合成潤滑油粘度に対する圧力・温度効果

抄録

Viscosity of several synthetic lubricants is measured in a diamond-anvil high-pressure cell by falling sphere method at elevated temperature. Viscosity-pressure coefficients of bicyclohexylcyclo-hexylmethane, dimethylsilicone and their mixture are obtained, which are important in elastohy-drodynamic lubrication and traction coefficient. In order to discuss the property of the mixture, Wright method is applied and shows agreement with this data. Viscosity-temperature characteristics under high pressure are also discussed using Walther's equation, and this equation proved to be effective even under high pressure. Factors relating viscosity-temperature property of the mixture are close to those of dimethylsilicone.