Thermophysical Properties of Polyol Ester Lubricants

Published

August 20, 2019

Author(s)

Thomas J. Bruno, Tara Fortin, Marcia L. Huber, Arno D. Laesecke, Eric Lemmon, Elisabeth Mansfield, Mark O. McLinden, Stephanie L. Outcalt, Richard A. Perkins, Kimberly N. Urness, Jason A. Widegren

Abstract

This report summarizes the results of work performed for the Naval Air Warfare Center Aircraft Division by the National Institute of Standards and Technology (NIST), Applied Chemicals and Materials Division on the properties of polyol ester lubricants under interagency agreement number N0042115IP00008. The works includes purity analysis and assessment, decomposition studies, experimental measurements on density, isobaric heat capacity, speed of sound, vapor pressure, viscosity, thermal conductivity, and distillation curve measurement. Models were developed for the thermodynamic properties, viscosity, and thermal conductivity that represent these properties to nearly within their experimental uncertainty for three pure polyol ester base fluids (pentaerythritol tetrapentanoate (POE5), pentaerythritol tetraheptanoate (POE7), pentaerythritol tetranonanoate (POE9), and a fully qualified lubricant meeting military specification MIL-PRF-23699.

Citation

NIST Interagency/Internal Report (NISTIR) - 8263

Report Number

8263

NIST Pub Series

NIST Interagency/Internal Report (NISTIR)

Pub Type

NIST Pubs

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DOI Link

Keywords

Correlation, density, equation of state, heat capacity, lubricants, speed of sound, thermal conductivity, thermal decomposition, thermophysical property, vapor pressure, viscosity

Citation

Bruno, T. , Fortin, T. , Huber, M. , Laesecke, A. , Lemmon, E. , Mansfield, E. , McLinden, M. , Outcalt, S. , Perkins, R. , Urness, K. and Widegren, J. (2019), Thermophysical Properties of Polyol Ester Lubricants, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.8263 (Accessed October 9, 2025)