Abstract
In the molding of thermoplastic composites, impregnation of thermoplastic resin into fiber bundles is difficult because of its high melt viscosity. Powder Impregnated Fabric (PIF) has been developed as an intermediate material of thermoplastic resin powder on surface of carbon woven fabric for easier impregnation. In this study, the relation between impregnation state, interfacial properties, mechanical properties, and molding conditions in the molding of CFRTP with PIF was investigated. Excellent impregnation state of less than 0.5% unimpregnation ratio was obtained in every molding time by using PIF. Although impregnation state was almost the same, tensile strength was increased with increase in molding time. From SEM micrograph of fracture surface, interfacial properties were improved by longer molding time. It was suggested that interfacial properties was improved by changing molding condition after completed impregnation.
