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一、前言随着现代空间技术、军工、机械、电子与化工等许多工业部门发展的需要,各种压缩机实现无油润滑是当前新技术发展的一个重要方面。其中研制具有自润滑性又耐磨的复合塑料活塞环是这项新技术的一个关键性任务。塑料活塞环的主要问题是使用寿命的长短;而其寿命则决定于它的耐磨性。塑料活塞环的磨损量W与滑动面压力p及所经过路程S的乘积成正比,即W=kps=kpvt式中k是磨损因数(由塑料材质、对磨件材质及表面光洁度、气体介质、温度等决定的),v是活塞线速度,
I. Introduction With the development of many industrial sectors such as modern space technology, military industry, machinery, electronics and chemical industry, it is an important aspect of the current development of new technology to realize various oil-free lubrication of compressors. The development of self-lubricating and wear-resistant composite plastic piston rings is a key task of this new technology. The main problem with plastic piston rings is the length of their useful life; their life depends on their wear resistance. Plastic piston ring wear W and the sliding surface pressure p and the distance S is proportional to the product, that is, W = kps = kpvt Where k is the wear factor (made of plastic material, the wear material and surface finish, gas medium, Temperature, etc.), v is the linear velocity of the piston,