High lubricity and electrical responsiveness of solvent-free ionic SiO2 nanofluids | |
Guo YX(郭月霞)1,2; Zhang LG(张利刚)1; Zhang G(张嘎)1,3; Wang DA(王道爱)1![]() ![]() ![]() ![]() | |
刊名 | Journal of Materials Chemistry A
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2018 | |
卷号 | 6期号:6页码:2817-2827 |
ISSN号 | 2050-7488 |
DOI | 10.1039/c7ta09649f |
英文摘要 | Solvent-free ionic nanofluids with a core–shell structure were successively synthesized via functionalizing silica nanoparticles with a charged corona and ionically tethering with oligomeric chains as a canopy. It was demonstrated that the as-synthesized nanofluids were endowed with outstanding dispersion stability and fluidity. Importantly, when used as a lubricant and additive, the nanofluids showed excellent frictionreducing and antiwear properties. That is, blending even a small fraction of nanofluids into polyethylene glycol base oil dramatically reduced the friction and wear of a steel–steel contact. Depending on the specific shell structures, the lubricity of the nanofluids exhibited a responsive characteristic to electrical potential. The friction coefficients can be adjusted by loading or unloading the external power and changing the direction of the electrical potential. Formation of a unique double electric layer consisting of both organic and inorganic materials during the friction was proposed, which can be essential for yielding robust lubrication of the adsorption film. Moreover, a nanostructured tribofilm comprising a significant fraction of silica and tribo-chemical products of the organic layers was identified, and it was believed to be significant in improving the boundary lubrication performance. |
学科主题 | 纳米润滑研究 |
资助项目 | 聚合物自润滑复合材料研究组 ; 材料表面界面研究组 |
语种 | 英语 |
WOS记录号 | WOS:000424466300043 |
资助机构 | the National Natural Science Foundation of China (Grant no. 51475446) ; the Chinese “Thousand Youth Talents Plan” project |
内容类型 | 期刊论文 |
源URL | [http://ir.licp.ac.cn/handle/362003/22970] ![]() |
专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 兰州化学物理研究所_青岛研发中心/青岛市资源化学与新材料研究中心 |
通讯作者 | Zhang G(张嘎) |
作者单位 | 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 73000 Lanzhou, China. 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.Qingdao Center of Resource Chemistry & New Materials, Qingdao 266071, China |
推荐引用方式 GB/T 7714 | Guo YX,Zhang LG,Zhang G,et al. High lubricity and electrical responsiveness of solvent-free ionic SiO2 nanofluids[J]. Journal of Materials Chemistry A,2018,6(6):2817-2827. |
APA | Guo YX.,Zhang LG.,Zhang G.,Wang DA.,Wang TM.,...&Zhang G.(2018).High lubricity and electrical responsiveness of solvent-free ionic SiO2 nanofluids.Journal of Materials Chemistry A,6(6),2817-2827. |
MLA | Guo YX,et al."High lubricity and electrical responsiveness of solvent-free ionic SiO2 nanofluids".Journal of Materials Chemistry A 6.6(2018):2817-2827. |
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