STATE DIAGRAMS AND THE GRUNEISEN FUNCTION OF SOME POLYMERIC MATERIALS IN EXTREME CONDITIONS
The dependence of the Gruneisen function of polyethylene, polymethylmethacrylate and composite material based on polyethylene and rubber from the temperature, density and effective porosity on different modern models was calculated for the first time. Diagrams of their state under extreme conditions are constructed. It is established that at high dynamic effects, in the studied polymeric materials, various physico-chemical transformations occur at the shock front. Based on the generalization of the obtained data on the dynamic compression of a composite on the basis of polyethylene and butadiene rubber, it was possible to construct a shock adiabat for these materials.