加熱引抜成形金型を用いた一方向CF/PA6丸棒の製造と評価

抄録

Carbon fiber reinforced thermoplastic (CFRTP) rivet is needed for multi-material to achieve weight reduction and high strength. For manufacturing rivet made of CFRTP, it is necessary to mold CFRTP rod. To mold CFRTP rod, pultrusion molding which has extremely productive and environmental performance is the most suitable method in CFRTP molding methods. The process of pultrusion molding melts materials by heating and solidify it by cooling. Because of its continuous molding method, pultrusion process is semi-permanently molding method as long as supplying the materials. The material used in pultrusion molding is a unidirectional opening carbon fiber polyamide 6 semi prepreg sheet.(Opening UD-CF/PA6 semi prepreg sheet). But It hasn’t been known that the input amount of Opening UD-CF/PA6 semi prepreg sheet affects mechanical characteristics and volume fraction of fiber of CFRTP rods. This study aims to develop the unidirectional CFRTP rods using pultrusion method and investigate effects of the input amount of the materials. The experiments results revealed that increasing of input amount of materials improve the mechanical characteristics and volume fraction of fiber. The highest number of fiber volume fraction, maximum bending strength and bend elastic constant of molded CFRTP rod in this study is 48 vol%, 284 MPa and 36 GPa.