Epoxy Resin has a series of characteristics such as good process performance, excellent mechanical properties, low curing shrinkage, and large room for modification, and has become the most widely used type of composite resin matrix.

Due to the shortcomings of high moisture absorption and poor dimensional stability of general-purpose epoxy resin, it cannot meet the higher requirements for the use characteristics of epoxy resin composite materials in recent years, such as heat resistance, moisture absorption rate, power saving performance, impact toughness, etc. Epoxy resin modified composite materials have been developed rapidly. The modification of epoxy resin matrix composites is mainly carried out on the epoxy resin matrix, mainly in two aspects: (1) Improve the damp-heat performance to increase the service temperature, which is mainly achieved by synthesizing new structural epoxy resin and curing agent; (2) ) to improve toughness to improve the damage tolerance of composites, mainly through the use of new curing agents and toughening agents.