Analytical Evaluation on Mechanical Characteristics of Discontinuous Carbon Fiber Reinforced Thermoplastic Composites

Abstract

The relation between mechanical properties of discontinuous carbon fiber reinforced plastics (CFRP) and the length and orientation of reinforcements were investigated. In this work, the blend of chopped CF (6 mm length) and polyamide 6 (PA6) were extruded and were pressed in order to prepare CFRP sheet. The orientations of CF in the CFRP were estimated by the X-ray diffraction of graphite in CF. The tensile modulus and bending modulus of those CFRPs depended on the orientations estimated by X-ray diffraction pattern. It was shown that X-ray diffraction is available for discussion about relation between mechanical properties and fiber orientations in the discontinuous CFRP.