Wear Property of PTFE Composites Reinforced by Glass Fibers and Graphite

The composites of polytetrafluoroethylene(PTFE) filled with glass fiber and graphite at various mass fraction were prepared by means of mechanical blending,compression molding and sintering.The friction and wear properties of the composites were investigated on M-2000 wear tester in dry friction condition.The influences of glass fibers and graphite were studied and the wear mechanisms were discussed.The wear surfaces were examined by scanning electron microscopy.The results showed that the wear-resisting property of composites was improved largely through the filling of modified glass fibers,while the hardness was also increased.Glass fibers and graphite could considerably improve the wear resistance of PTFE composites.The composite filled with 20%glass fibers and 10% graphite had the comparatively better wear and frictional properties.