Yu Jiamin, Wu Junhao, Jiao Chengcheng, Chen Huanyi, Ruan Xinxin, Li Wei, Gong Genxiang, Yu Jinhong, Nishimura Kazuhito, Jiang Nan, Cai Tao, Wu Zhisheng
Department of Materials and Chemical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China.
State Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
Materials (Basel). 2025 Apr 30;18(9):2052. doi: 10.3390/ma18092052.
As an emerging two-dimensional nanomaterial, diamond nanosheets have the advantages of high hardness and chemical stability; exhibiting good tribological properties when used as lubricant additives. However, the dispersion stability of nanomaterials as additives in lubricants remains a significant challenge. In this study, fluidized and functionalized diamond nanofluids were prepared by grafting polyether amine on the surface of diamond nanosheets. By changing the state of diamond nanosheets, this material not only improved its own lubrication property, but also improved its dispersion in the lubricant. The friction test results demonstrated that the friction coefficient was reduced by 66.9% and the wear rate was reduced by 81.8% with the addition of 3 wt% of diamond nanofluid in water-glycol solution. This enhancement of lubricating properties is related to the excellent film-forming properties of diamond nanofluids during the tribology. This that fluidized 2D diamond nanosheets have excellent lubricating properties and can significantly improve the friction properties of lubricants as additives.
作为一种新兴的二维纳米材料，金刚石纳米片具有硬度高和化学稳定性好的优点；用作润滑剂添加剂时表现出良好的摩擦学性能。然而，纳米材料作为润滑剂添加剂的分散稳定性仍然是一个重大挑战。在本研究中，通过在金刚石纳米片表面接枝聚醚胺制备了流化和功能化的金刚石纳米流体。通过改变金刚石纳米片的状态，这种材料不仅提高了自身的润滑性能，还改善了其在润滑剂中的分散性。摩擦试验结果表明，在水-乙二醇溶液中添加3 wt%的金刚石纳米流体时，摩擦系数降低了66.9%，磨损率降低了81.8%。这种润滑性能的提高与金刚石纳米流体在摩擦学过程中优异的成膜性能有关。这表明流化的二维金刚石纳米片具有优异的润滑性能，作为添加剂可以显著改善润滑剂的摩擦性能。
