Rheological properties of polymer materials with different types of structures based on EVA and organic filler

A study on the effect of the structure of disperse-filled polymer composite materials (DFPCM) based on EVA grade 11306-075 and rice straw powder (RSP) with a particle diameter of 250 μm on the complex of rheological properties has been carried out.For the first time, a quantitative relationship of generalized parameters, type of structure and lattices with the rheological properties of dispersed systems based on EVA + RSP has been determined. It has been established that during the processing of DFPCM with the DS, LFS, and MFS-1 structure types by traditional methods (extrusion, injection molding, etc.), there are practically no technological difficulties. Systems with the type of structure MFS-2 and HFS have an increased viscosity (~7–15 times) in comparison with unfilled EVA; therefore, they cannot be processed.The results of the experiments and the approach developed in this work makes it possible to design DFPCM compositions with adjustable structural parameters and a set of properties, as well as to choose methods and technological parameters for processing them into products with a given shape, configuration, and dimensions.