What is A-Stage A Stage

A-Stage A stage---- refers to the fiberglass cloth or cotton paper of the reinforcing material in the manufacturing process of the film (Prepreg), and the glue of the resin (Varnish, also translated as varnish) when impregnating through the glue tank. Water), which is still in monomer and diluted with solvent, is called A-Stage. Relatively when the fiberglass cloth or cotton paper is sucked into the glue, and then dried by hot air and infrared rays, the molecular weight of the resin is increased to an Oligomer or an oligomer (Oligomer), which is then attached to the reinforcing material to form a film. The resin state at this time is called B-Stage. When heating and softening are further continued and further polymerization is performed to become the final polymer resin, it is called C-Stage.