The formation of domestic FRP is still the most ancient method of composite molding – hand lay-up.
The process of the hand lay-up process is: firstly apply a release agent on the surface of the mold which has been cleaned or surface-treated, and after sufficient drying, a curing agent (initiator), an accelerator, a pigment paste and the like are added. Stir the gel coat or resin mixture evenly, apply it on the…