LOW FRICTION AND LOW WEAR POLYMER/POLYMER COMPOSITES

摘要

A high strength multi-layer polymeric article having a low wear surface includes a base polymer layer, and a polymer composite capping layer disposed on the base polymer layer. The capping layer includes a first polymer including a transfer film forming polymer, and a second polymer different from the first polymer for strengthening this polymer composite mixed with the first polymer. The first polymer provides at least 10 weight % of the composite capping layer. A transition layer composite including the first and second polymer is interposed between the capping layer and the base polymer layer, at least a portion of the transition layer providing a non-constant first or second polymer concentration. A wear rate of the article is <10^-7 mm³/Nm. The first polymer can be PTFE and the second polymer can be a polyaryletherketone (PEEK).