Filled rubbers are widely used in the tire industry. Their dynamic mechanical properties, such as modulus and hysteresis, have great effect on the automobile performance. This paper focuses on the mechanism of the energy dissipation of the filled rubber. Three loss mechanisms are taken into account. The first one is generally known as the interior friction of the macromolecular chains and segments; the second one is the hydrodynamic effect, which may be reflected not only in concentration but in scale effect. These two mechanisms contribute to the extreme loss modulus. The last mechanism is related to the strain amplitude and distance distribution of the filler-filler linkages. By application of the proposed micro-mechanism, some published results of the strain dependence of the loss modulus are interpreted.
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