Evaluation of Joining Strength Properties of Carbon Fiber Reinforced Thermoplastics Manufactured by Hybrid Injection Molding

Abstract

This study aims to develop the hybrid injection molding method combined with hot pressing for mass production of continuous carbon fiber reinforced thermoplastic parts. A new type of heating system for hybrid injection molding was originally developed using near-infrared light and its linear drive carrier. The results shown the fusion bonding between woven CF/PA66 laminate formed thermally and short CF/PA66 injection-molded was significantly affected by the injection pressure and the heating time of woven CF/PA66 laminate, while the surface of skin layer was also thermally-deteriorated by overheating. Thus the heating conditions should be optimized to be satisfied the both fusion bonding strength and the surface quality.