Archive > 2017 > October 2017 > A Model for Shear Degradation of Lithium Soap Grease at Ambient Temperature

A Model for Shear Degradation of Lithium Soap Grease at Ambient Temperature - October 2017

Yuxin Zhoua, Rob Bosmana, Piet M. Lugt

The article "A Model for Shear Degradation of Lithium Soap Grease at Ambient Temperature" appeared in the October 2017 issue of Power Transmission Engineering.

Summary
In this study the mechanical shear degradation of lithium-thickened grease was evaluated using an in-house-developed aging rig and a commercial rheometer. It was found that this grease loses its original consistency during aging and shows a two-phase aging behavior. In the first phase, primarily reorientation and breakage of the thickener network take place, resulting in a progressive drop in the grease's rheological properties. After this, the aging is dominated by the breakage of smaller fiber fragments and the grease degrades at a much slower rate.

Keywords
grease, lubrication

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