Polymer composites have a wide potential for various innovative applications. Due to high processability, Polypropylene (PP) is most widely used low melting point polymers by the manufacturing industries. In the present research, two ceramic micro fillers Alumina, titania (Al2O3 and TiO2) and one marble industrial wastes (Marble micro dust) from Rajasthan have been used as the micro filler materials. By using Injection Moulding method, PP composites were fabricated having 5%, 10%, 15% and 20 weight percentages of filler Alumina (Al2O3), titania (TiO2) and the Marble micro dust. Then the fabricated composites were investigated by bending strength and compressive strength with procedure of ASTM standards. It was investigated that among the three series of PP composite, max. bending strength was identified in PP-marble composite which was 65 MPa. Compressive strength (CS) of Polypropylene composite/compounds with altered weight % (from 5 to 20 wt. %) having Al2O3, titania and white Marble micro dust obtained in increasing trend with 98.5 - 122 MPa, 114 - 172 MPa and 104 – 159 MPa respectively. Thus it was observed that the max. CS was 88.26%, more than the virgin (unfilled) Polypropylene which was observed in titania- combination with 20 weight %.
Compressive strength and marble micro-dust, Bending strength, Composite materials, Injection molding