Which of the following is the best example of a thixotropic fluid?
Printing ink is the best example of a thixotropic fluid.
The study of the deformation and flow of fluids and includes the fundamental parameters of elasticity, plasticity, and viscosity. The state of a fluid is characterized by three principal types of behavior depending on the nature of flow:
Time Independent Fluid
Time dependent Fluid
For these fluids, the relation between shear stress and the shear rate depends on the time and flow history of the fluid.
They are classified as being either thixotropic or anti-thixotropic (or rheopectic).
For thixotropic fluids, the shear stress decreases with time for given shear stress. This is due to a structural breakdown of the fluid.
If a cyclic experiment is carried out, a hysteresis loop is formed. Examples include greases, printing inks, jelly, paints, and drilling mud.
In anti thixotropic fluids, the shear stress increases with time for given shear stress. Examples include clay suspensions and gypsum suspensions.