Correlation between System Entropy and Structural Changes in Lubricating Grease

Abstract

Lubricating greases are colloid disperse systems consisting of a base oil and a thickener (additional additives). The lubricant is modeled as a tribological system, and the reaction of a fluid friction stress is investigated. The energetic situation of the volume element is analyzed and the system entropy described. The description of the structural degradation and the used entropy was realized with the help of rheometer tests.

Keywords

• lubricating greases
• structural degradation
• liquid friction
• entropy production