Abstract
Carbon nanotubes (CNTs) and Carbon nanofibers (CNFs) are expected to be a new functional material. Moreover polymer matrix composites filled with CNT or CNF is expected as structural members like a space frame for automobile and bicycle as well as mechanical components for aerospace fields. In this study, we tried to form a pipe-shape molded CNF composite by extrusion molding set up designed for CNT composites. Extrusion molding is a low cost and continuously process. We can control an orientation of CNT with shear stress that is occurred by extruding flow and alternated rotation of inner and outer dies. In this way, we can give directionality of mechanical properties for products. Orientation of filler is observed by SEM observation. Mechanical property varies with the state of orientation.
