Abstract
The results are discussed of rheological studies of coal tars with different concentrations of substances insoluble in toluene at periodical, steady-state and combined periodical-steady shear deformations in a wide range of deformation frequencies, rates and amplitudes in the temperature region from 223 to 333 K. The temperatures of structural and mechanical glassingT g , the activation energies of viscous flow and initial viscoelastic constants of these systems have been determined. Temperature and temperature-frequency dependencies of dynamical parameters have been obtained, the pre-steady-state and the steady-state flow modes of permanent deformation have been studied and thixotropic parameters have been evaluated at the combined action of vibration and permanent deformation.
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Yanovsky, Y.G., Zhdanyuk, V.K., Zolotarev, V.A. et al. The peculiarities of the rheological behaviour of coal tars. Rheol Acta 27, 298–310 (1988). https://doi.org/10.1007/BF01329746
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DOI: https://doi.org/10.1007/BF01329746