This document gives information on an interlaboratory comparison for the determination of the time-dependent structural change (thixotropy) using rheological test methods. Thixotropy is the reversible, time-dependent decrease of shear viscosity η at a constant shear rate γ˙or shear stress τ.
This document provides examples of fields of application, in which important material properties can be characterized by the thixotropy. These fields of application include:
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effectiveness of rheological additives and thixotropic agents, respectively;
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stability of the structure at rest (e.g. behaviour when starting to pump);
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wet film thickness after processing;
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levelling and sagging behaviour (e.g. without brushmarks or sag formation);
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orientation of effect pigments.
