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Study on friction properties of polydopamine modified graphene oxide as lubricant additive.
- Source :
-
Fullerenes, Nanotubes & Carbon Nanostructures . 2022, Vol. 30 Issue 9, p883-895. 13p. - Publication Year :
- 2022
-
Abstract
- In this study, polydopamine-modified graphene oxide (PGO) nanomaterials were prepared based on the self-polymerization of dopamine in a weakly alkaline environment. In the friction experiment, the lubricants with 0.15 wt% PGO nanomaterials have optimal friction properties. Subsequently, X-ray photoelectron spectroscopy (XPS), X-ray energy spectroscopy (EDS), and laser Raman spectroscopy were performed on the wear scar. Compared to pure oil, the friction coefficient was reduced by 31%, and the trace width was reduced by 47.69%. In addition, molecular dynamics simulations showed that PGO has the lowest diffusion coefficient among n-hexadecane and the interaction energy between PGO and n-hexadecane molecules was the largest, and oil droplets containing PGO exhibited the best adsorption performance on the surface of the Si3N4/GCr15. The results showed that compared with other additives, PGO as a lubricant additive can play a significant role in reducing friction and anti-wear. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1536383X
- Volume :
- 30
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Fullerenes, Nanotubes & Carbon Nanostructures
- Publication Type :
- Academic Journal
- Accession number :
- 158010236
- Full Text :
- https://doi.org/10.1080/1536383X.2022.2034790