An Application of a Free Volume Model to Lubricant Rheology I—Dependence of Viscosity on Temperature and Pressure
- 1 April 1984
- journal article
- research article
- Published by ASME International in Journal of Tribology
- Vol. 106 (2), 291-302
- https://doi.org/10.1115/1.3260907
Abstract
Analyses of the dependence of lubricant viscosity on temperature and pressure, μ(T,P), have been carried out by using a modified WLF equation in which pressure effects on viscosity are given in terms of the pressure dependence of the glass transition temperature, Tg , and of thermal expansivity of free volume, αf .Keywords
This publication has 3 references indexed in Scilit:
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- PVT relationships for liquid and glassy poly(vinyl acetate)Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 1974
- The free volume interpretation of the dependence of viscosities and viscoelastic relaxation times on concentration, pressure, and tensile strainColloid and Polymer Science, 1960