## ABSTRACT

Keywords ..................................................................................................239 References .................................................................................................239

A solid-phase polymers deformation description is always in the center of attention. Models, considering the indicated polymers as homogeneous (uniform) viscoelastic body or taking into consideration structure heterogeneity on the basis of “effective homogeneity” hypothesis are known. This hypothesis assumes the possibility of heterogeneity consideration with the help of one effective elasticity modulus introduction [1]. Both approaches result to multiparameter integral models, the application of which in practice is difficult enough, particularly in the range of finite strains. Such models complexity is predetermined to a considerable extent by nonlinear hereditary elasticity calculus formal application, which is assumed as an obligatory one at polymer materials deformation analysis [2]. The first from the described approaches was used for polyethylenes and nanocomposites on its basis, filled with ogranoclay, creep processes description [3, 4].