Elastohydrodynamic Properties of Biobased Heat-Bodied Oils
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- 作者：Girma Biresaw ; Brajendra K. Sharma ; Grigor B. Bantchev ; Todd L. Kurth ; Kenneth M. Doll ; Sevim Z. Erhan ; Bidhya Kunwar ; John W. Scott
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2014
- 出版时间：October 22, 2014
- 年：2014
- 卷：53
- 期：42
- 页码：16183-16195
- 全文大小：623K
- ISSN：1520-5045
文摘
Heat-bodied oils were prepared by thermal treatment of soybean oil under inert atmosphere. Different viscosity grades of heat-bodied oils synthesized by varying the reaction time were investigated for various properties including viscosity, viscosity index, elastohydrodynamic film thickness, and pressure鈥搗iscosity coefficient. Heat-bodied oils displayed elastohydrodynamic film thickness characteristics typical of lubricating oils. The film thickness of heat-bodied oils increased with increasing entrainment speed and viscosity, decreased with increasing temperature, and was unchanged with varying load. Pressure鈥搗iscosity coefficients of heat-bodied oils were estimated from film thickness as well as from physical property data. The pressure鈥搗iscosity coefficient values of heat-bodied oils increased with increasing viscosity and decreasing temperature and were in the range displayed by such oils as polyol esters, poly-伪-olefins, and petroleum-based base oils. Heat-bodied oils provide access to a wide viscosity range of biobased oils not attainable with vegetable oils, without serious negative impact on critical lubricant properties such as viscosity index, film thickness, and pressure鈥搗iscosity coefficient.