The thermal impedance of a tow-plaster material is determined from the thermal electrical analogy in the dynamic frequency regime. The thermophysical characteristics magnitudes of the material, thermal conductivity and coefficient of thermal diffusivity are relating to shunt and series resistances determined from the results of the study of representations of Nyquist and Bode plots. The study applied to the composite tow-plaster showed it can be used as a good thermal insulator.

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