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    PRODUCTION OF CERAMIC NANOPARTICULATE REINFORCED POLYMER MATRIX COMPOSITES AND CHARACTERIZATION OF THEIR MECHANICAL PROPERTIES
    (2022-01) Alsadaie, Milad Omar Salem
    In recent studies, to improve thermal and antibacterial properties of polyethylene, copper is added to matrix. However, addition of copper to polyethylene matrix cause to decrement of mechanical properties despite its positive effect on thermal properties. Thus, mechanical properties of copper/polyethylene composites are needed to be enhanced using a reinforcement material. This study aims to investigate effect of vanadium carbide content on thermal, mechanical and tribological properties of copper/polyethylene matrix composites. For this purpose, copper/polyethylene composites containing nano vanadium carbide particles in different ratios (0.5 wt.%, 1 wt.%, 2 wt.%) were produced by injection molding. In order to examine thermal properties of samples, differential thermal analysis (DTA) was conducted. Tensile, flexural and impact tests were applied to understand mechanical properties of composites. Reciprocating wear test was performed under different loads (20N, 30N, 40N) to examine tribological properties. Also, the cross-sectional surfaces of samples were investigated by Scanning Electron Microscope (SEM). The results show that thermal stability of PE/15Cu composite was improved by addition of VC. Also, hybrid composites including 1 wt.% VC had nearly 17% and 15% higher flexural strength and impact energy, respectively. However, VC addition caused to decrease of wear resistance when the reinforcement ratio is more than 0.5 wt.%.