What is THIXOTROPY?

Rheological property of a fluid where applied stress lowers viscosity, which returns to normal when the stress is released, and of some colloidal materials particularly in geology, clays and fine sediments to change from a gel to a sol when under stress and to revert to high viscosity at low stress. The clay thus strengthens when undisturbed. Property of many polymer fluids and mixtures eg ketchup, and widely used in paints. Fluids which behave in the opposite way are known as rheoyectic.


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