Effects of polymers concentration on EHL film-forming in point contacts
| Autor: | Xiaoyang Chen, Liangwei Qiu, Fakai Dong |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
High concentration Materials science Shear thinning Base (chemistry) Mechanical Engineering 020206 networking & telecommunications 02 engineering and technology Polymer Surfaces Coatings and Films Point contact Light intensity 020303 mechanical engineering & transports General Energy 0203 mechanical engineering chemistry 0202 electrical engineering electronic engineering information engineering Lubricant Composite material Volume concentration |
| Zdroj: | Industrial Lubrication and Tribology. 73:436-442 |
| ISSN: | 0036-8792 |
| DOI: | 10.1108/ilt-07-2020-0263 |
| Popis: | Purpose This paper aims to experimentally investigate the film-forming capability of base oils containing poly-methacrylate (PMA) and poly-isobutene (PIB), in a point contact under pure rolling. Design/methodology/approach By using the relative light intensity method, the film thickness is calculated from the interferometer images which are captured by multiple-contact optical elastohydrodynamic lubricated test rig. Findings The test results reveal that polymers, both PMA and PIB, have a significant contribution to the film-forming capability of base oils and the film thickness increases with concentration. The forming-film capabilities for PMA and PIB in base oils are similar at low concentration, while PIB gives a higher film thickness than PMA at high concentration. Shear-thinning phenomenon are observed in all polymer-based oils. Originality/value The polymer usually as an additive is added into the low viscosity base oils to improve the properties of lubricant oil. This paper reports the lubricated properties of PMA and PIB with different concentrations in base oils and to evaluate their functional mechanism in a point contact. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-07-2020-0263/ |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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