The behavior of low molecular weight non-Newtonian fl uids (liquid paraffin,
silicone oil, FC70 oil) in which shear thinning is observed at low shear rates is considered.
Over a large range of high shear rates, a behavior similar to the “Newtonian” behavior
is observed, where the shear viscosity is practically constant. An explanation of this
type of “Newtonian” fl ow from the point of view of a structural rheological model is
proposed.