Studies on wear characteristics of Graphite and MoS2 Reinforced Ultra High Molecular Weight Poly Ethylene UHMWPE Composites

Abstract

This research delves into an extensive examination of the wear characteristics of Ultra High Molecular Weight Poly Ethylene (UHMWPE) reinforced with solid lubricants (MoS2) and nano lubricants (graphite). The investigation encompasses a broad spectrum of tribological behaviours under diverse experimental conditions, considering factors such as material composition, loading conditions, sliding speeds, and temperatures. The study involves meticulous material characterization, fabrication of UHMWPE composites through hot compression moulding, and systematic testing, including density, porosity, compression, and wear characterization using a Pin-on-Disk tribometer. The research addresses key limitations related to laboratory-scale experiments and potential variations in outcomes due to factors like lubricant concentration. Furthermore, it identifies critical research gaps in the field, including the limited exploration of nano lubricants, the determination of optimal lubricant concentrations, understanding interaction mechanisms at the molecular level, consideration of dynamic and realistic conditions, and the necessity for long-term wear and durability studies. The proposed tasks involve a stepwise approach, from material procurement and characterization to wear optimization using statistical methods, aiming to contribute significantly to the development of wear-resistant UHMWPE composites for various industrial applications. newlineThis study presents a comprehensive microstructural analysis of UHMWPE, micro MoS2, and nano graphite powders, offering crucial insights into their structural characteristics. The two-phase composite structure of UHMWPE emphasizes exceptional strength and toughness, while micro MoS2 reveals a layered structure vital for lubrication and energy storage. Nano graphite showcases a hexagonal layered structure, highlighting its lubricating and energy storage properties. EDX analysis confirms expected elemental compositions, ensuring material purity, and XRD graphs validate crystal structures. Compres