Abstract While most commercial greases are used to prevent wear and tear in machinery, many specialized applications require electrically conductive grease. Applications include, but are not limited to, use in next generation electric vehicles (NGEVs), superb electric motor bearing protection, and electrical contact improvement. Using recently new invented methods, electrically conductive greases have been prepared. Petro-Canada N650HT oil with 7.5 wt% hydroxyl functionalized multiwall carbon nanotubes (MWNT-OH), yielded a surprising resistivity of 22.4 Ω cm, compared to the resistivity of 7880 Ω cm of an almost identical sample made with multiwall nanotube (MWNT). Another sample, 75 % Glycerol, 25 % Water, 4.5 wt% MWNT-OH, yielded the lowest resistivity of all samples measured, at 10.0 Ω cm. Hydrogen bonding is believed to be attributed to the best performing samples. The introduction of hydrogen bonding in any form into the grease increases electrical conductivity. This finding can be extended with further research to other nanomaterials with functional groups like OH, COOH, F, and NH.

中文翻译：

---

具有高导电性的碳纳米管润滑脂

摘要 虽然大多数商业润滑脂用于防止机械磨损，但许多专业应用需要导电润滑脂。应用包括但不限于用于下一代电动汽车 (NGEV)、卓越的电动机轴承保护和电接触改进。使用最近发明的新方法，已经制备了导电油脂。与使用多壁纳米管 (MWNT) 制成的几乎相同样品的电阻率 7880 Ω cm 相比，具有 7.5 wt% 羟基官能化多壁碳纳米管 (MWNT-OH) 的加拿大石油 N650HT 油产生了惊人的 22.4 Ω cm 电阻率。另一个样品，75% 的甘油，25% 的水，4.5% 的 MWNT-OH，在所有被测样品中的电阻率最低，为 10.0 Ω cm。氢键合被认为归因于性能最好的样品。在润滑脂中引入任何形式的氢键都会增加导电性。这一发现可以通过进一步研究扩展到其他具有 OH、COOH、F 和 NH 等官能团的纳米材料。