Abstract The tribo-performance of Lithium-based synthetic greases based on poly-alpha olefin as a base-stock and Polytetrafluoroethylene particles (4 wt%) of different sizes viz. 50 nm, 6 μm, 9 μm and 12 μm and shapes as a functional additive were developed and tribo-investigated. Tribo-results revealed that the smaller the size, better was the performance in general. However, there was a strong competition between small particles 6 μm and nano-particles (50 nm) for best performance. The 6 μm particles showed slightly better performance, mainly because of their spherical shape. It was concluded that both the size and shape of particles were the controlling factors.

中文翻译：

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含 PTFE 颗粒作为添加剂的锂基润滑脂的性能特性：控制参数大小或形状？

摘要 以聚 α 烯烃为基础油料和不同尺寸的聚四氟乙烯颗粒 (4 wt%) 的锂基合成润滑脂的摩擦性能，即。开发和摩擦研究了 50 nm、6 μm、9 μm 和 12 μm 以及作为功能添加剂的形状。摩擦结果显示，尺寸越小，总体性能越好。然而，为了获得最佳性能，6 μm 小颗粒和纳米颗粒 (50 nm) 之间存在着激烈的竞争。6 μm 颗粒表现出稍好的性能，主要是因为它们的球形。结论是颗粒的大小和形状都是控制因素。