Wear Resistance of Inhibited Plastics

Wear of inhibited plastics has been studied on model systems (PE + MO + Cl) [128] in pair with a steel counterbody. The wear rate has been estimated by weighing using a friction machine fitted with a vessel for friction in an electrolyte following the shaft in a bush friction geometry p = 0.35, MPa, v = 

The value of polymer part wear in acid is roughly of the same order as in air. The behavior of wear curves of the polymer samples during dry friction is attributed to frictional transfer (curves 4 -6 ) in which case the curves are arranged in order of material strength the strongest non-modified PE wears less. Impregnation of the mineral oil and Cl improves chemical resistance of PE and it therefore wears less (curves 5 and 6) than the pure PE (curve 4). 

An analogous effect is observed for the PTFE-chromium pair under lubricated friction with Cl [121]. Wear of both components diminishes noticeably in this case. This is due to passivation of the metal friction surface induced by desorption of Cl components containing active functional groups. As a result, the catalytic effect of chromium oxide compounds on tribocracking of PTFE macromolecules diminishes, leading to a decrease in the friction pair wear. 

It is quite apparent that Cl are able to function as efficient wear inhibitors and contribute to extending the lifespan of metal-polymer friction joints. 

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