Dry self-lubricating composites

Abstract

Chopped strand carbon fibers, glass fibers and their hybrids were used to reinforce an epoxy matrix to which additives of PTFE, graphite and molybdenum disulfide were used for producing a dry self-lubricating material. Their tribology properties were studied using testing machines of thrust and journal radial. Also, the PV value, friction coefficient, wear rate and the contact surface temperatures were determined. The compression strength of the bush ring and the impact strength of material were evaluated. The surfaces of wear were investigated. The mode of fracture mechanism is proposed according to the specimens morphology. The relationship between friction coefficient and loading correlated well with the Myoshis equation in the case of a backing material. This study provided an optimal approach of making dry wear bearings by glass fibers backing at low friction coefficient. Copyright (C) 1996 Elsevier Science Limited