HOLLOW STRUCTUAL PRODUCT OF CONTINUOUS FIBER REINFORCED THERMOPLASTIC COMPOSITES BY HIGH CYCLE MOLDING

摘要

In recent years, continuous fiber reinforced thermoplastic composites are attracting a lot of attention in various area such as automobile industry and aircraft industry because of the improvement of the fuel efficiency and the capability of automobile and aircraft. Thermoplastic composite can be molded in high cycle compared to thermo-setting composite and it has also second workability and recyclability. However, the combination of continuous fiber and thermoplastic resin have disadvantage that impregnation of resin to fiber bundle is difficult since the melting viscosity of thermoplastic resin is high. Therefore, the high cycle molding with the use of high impregnation materials have been expected. Hollow structural products with high strength and high rigidity by continuous carbon fiber are demanded as primary member for automobile industry. Frame structure as shown in Fig.1 can be constructed by welding thermoplastic composites such as cylindrical pipe, square pipe, pipe joint and so on because thermoplastic composite has second workability.