Study on Rheological Properties of Different Brands of Grease

Abstract

The rheological properties of seven kinds of lithium greasewere tested by Anton-paar MCR 302 rotational rhemeter, and the Herschel-Bulkley rheological equation τ = τγ + νγn gives the calculation formula of apparent viscosity and analyzes its rheological porperties. The results show that the rheological property of lubricating grease decreases with the increase of shear rate and decreases with the increase of temperature. Different kinds of lubricating grease show different elastoplasticity under the same experimental conditions, and composite lithium-based grease shows the best performance.