Tribological behavior of polyethersulfone-reinforced polytetrafluoroethylene composite under dry sliding condition

Polyethersulfone (PES) as an addition was blended into polytetrafluoroethylene (PTFE) to improve the tribological property of this type of polymer. The performances of anti-friction and wear resistance of the PES/PTFE composites are far better than that of the virgin PTFE. At the friction interface, the tribological behavior of the PES/PTFE composite is governed by the interaction between the PTFE transfer film and the PES layer. Of all the PES/PTFE composites, the composite with the PES addition of 40 wt% exhibits the best tribological property, attributing to the coexistences of the uniform PTFE transfer film and the continuous PES layer.