MICROHARDNESS OF SECONDARY POLYOLEFINS AND COMPOSITES ON THEIR BASIS
The indentation method at the micro level has been used to study the physical and mechanical properties of the surface of primary and secondary polyethylene and polypropylene, as well as composites based on them in the presence of rice husks and ultra-high molecular weight polyethylene. It has been established that secondary polymers are characterized by a lower elastic modulus and hardness modulus than the primary analogs on the Martens scales. On the example of the use of rice husks and ultra-high molecular weight polyethylene as fillers, it is shown that by varying the nature of the filler and its content, it is possible to control the physical and mechanical properties of the surface at a micro level in a wide range.