Аннотация:The stress–strain properties of the isotropic and rolled composites based on polyethylene (PE) and rubber particles are studied. The mechanical properties are determined at 20, 50, and 70 °С. It is shown that one of the factors ensuring the maintenance of plasticity of the filled rolled PE is an increase in the crack resistance of the matrix, which is manifested in the changes of the forms of defects that arise during tension. At the rubber content no more than 20 wt %, a temperature rise leads to a change in the mechanism of the composite fracture from brittle to ductile. It is shown that the positive effect of rolling of the rubber plastics is retained during their testing at elevated temperatures