Adhesive and frictional behaviour of polymeric composites based on kenaf fibre

Abstract

[Abstract]: This paper presents an attempt to use kenaf fibres as a reinforcement for tribo-polyester composite for bearing applications. Kenaf fibres reinforced epoxy (KFRE) composites were fabricated using a closed mould technique associated with vacuum system. Adhesive wear and frictional behaviour of the composites were studied against polished stainless steel counterface using Block-On-Disc (BOD) machine at different applied loads (10-100N), sliding distances (0-5km) and sliding velocities (1.1-3.9m/s). Furthermore, the effect of the fibre orientations, with respect to the sliding direction, were considered, i.e. Parallel (P-O), Anti-Parallel (AP-O) and Normal (NO). The morphology of the worn surfaces of the composites was studied using a scanning electron microscope (SEM). The result revealed that the presence of kenaf fibres in the composite enhanced the wear and frictional performance of the epoxy. Applied load and sliding velocity have less effect on the specific wear rate of the composite in all the three orientations. The composite exhibited better wear performance in P-O and AP-O compared to N-O.