抄録
PET fiber reinforced PE thermoplastic composites were molded by using industrial wastes of PET/PE core/sheath non-woven fabrics. The waste fabrics were fed directly into the injection molding machine without prior pelletizing to simplify the molding process. The composition of the fabrics used was 50% PET and 50% PE. By controlling the molding temperature, the PE portion of the fabric could be melted while keeping the PET fibers intact during the injection molding process. At a molding temperature of 200°C, the tensile, bending and impact behavior of the molded composites were much higher than those of the neat PE matrix. Reasonably high Izod impact values were also obtained for the molded composites. However, both the strength and modulus decreased with increasing molding temperature because of the thermal damage to the PET fibers at higher temperatures. The molding system discussed in this paper shows promise for contributing toward the material recycle of core/sheath fiber wastes as a raw material of thermoplastic composites.
