Friction and Wear Reduction by Boundary Film-Forming Viscosity Index Improvers

962037

10/01/1996

Event
1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition
Authors Abstract
Content
Recent work by the authors has indicated that some types of viscosity index improver polymers can form thick boundary films in lubricated contacts. These films appear to result from the adsorption of molecules of polymer on metal surfaces to produce layers, about 20 nm thick, having higher polymer concentration and thus higher viscosity than the bulk solution.
In the current paper it is shown that these VII boundary films are able to separate rubbing surfaces in both rolling and sliding contacts and that they make a significant contribution towards reducing friction and wear at temperatures up to at least 140°C. The mechanism by which these polymers reduce friction and wear is elucidated.
Meta TagsDetails
DOI
https://doi.org/10.4271/962037
Pages
27
Citation
Gunsel, S., Smeeth, M., and Spikes, H., "Friction and Wear Reduction by Boundary Film-Forming Viscosity Index Improvers," SAE Technical Paper 962037, 1996, https://doi.org/10.4271/962037.
Additional Details
Publisher
Published
Oct 1, 1996
Product Code
962037
Content Type
Technical Paper
Language
English