Monday, November 1, 2010

Thixotropy:

Thixotropy is characterized by they fact that the rate of shear at any given shearing stress can vary depending on weather the rate of shear is increasing or decreasing. It is a measure of the breakdown and rebuilding of the structure of the system. This system contains a structural network of colloidal particles. At rest, it may produce the rigidity of the system, but when disrupted shear, the system beings to flow. Upon removal of shear stress, the structure begins to reform.

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