Development and Estimation of New Lubricant for Alternative Refrigerant

聚乙烯醚PVE是一种新型的替代制冷剂润滑剂。研究了PVE的摩擦磨损特性：1.通过与聚烯烃弹性体（POE）和聚亚烷基二醇（PAG）的摩擦磨损性能、与HFC的溶解性、毛细管阻力和压缩机耐久性的比较，确定PVE是一种优良的润滑剂。PVE的固化膜比POE和PAG的吸附膜具有更高的承载能力，而脂肪酸等对POE基本无效的添加剂改善了PVE的摩擦磨损性能。3. HFC 134 a的溶解降低了润滑油的粘度，使摩擦磨损性能变差。随着HFC 134 a的溶解度与润滑剂平均分子量之比的增大，粘度降低幅度减小。4.极性润滑剂POE和PAG使Al-Si合金与钢基体发生粘附，促进了Al-Si合金向钢基体的转移。在HFC 134 a中，铝硅合金表面形成了氟化物，氟化物具有一定的抗磨作用。

Polyvinylether PVE has been developed as a new lubricant for alternative refrigerant. The friction and wear characteristics of PVE were studied.1.PVE was confirmed to be an excellent lubricant on estimating the friction and wear performance, solubility with HFC, resistance of capillary tube restriction, and compressor durability compared with polyolester POE and Polyalkyleneglycol PAG.2.There are two types of boundary film, adsorbed film and solidified film. The solidified film of PVE exhibited the higher load carrying ability than the adsorbed film of POE and PAG.Furthermore, additives such as fatty acids largely ineffective with POE improved the friction and wear characteristics with PVE.3.The decrease in lubricant viscosity by dissolved HFC134a made the wear characteristics worse. The viscosity reduction decreased with an increase in the ratio of solubility of HFC134a to the mean molecular weight of lubricant.4.With polar lubricants POE and PAG adhesion between Al-Si alloy and mated steel occurred, and transfer of the Al-Si alloy to the steel was promoted. In HFC134a fluorides were formed on Al -Si alloy surfaces The fluorides had an ability to prevent wear.