Synthetic oils based on pentaerythritol esters. Kinematic viscosity

• Published in: Fluid phase equilibria Vol. 581; p. 114074
• Main Authors: Emel'ianov, Vladimir V., Krasnykh, Eugen L., Sokolov, Alexandr B.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.06.2024
• Subjects: Esters of pentaerythritol; Kinematic viscosity; Lubricants; Viscosity index; Lubricants; Kinematic viscosity; Viscosity index; Esters of pentaerythritol
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/j.fluid.2024.114074

•The viscosities of 14 esters of pentaerythritol and monobasic carboxylic acids C2-C18 of various structures were determined.•The dependences of viscosity on temperature are obtained in accordance with ASTM D341.•Viscosity indices were determined for the studied esters in accordance with ASTM D2270 – 10. One of the main characteristics of lubricants is the viscosity index, which shows the dependence of oil viscosity on temperature. The higher the viscosity index, the better the lubricating properties of the oil. Esters of various polyols, in particular pentaerythritol, are very effective in this direction. This work examines a wide range of high-purity pentaerythritol esters of 14 compounds of varying degrees of branching and studies the temperature dependences of kinematic viscosity in the temperature range from melting temperatures to 150 °C. Based on the obtained data, the values of viscosity indexes were calculated, and the contribution of the carboxylic acid structure to the viscosity properties was also considered.