What are the main effects of wetting agents on the application performance of composite materials?

(1) Wet strength retention rate, which is used to determine the type of coupling agent on the resin-fiberglass interface and the effects of other components of the sizing agent on the interface.

(2) Tensile strength and flexural strength are used to determine the interfacial bonding strength between the impregnant and the fiberglass.

(3) Impact strength: The impact strength of fiberglass reinforced resin materials requires good interface bonding and certain toughness.