Abstract
The mechanical properties of short glass fiber (GF) reinforced Polypropylene (PP) injection molded parts with various surface treatments and different compounding methods were investigated in this study. The effects of the different surface treatments on the interfacial strength as well as the influence of the pre-molding compounding process and its parameters on the composites' characteristics were determined. Next to basic material properties a focus was laid on fracture toughness and fatigue behavior. A clear recommendation as to kind of the extrusion process could be established and the interfacial effects on the overall mechanical properties of the tested materials could be assessed.
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