shear thinning


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shear thinning

[′shir ‚thin·iŋ]
(fluid mechanics)
Viscosity reduction of non-Newtonian fluids (for example, polymers and their solutions, most slurries and suspensions, lube oils with viscosity-index improvers) that undergo viscosity reductions under conditions of shear stress (that is, viscometric flow).
References in periodicals archive ?
The researchers observed a shear thinning behavior in samples of both treatments.
For example, both samples show shear thinning behavior, demonstrated by the complex viscosity decreasing as the shear rate or frequency increases.
7] showed on plastisol formulations the existence of a Newtonian plateau at very low shear rates, followed by a shear thinning behavior and a second Newtonian plateau at intermediate shear rates (around 100 [s.
This is called shear thinning, and the rate of deformation of the paint as it is sheared is called the shear rate (units are reciprocal seconds, [s.
The emulsions having 2- 8 wt % contents of Polyglycerol polyricinoleate (PGPR) indicated that an increase in shear rate increased the shear stress non-linearly and decreased the shear viscosity showing shear thinning behavior up to some extent (Figs.
Innate resins exhibit high-melt strength for excellent bubble stability and greater shear thinning to enable reduced extruder amperage and melt temperature.
A common example of how materials react to shear thinning includes wall paint; paint shear thins during the brush or roller stroke for ease of flow and to fill imperfections, but quickly thickens to prevent runs and drips.
In this section, we examine the effect of fluid viscosity, including shear thinning, on film uniformity under gap disturbances.
DUO-VIS has the unique ability to produce a fluid that is highly shear thinning while developing a true gel structure.
Since all the values of n produced by the three fluid models are less than 1, then it is a shear thinning fluid or so-called, pseudo plastic fluid.
Effects of shear thinning for Gelatin reactive formulation is shown in fig.