Curing agents commonly used for epoxy resins include aliphatic amines, cycloaliphatic amines, aromatic amines, polyamides, anhydrides, resins and tertiary amines. In addition, under the action of photoinitiator, ultraviolet or light can also cure epoxy resin. Amine curing agents are generally used for curing at room temperature or low temperature, while anhydrides and aromatic curing agents are generally used for heating curing.