Han Xiao, Yong Huaisong, Sun Dazhi
Department of Materials Science and Engineering and Shenzhen Key Laboratory of Nanoimprint Technology, Southern University of Science and Technology, Shenzhen, 518055, China.
Nanoscale Res Lett. 2017 Sep 20;12(1):542. doi: 10.1186/s11671-017-2315-2.
Two-dimensional (2D) inorganic layered nanoplatelets exhibit superior lubricating properties in both solid states and oil dispersions. In this paper, we have systematically investigated the effects of surface and interlayer modifications on the tribological performance of layered α-zirconium phosphate (ZrP) nanoplatelets in mineral oil. The pristine layered ZrP nanoplatelets were first reacted with silanes of different alkyl chains to achieve outer surface modifications, followed by intercalation with different alkyl amines to alter the interlayer spacing. Friction and anti-wear studies on ZrP nanoplatelets with various modifications in mineral oils suggest that a longer alkyl chain on the outer surfaces along with a small increase in interlayer spacing would lead to a better tribological behavior especially under a relatively heavy load condition. Our results illustrate the ability of tuning the tribological properties of 2D layered nanoplatelets in oils by varying their surface and interlayer functionalities and would be helpful for understanding the underlying tribological mechanisms of nanolubricating oils containing 2D layered nanoplatelets. Graphical abstract ᅟ.
二维（2D）无机层状纳米片在固态和油分散体中均表现出优异的润滑性能。在本文中，我们系统地研究了表面和层间改性对层状α-磷酸锆（ZrP）纳米片在矿物油中的摩擦学性能的影响。首先使原始的层状ZrP纳米片与不同烷基链的硅烷反应以实现外表面改性，然后用不同的烷基胺进行插层以改变层间距。对在矿物油中具有各种改性的ZrP纳米片的摩擦和抗磨研究表明，外表面上较长的烷基链以及层间距的小幅增加将导致更好的摩擦学行为，特别是在相对重负荷条件下。我们的结果说明了通过改变二维层状纳米片的表面和层间功能来调节其在油中的摩擦学性能的能力，这将有助于理解含二维层状纳米片的纳米润滑油的潜在摩擦学机制。图形摘要ᅟ。
