Abstract: Based on the test of plastic sliding friction and wear，the sliding friction and wear process was researched between Ulter-high molecular weight polyethylene and sand paper. The aim was to provide the method to evaluate the anti-wear properties of UHMWPE flat and pipe materials. In this paper, along with various friction distances, the wear value and wear width of UHMWPE changed in evidence, and the worn surfaces of UHMWPE took distinct tribological characters. The strong heat was produced in the friction process, and oxidation happened. The friction and wear process were analyzed via the various mechanisms involving abrasive wear, adhesive wear and fatigue wear.

Key words: UHMWPE, sliding friction, frictional pair, wear