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Article history: Received: 26 April 2016 Received in revised form: 29 May 2016 Accepted: 3 June 2016 Available online: 14 July 2016 The main objective of this research is to study the effect of adding iron powder (IP) to recycled polypropylene (RPP) using the injection moulding process. The iron powder was mixed mechanically with RPP in 10%, 20%, and 30% by weight. The mechanical properties of recycled polypropylene reinforced with iron powder were investigated using tensile, and hardness tests. The wear resistance of the composites were investigated. The results showed that, by adding 10%, 20%, 30% wt. of iron powder to the recycled polypropylene, the ultimate tensile strength increased from 21 N/mm2 for neat recycled polypropylene to 24.828 N/mm2 (i.e. 18.23%), 26.34 N/mm2 (i.e. 25.44%), 27.72 N/mm2 (i.e. 32%), respectively. The modulus of elasticity is increased to 412.06 MPa (6.28%), 427.4 MPa (10.259%, and to 566.30 MPa (46.09%) when adding 10% IP, 20% IP, and 30% IP to the RPP respectively. The hardness test results, using Shore D tester, showed that, as the iron particles contents are increased, the hardness are increased from 71 for the RPP, to 72.5, 75, and 76 for RPP with iron particles contents of 10%, 20%, and 30%wt respectively. The wear test results showed that, the weight loss is decreased at 10%, 20%, and 30% of iron powder in the recycle polypropylene when compared with the neat recycle polypropylene by 43.34%, 21.98%, and 18.28% respectively. Scan Electronic Microscopy (SEM), showed that, a good interlock and interference between the iron particles and the recycled polypropylene.

Mechanical Properties, Microstructure and Wear Resistance of Recycled Poly-propylene Filled with Iron Powder