Quantifying Shear Thickening Behaviour Using the Power Law Model on a Rotational Rheometer
Application Note Jun 16, 2015
Malvern Instruments Limited
While most suspensions and polymer structured materials are shear thinning, some materials can also show shear thickening behavior where viscosity increases with increasing shear rate or shear stress. This phenomenon is also often referred to as dilatancy, and although this refers to a specific mechanism for shear thickening the terms are often used interchangeably. In most cases, shear thickening occurs over a decade of shear rates and there can be a region of shear thinning at lower and higher shear rates.