Research on tribological properties of wear-resistant polytetrafluoroethylene fabric

The tribological properties of polytetrafluoroethylene fabric (PTFE fabric) were investigated on MPX-200 and MM-200 friction and wear testers. Comparative friction and wear tests were conducted for the PTFE fabrics of 80% and 50% fiber under the lubrication of different liquids. The morphology of the worn surface of the fabrics was examined with an optical microscope. The results show that the PTFE content in the fabric influence, the friction and wear behavior considerably. A higher content of PTFE results in lower friction coefficient and lower heat generation, and hence smaller wear. The bushing made of PTFE fabrics which has oscillated for 25000 cycles according to the aviation criterion registers a wear depth less than 0.15 mm.