Abstract
In the molding of the carbon fiber reinforced thermoplastic (CFRTP), impregnation of the carbon fiber (CF) bundle is one of the important issues. In this study, we discussed the influence of the melting viscosity of matrix polycarbonate (PC) resin into the CF fabric substrate on the impregnation behavior, and also discussed the influence of the viscosity of the PC and molding time on the formation mechanism of the void. The CF/PC composites were prepared by using the CF plain fabric and PC film using film stacking method by changing the molding temperature and the molding time. According to the photograph of CF/PC surface, the PC resin into the CF bundle flowed in the chink of the CF bundle and crossing point of CF fabrics. The voids were formed by the PC resin impregnated as surrounding the aggregateofCF.Thesizeofvoids becomes smaller by impregnation of the PC resin into inside of the aggregate of CF. Therefore, when the matrix viscosity of PC is low, resin is easy to flow and the size of voids is easy to become smaller.
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