期刊
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
卷 39, 期 12, 页码 1742-1751出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01932691.2018.1461648
关键词
Dispersibility; MoS2; nanosheets; oleic acid; tribological properties
资金
- Talent Introduction Fund of Yangzhou University
- Key Research Project-Industry Foresight and General Key Technology of Yangzhou [YZ2015020]
- Innovative Talent Program of Green Yang Golden Phoenix [yzlyjfjh2015CX073]
- Yangzhou Social Development Project [YZ2016072]
- Jiangsu Province Six Talent Peaks Project [2014-XCL-013]
- Jiangsu Province Science and Technology Support Project [BE2014613]
- Jiangsu Industrial-academic-research Prospective Joint Project [BY2016069-02]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
In this paper, the self-made two-dimensional MoS2 nanosheets with five-layer thickness were attempted to be modified with oleic acid (OA) with a simple one-step route, denoted OA-MoS2. The OA-MoS2 nanosheets were confirmed by a series of characterizations. The results showed that OA molecules could chemically seal MoS2 nanosheets through C-S bonds, which significantly improved the dispersibility and stability of MoS2 nanosheets in base oil. The OA-MoS2 nanosheets possessed better dispersibility in base oil and could maintain the stability in oil up to 96 h. Furthermore, the tribological properties of OA-MoS2 nanosheets as an additive in base oil were completely studied through a ball-on-ball configuration four-ball testing machine. The experimental results showed that the average friction coefficient and average wear scar diameter of the 0.04 wt.% OA-MoS2-based oil were decreased by about 41.2% and 17.1% as compared to base oil, respectively. In addition, its extreme pressure performance increased by about 13.0%. These results indicated that OA-MoS2 nanosheets exhibited better antifriction, antiwear and extreme pressure abilities in oil due to the desirable solved dispersibility. [GRAPHICS] .
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