Journal Home > Volume 3 , Issue 3

This paper reports a series of studies on the lubricant properties, elastohydrodynamic film thickness, and coefficients of friction of several commercially available ester base stocks, i.e., diisooctyl phthalate (DIOP), diisodecyl phthalate (DIDP), diisotridecyl phthalate (DITDP), diisooctyl sebacate (DOS), diisotridecyl sebacate (DTDS), trihydroxymethylpropyl trioleate (TMPTO), and pentaerythritol tetraoleate (PETO). The results include densities and viscosities from 303 to 398 K, and elastohydrodynamic lubricant film thicknesses and friction in the boundary, mixed and full-film lubrication regimes measured at several temperatures, loads, and speeds. These ester base stocks have different lubrication abilities owing to their chain lengths, geometric configurations, and molecular rigidity. This study provides quantitative insight into the use of ester-based lubricants for low friction through the entire lubrication regime (boundary to full film) by utilization of suitable type and size of the ester base stocks.


menu
Abstract
Full text
Outline
About this article

Elastohydrodynamic lubrication properties and friction behaviors of several ester base stocks

Show Author's information Yifeng HE1,2Thomas J. ZOLPER3Pinzhi LIU2Yuzhen ZHAO2,4Xingliang HE2Xuejin SHEN2,5Hongwei SUN1Qinghua DUAN1Qian WANG2( )
Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
Department of Mechanical Engineering, University of Wisconsin, Platteville WI 53818, USA
Department of Mechanical Engineering, Northwestern University, Evanston IL 60208, USA
Chongqing Branch of Lubricant Company, SINOPEC, Chongqing 400039, China
School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China

Abstract

This paper reports a series of studies on the lubricant properties, elastohydrodynamic film thickness, and coefficients of friction of several commercially available ester base stocks, i.e., diisooctyl phthalate (DIOP), diisodecyl phthalate (DIDP), diisotridecyl phthalate (DITDP), diisooctyl sebacate (DOS), diisotridecyl sebacate (DTDS), trihydroxymethylpropyl trioleate (TMPTO), and pentaerythritol tetraoleate (PETO). The results include densities and viscosities from 303 to 398 K, and elastohydrodynamic lubricant film thicknesses and friction in the boundary, mixed and full-film lubrication regimes measured at several temperatures, loads, and speeds. These ester base stocks have different lubrication abilities owing to their chain lengths, geometric configurations, and molecular rigidity. This study provides quantitative insight into the use of ester-based lubricants for low friction through the entire lubrication regime (boundary to full film) by utilization of suitable type and size of the ester base stocks.

Keywords: friction, elastohydrodynamic lubrication, viscosity, ester, synthetic base stocks

References(41)

[1]
Sharma S K, Snyder C E, Gschwender L J. Tribological behavior of some candidate advanced space lubricants. Tribol Trans 36(2): 321–325 (1993)
[2]
Ziegler M, Fearon F. Silicon-based polymer science: A comprehensive resource. In Advances in Chemistry Series. Washington, DC: American Chemical Society, 1990.
DOI
[3]
De Jaeger R, Gleria M. Inorganic Polymers. New York: Nova Science Publishers Inc., 2007.
[4]
Schneider M P. Plant-oil-based lubricants and hydraulic fluids. J Sci Food Agr 86(12): 1769–1780 (2006)
[5]
Zolper T J, Li Z, Chen C L, Jungk M, Marks T J, Chung Y W, Wang Q. Lubrication properties of polyalphaolefin and polysiloxane lubricants: Molecular structure-tribology relationships. Tribol Lett 48(3): 355–365 (2012)
[6]
Höglund E. Influence of lubricant properties on elastohydrodynamic lubrication. Wear 232(2): 176–184 (1999)
[7]
Foord C A, Hammann C W, Cameron A. Evaluation of lubricants using optical elastohydrodynamics. Tribol Trans 11(1): 31–43 (1968)
[8]
Gohar R, Cameron A. Mapping of elastohydrodynamic contacts. ASLE Trans 10(3): 215–225 (1967)
[9]
Spikes H A, Cann P M. The development and application of the spacer layer imaging method for measuring lubricant film thickness. Proc IMechE, Part J: J Eng Tribol 215(3): 261–277 (2001)
[10]
Molimard J, Querry M, Vergne P. New tools for the experimental study of EHD and limit lubrications. Tribol S 36: 717–726 (1999)
[11]
Hamrock B J, Dowson D. Ball Bearing Lubrication: The Elastohydrodynamics of Elliptical Contacts. Lewis Research Center, Cleveland: National Aeronautics Space Administration, 1981.
DOI
[12]
Guangteng G, Spikes H A. Boundary film formation by lubricant base fluids. Tribol Trans 39(2): 448–454 (1996)
[13]
Smeeth M, Spikes H A, Gunsel S. The formation of viscous surface films by polymer solutions: Boundary or elastohydrodynamic lubrication. Tribol Trans 39(3): 720–725 (1996)
[14]
Bair S, Winer W O. A simple formula for EHD film thickness of non-Newtonian liquids. Tribol S 32: 235–241 (1997)
[15]
Aderin M, Johnston G J, Spikes H A, Caporiccio G. The elastohydrodynamic properties of some advanced nonhydrocarbon-based lubricants. Lubr Eng 48(8): 633–638 (1992)
[16]
Guangteng G, Spikes H A. The control of friction by molecular fractionation of base fluid mixtures at metal surfaces. Tribol Trans 40(3): 461–469 (1997)
[17]
Bair S. Elastohydrodynamic film forming with shear thinning liquids. J Tribol─Trans ASME 120(2): 173–178 (1998)
[18]
Dyson A, Wilson A. Paper 3: Film thicknesses in elastohydrodynamic lubrication by silicone fluids. Proceedings of the Institution of Mechanical Engineers, Conference Proceedings: SAGE Publications, 1965: 97–112.
DOI
[19]
Johnston G J, Wayte R, Spikes H A. The measurement and study of very thin lubricant films in concentrated contacts. Tribol Trans 34(2): 187–194 (1991)
[20]
Bair S, Qureshi F. The generalized newtonian fluid model and elastohydrodynamic film thickness. J Tribol─Trans ASME 125(1): 70–75 (2003)
[21]
Bair S. A rough shear-thinning correction for EHD film thickness. Tribol Trans 47(3): 361–365 (2004)
[22]
Gunsel S, Korcek S, Smeeth M, Spikes H A. The elastohydrodynamic friction and film forming properties of lubricant base oils. Tribol Trans 42(3): 559–569 (1999)
[23]
Chang H S, Spikes H A, Bunemann T P. The shear stress properties of ester lubricants in elastohydrodynamic contacts. J Syn Lubr 9(2): 91–114 (1992)
[24]
Fernández J, Luque P, Cuervo D. Influence of load and lubricants on EHD film thickness and rolling-contact fatigue lives of AISI 52100 steel balls. J Syn Lubr 15(4): 293–309 (1999)
[25]
Yokoyama F, Spikes H A. Film-forming properties of polyol esters, polyphenyl ethers and their mixtures over a wide range of temperature. Tribol Trans 43(1): 130–136 (2000)
[26]
Larsson R, Kassfeldt E, Byheden Å, Norrby T. Base fluid parameters for elastohydrodynamic lubrication and friction calculations and their influence on lubrication capability. J Syn Lubr 18(3): 183–198 (2001)
[27]
Lord J, Larsson R. Effects of slide-roll ratio and lubricant properties on elastohydrodynamic lubrication film thickness and traction. Proc IMechE, Part J: J Eng Tribol 215(3): 301–308 (2001)
[28]
Biresaw G, Sharma B K, Bantchev G B, Kurth T L, Doll K M, Erhan S Z, Kunwar B, Scott J W. Elastohydrodynamic properties of biobased heat-bodied oils. Ind Eng Chem Res 53(42): 16183–16195 (2014)
[29]
Biresaw G, Cermak S C, Isbell T A. Film-forming properties of estolides. Tribol Lett 27(1): 69–78 (2007)
[30]
Bantchev G B, Biresaw G, Cermak S C. Elastohydrodynamic study of blends of bio-based esters with polyalphaolefin in the low film thickness regime. J Am Oil Chem Soc 89(6): 1091–1099 (2012)
[31]
Bantchev G B, Biresaw G. Film-forming properties of castor oil-polyol ester blends in elastohydrodynamic conditions. Lubr Sci 23(5): 203–219 (2011)
[32]
Sarpal A, Sastry M, Kumar R, Bhadhavath S, Rai K, Bansal V, Patel M. Molecular dynamics of synthetic-based lubricant system by spectroscopic techniques—Part 1. Tribol Trans 56(3): 442–452 (2013)
[33]
Roelands C J A. Correlational aspects of the viscosity- temperature-pressure relationship of lubricating oils: TU Delft, Delft University of Technology, 1966.
[34]
Vankrevelen D W, Hoftyzer P J. Newtonian shear viscosity of polymeric melts. Angewandte Makromolekulare Chemie 52(1): 101–109 (1976)
[35]
Bair S, Qureshi F. Accurate measurements of pressure- viscosity behavior in lubricants. Tribol Trans 45(3): 390–396 (2002)
[36]
Ramasamy U S, Bair S, Martini A. Predicting pressure– viscosity behavior from ambient viscosity and compressibility: challenges and opportunities. Tribol Lett 57(2): 1–7 (2015)
[37]
ASME: Pressure-viscosity Report. New York: American Society of Mechanical Engineers, 1953.
[38]
Schrader R. Zur Schmierfilmbildung von Schmierolen und Schmierfetten im elastohydrodynamischen Walzkontakt. Dissertation, Hannover, 1988.
[39]
Gold P, Schmidt A, Dicke H, Loos J, Assmann C. Viscosity– pressure–temperature behaviour of mineral and synthetic oils. J Syn Lubr 18(1): 51–79 (2001)
[40]
Ohno N, Mia S, Morita S, Obara S. Friction and wear characteristics of advanced space lubricants. Tribol Transs 53(2): 249–255 (2010)
[41]
Muraki M, Sakaguchi K. Influence of the size, geometry, and material of the rollers on EHD traction. J Syn Lubr 9(3): 205–221 (1992)
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 19 May 2015
Revised: 22 August 2015
Accepted: 31 August 2015
Published: 10 September 2015
Issue date: June 2021

Copyright

© The author(s) 2015

Acknowledgements

Yifeng He and Yuzhen Zhao would like to acknowledge the support from Visiting Scholar Project of China Petrochemical Corporation (Sinopec). The authors would like to thank Center for Surface Engineering and Tribology at Northwestern University, USA, for research support. The Northwestern authors would also like to acknowledge the support from US Department of Energy (DE-EE0006449). The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

Rights and permissions

This article is published with open access at Springerlink.com

Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

Return