N. B. Uriev, Yu. S. Svistunov, A. N. Potapov, and V. A. Starikov
Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia
e-mail: Uriev@phyche.ac.ru
Received March 29, 2007
Abstract—Total flow curves of the suspensions of modified (methylated) nanodispersed Aerosil (mean particle
size is 40 nm) in Vaseline oil with concentrations of 2–7 wt % are recorded under quasi-equilibrium conditions.
The behavior of these structured nanodisperse systems in the range of extra low shear rates (10–6
10–3 s–1) is
studied in detail. In this range of shear rates, the effect of an increase in the rise of effective viscosity with
increasing shear stress is revealed for concentrated Aerosil suspensions for the first time.
DOI: 10.1134/S1061933X08010195
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