Rotational and oscillatory methods for determining the rheological behaviour of coatings, paints and inks

摘要

Understanding rheological properties of coatings, paints and inks is of great importance for manufacturing, processing, industrial application by practical users and curing / hardening. Simple rotational experiments like controlled shear stress (CS) tests and controlled shear rate (CR) tests give only information about viscosity values, the "apparent" yield point and thixotropic effects. Since it is known for many years that these values are not sufficient to describe the complex visco-elastic properties of paints, the use of more sensitive rheometers is recommended for a better rheological characterization.