对含γ-三氟丙基侧链的氟硅油在四球机上的润滑性进行了研究.结果表明,其润滑性不如酯类润滑油.可通过两条途径改进氟硅油的润滑性:加入润滑添加剂或是改进氟硅油的分子结构.含氯和含磷化合物作为添加剂虽能提高氟硅油的润滑性,但与氟硅油的相容性不好.通过在γ-三氟丙基侧链优化引入元素Cl,可明显提高氟硅油的润滑性能,其极压性能还优于酯类润滑油,并在齿轮试验机上得到了验证.含Cl氟硅油还具有优异的高温氧化安定性,对金属不产生腐蚀.%The four-ball lubricity of fluorosilicone containing γ-trifluoropropyl was studied. The results show that it is not as good as ester-based oil. The lubricity of fluorosilicone is improved through blending additives in or to improve the molecular structure on base stock. The common compounds including chlorine and phosphorus increase the lubricity of fluorosilicone, but the poor solubility in fluorosilicone is showed. Through inserting Cl to γ-trifluoropropyl chain of fluorosilicone, the lubricity is improved markedly, its extreme load characteristic is better than ester-based lubricating oil. This case is examined by gear test. The Cl-fluorosilicone also has excellent high temperature oxidation stability, and has no corrosiveness to metals.
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