HPDE-clay composites materials prepared by melting compounding have discrete change in mechanical physical properties in comparison to the initial HPDE even when a small amount of clays is introduced. It is presented the results of the studying of the structure, the properties and morphology of HPDE- clay composites. The E modulus is increased from 702 MPa in the initial to MPa, the tensile strength is raised from to MPa (most 3 times) and solvent permeability is decreased with 1% clay. A rise in the nanoscale clay leads to reduction in the properties of the HPDE-clay composites. By X-ray diffraction, composites with 1% clay have a rise of cell constant from to nm. However, composites have more clay content cell indexes decrease dowto nm of 5% clay.
