Sulfurised isobutylene (T321) was filled into the cavity of multi-walled carbon nanotubes (MWCNTs) in order to synthesise MWCNT/T321 composites. Tribological properties of water-based nanofluids with composites as additives were systematically investigated using a four-ball configuration. The results showed that MWCNTs were filled by T321 with a filling rate of 22.5%. The nanofluids prepared by the composites produced a significantly lower coefficient of friction and wear loss, in comparison with the lubricants containing only MWCNTs or T321. Such improvement was attributed to the fact that during sliding the T321 filled into composites was released onto the rubbing surface to generate a lubricating film, resulting in a low resistance to shear, whilst the MWCNTs served as nano-bearings on the formed lubricating film.

中文翻译：

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硫化异丁烯填充多壁碳纳米管复合材料制备水基纳米流体的摩擦学性能

将硫化异丁烯 (T321) 填充到多壁碳纳米管 (MWCNT) 的空腔中以合成 MWCNT/T321 复合材料。使用四球配置系统地研究了以复合材料作为添加剂的水基纳米流体的摩擦学性能。结果表明，多壁碳纳米管被T321填充，填充率为22.5%。与仅含有 MWCNT 或 T321 的润滑剂相比，由复合材料制备的纳米流体产生的摩擦系数和磨损损失显着降低。这种改善归因于这样一个事实，即在滑动过程中，填充到复合材料中的 T321 被释放到摩擦表面上以产生润滑膜，导致剪切阻力低，而 MWCNTs 在形成的润滑膜上充当纳米轴承。