Splash of an elastic liquid as a rheological test of polymer solutionsстатья
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Дата последнего поиска статьи во внешних источниках: 6 декабря 2018 г.
Аннотация:The pulse radial outflow from a gap between two rapidly approaching disks is used to study the rheological properties of elastic liquids under the extremum-strain regime (high strain rate and stretching degree). The theoretical description for the radial outflow of a liquid is constructed within the framework of the viscoelastic rheological model. Experiments on the high-velocity throwing of the aqueous solutions of high-molecular-mass poly(ethylene oxide) with concentrations of 1, 2, and 4% are performed. A comparison of the theoretical predictions with the experimental data makes it possible to determine the rheological characteristics
of liquids under the extremum-strain conditions. It is found that at high strain rates the elastic modulus grows considerably, while the relaxation time decreases.