic resin and the research progress of resin interface after modification were investigated by examining relevant studies on epoxy resin toughening.The research status of epoxy resin toughened using thermoplastic resins,such as polysulfone,poly-ethersulfone,polyether ether ketone,and polyimide,was analyzed.It was revealed that blends of epoxy resin toughened using thermoplastic resin changed from a homogeneous state to a fixed phase morphology with a high crosslinking structure,which greatly improved the properties of the materials.