The rheological behavior of some polyethylene melts is considered within the framework of a structural rheological model. Various variants of the kinetic model that describe different parts of rheological curves are presented. It is shown that the dependence of dynamic moduli on the frequency of shear oscilla-tions is described by rheological equations with three or two coefficients, sepa-rately for the interval of high frequencies and the interval of low frequencies. The proposed rheological equations are alternative to the equations based on the relaxation spectrum. Thus, there is no need for mechanical models of the spring and damper to explain the rheological behavior of structured systems.
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