期刊
TRIBOLOGY INTERNATIONAL
卷 183, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2023.108412
关键词
Fluorinated graphene; Soluble starch; Shear exfoliation; Water-based lubrication
In this study, a hybrid additive system consisting of soluble starch (SS) and physically modified fluorinated graphene (FG) was designed to meet the future demand for water-based lubrication. The modified FG nanosheets with amphiphilicity were obtained through high-speed shear exfoliation, significantly improving the load-bearing and boundary lubrication performances of the water-based lubricant. SS further enhanced the friction-reduction and boundary film formation performances, especially during the running-in period. At the best ratio, the hybrid lubricant synergistically reduced the friction coefficient and wear rate by around 90%.
In this study, a hybrid additive system of soluble starch (SS) and physically modified fluorinated graphene (FG) with excellent friction-reduction and anti-wear properties was designed to meet the future demand for waterbased lubrication. The modified FG nanosheets with amphiphilicity were obtained from the high-speed shear exfoliation of fluorinated graphite with surfactants. The modified FG significantly improves the load-bearing and boundary lubrication performances of the water-based lubricant via forming boundary lubricating film, while SS further enhances the friction-reduction and boundary film formation performances, especially during the running-in period. At the best ratio (0.3 wt% FG and 0.6 wt% SS), the hybrid lubricant synergistically reduces the corresponding friction coefficient and wear rate by around 90%.
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