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Title: Effect of viscosity index improvers on the elastohydrodynamic lubrication characteristics of a chlorotrifluoroethylene and a polyalphaolefin fluid

Abstract

Consideration is given to the film thickness characteristic and traction behavior of two important classes of synthetic lubricants. The effect of viscosity index (VI) improvers on these properties is determined for both hydrogenated polyalphaolefin (PAO) base fluids and chlorotrifluoroethylene oligomer (CTFE) base fluids. A polyalkylmethacrylate VI improver is studied in PAO and a copolymer of vinylidine fluoride and chlorotrifluorethylene is studied in CTFE. The VI improvers exhibited insignificant improvements in the elastohydrodynamic lubrication (EHL) film thickness of both the PAO and CTFE base fluids as determined by comparing the measured film thickness of the VI-improved fluids to the predicted film thickness based on measured pressure-viscosity characteristics and kinematic viscosities determined at low shear rates. 16 refs.

Authors:
; ;  [1]
  1. USAF, Wright Lab., Wright-Patterson AFB, OH (United States)
Publication Date:
OSTI Identifier:
5493312
Resource Type:
Journal Article
Journal Name:
ASLE Transactions (American Society of Lubrication Engineers); (United States)
Additional Journal Information:
Journal Volume: 36:4; Journal ID: ISSN 0569-8197
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 42 ENGINEERING; THIN FILMS; LUBRICATING PROPERTIES; VISCOSITY; LUBRICATION; PHYSICAL PROPERTIES; FILMS; 320302* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Materials; 420400 - Engineering- Heat Transfer & Fluid Flow

Citation Formats

Sharma, S K, Forster, N H, and Gschwender, L J. Effect of viscosity index improvers on the elastohydrodynamic lubrication characteristics of a chlorotrifluoroethylene and a polyalphaolefin fluid. United States: N. p., 1993. Web. doi:10.1080/10402009308983195.
Sharma, S K, Forster, N H, & Gschwender, L J. Effect of viscosity index improvers on the elastohydrodynamic lubrication characteristics of a chlorotrifluoroethylene and a polyalphaolefin fluid. United States. https://doi.org/10.1080/10402009308983195
Sharma, S K, Forster, N H, and Gschwender, L J. 1993. "Effect of viscosity index improvers on the elastohydrodynamic lubrication characteristics of a chlorotrifluoroethylene and a polyalphaolefin fluid". United States. https://doi.org/10.1080/10402009308983195.
@article{osti_5493312,
title = {Effect of viscosity index improvers on the elastohydrodynamic lubrication characteristics of a chlorotrifluoroethylene and a polyalphaolefin fluid},
author = {Sharma, S K and Forster, N H and Gschwender, L J},
abstractNote = {Consideration is given to the film thickness characteristic and traction behavior of two important classes of synthetic lubricants. The effect of viscosity index (VI) improvers on these properties is determined for both hydrogenated polyalphaolefin (PAO) base fluids and chlorotrifluoroethylene oligomer (CTFE) base fluids. A polyalkylmethacrylate VI improver is studied in PAO and a copolymer of vinylidine fluoride and chlorotrifluorethylene is studied in CTFE. The VI improvers exhibited insignificant improvements in the elastohydrodynamic lubrication (EHL) film thickness of both the PAO and CTFE base fluids as determined by comparing the measured film thickness of the VI-improved fluids to the predicted film thickness based on measured pressure-viscosity characteristics and kinematic viscosities determined at low shear rates. 16 refs.},
doi = {10.1080/10402009308983195},
url = {https://www.osti.gov/biblio/5493312}, journal = {ASLE Transactions (American Society of Lubrication Engineers); (United States)},
issn = {0569-8197},
number = ,
volume = 36:4,
place = {United States},
year = {1993},
month = {10}
}