Abstract
Pottery stone (PTS) filled polypropylene (PP) composites were prepared using a twin screw extruder and injection molding machine. PTS used in this study is in a particulate form with an average particle size of 6.95 μm. The melt flow index (MFI), tensile properties (tensile strength, Young’s modulus and elongation at break), notched-impact strength, flexural strength, thermal stability and morphology of the PP/PTS composites were investigated. The results showed that the incorporation of PTS into the PP matrix caused a slight decrease in the MFI, an increase in the tensile strength (5 and 10 phr, but 10 phr optimal), Young’s modulus (all, but 20 phr optimal), impact strength (all, but 20 phr optimal), flexural strength (all, but 10 phr optimal) and thermal stability (all, but 20 phr optimal) and a decrease in the elongation at break. Therefore, PTS can be effectively used as reinforcing filler in PP. The fractured surfaces of the composites displayed the well dispersed of PTS in PP matrix and also exhibited plastic deformation feature.
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