由扩散泵硅油高沸物制备高温润滑脂的性能

摘要

Two silicone high temperature greases were prepared with high-boiling components of diffusion pump silicone oil as the base oil, and metal fatty acid soap as the thickener. Experiments show that both the physical and chemical indicators of the greases are good. The high-boiling components can be thickened by metal fatty acid soap, among which the silicone grease in which a single lithium-based soap with fatty acids can be used at a temperature not higher than 120℃. The silicone high-temperature lubricant grease of lithium soap with a fatty acid complex can be used below 200℃, temperature up to 250℃ for short-term use.%以制扩散泵用硅油的高沸物为基础油、脂肪酸锂单皂或脂脂酸锂复合皂为稠化剂，制备出2种有机硅高温润滑脂。测试表明，两种润滑脂的理化指标都不错。脂肪酸金属皂能够稠化高沸物，其中用脂肪酸锂基单皂制备的有机硅润滑脂能在温度不高于120℃条件下使用；而用脂肪酸复合锂皂制备的有机硅高温润滑脂可在200℃以下使用，短期使用温度可达250℃。