Abstract
The suspensions and emulsions are important products and raw materials for various industrial production and processing branches. The knowledge concerning the rheological properties of such substances is of key importance for many manufacturing processes. Many dependences can be found within the literature but there is lack of model that takes into account the influence of inner phase concentration, share rate, and diameters of the dispersed phase particles on a viscosity of these systems. The presented work goal was to obtain a rheological equation containing the modified form of Peclet number, which would provide the relation between the viscosity, the volume fraction, and the shear rate. The theory of Kozeny-Carman, which transforms the granular structure into a bunch of the torturous capillary tubes, was the base of this model. The proposed model has been verified for data available in the literature and for the data obtained in authors own experiments.
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Sęk, J.P., Błaszczyk, M.M. & Przybysz, Ł. A rheological model to predict viscosity of dispersions as a function of the modified Peclet number. Korea-Aust. Rheol. J. 31, 81–88 (2019). https://doi.org/10.1007/s13367-019-0009-2
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DOI: https://doi.org/10.1007/s13367-019-0009-2