一、前言随着机械密封在各种化工泵、反应釜等旋转机械中的广泛采用,近年屏蔽泵的发展又使石墨滑动轴承大量应用于腐蚀性介质中。树脂浸渍石墨材料是理想的无油润滑耐磨材料,除了在高温、高转速、超低温等特殊条件下以外,浸渍树脂的电化石墨材料和碳 I. Introduction With the widespread use of mechanical seals in a variety of chemical pumps, reactors and other rotating machinery, the development of shielded pumps in recent years makes graphite sliding bearings in a large number of corrosive media. Resin-impregnated graphite material is the ideal non-lubricated wear-resistant materials, in addition to the high temperature, high speed, low temperature and other special conditions, the impregnated resin graphite material and carbon