Abstract
Polypropylene (PP)/glass fiber (GF) and PP/GF/calcium carbonate (CaCO_3) composites were fabricated by melt-mixing process using a single screw extruder. Dumbbell shaped specimens were also fabricated from these mixture by injection molding process. Tensile tests were conducted using these specimens, and obtained results were compared for discussion of effect of CaCO_3 particle dispersion on the mechanical properties of PP/GF composite. Results show that tensile strength of PP/GF was improved by CaCO_3 compounding. The improvement effect was depended on the diameter of CaCO_3 particles and wettability between GF and PP.
