Knowing how magnetic coatings behave at low stresses
and high shear rates is important during application. The
high shear rate viscosity determines pumping pressures and
coating roll separating forces and torques. And the yield
stress is critical for leveling, as well as pick-out in rotagravure
coating, and thickness uniformity in spin coating. The yield
stress may also affect drying behavior and cause flow
instability. The shear modulus is a measure of the magnetic
forces between particles, their topology, and the extent they
are orientable by an external magnetic field