Journal
TRIBOLOGY INTERNATIONAL
Volume 160, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2021.107051
Keywords
Polymer; Aqueous lubrication; Wear mechanism
Categories
Funding
- National Natural Science Foundation of China [51405478]
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This study investigated the tribological properties of PBT nanocomposites enhanced with surface-treated SiO2 aerogel nanoparticles. The results showed that the nanoparticles improved wear-resistance by enhancing transfer behavior, but seawater pressure hindered their transfer due to degradation of adhesion between interfaces.
For friction components served in the deep sea, the application of polymer composites is one of the most effective methods for lubrication failures. In this study, surface-treated SiO2 aerogel nanoparticles were incorporated into the poly(butylene terephthalate) (PBT) matrix. The tribological properties together with mechanical and thermal properties, seawater wettability and absorption of binary nanocomposites were investigated. The results show that SiO2 aerogel nanoparticles enhance the wear-resistance of composites by improving transfer behavior owing to their surface functional groups, small size and porous structure. However, the seawater pressure impedes the transfer of nanocomposites by degrading the adhesion between frictional interfaces, decreasing the cover area, continuity and thickness of transfer film.
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