ФОРМУВАННЯ КОМПОЗИТУ ПРИ ВАРІЮВАННІ ДИСПЕРСНОСТІ НАПОВНЮВАЧА ТА ВИДУ ЗВ’ЯЗУЮЧОГО

Abstract

The aim of this study was to investigate polymer composites based on andesite of different dispersion as a filler with different types of polymer matrix for further development of production technology. Varying the types and concentration of mineralfillers of different genesis, including volcanic rocks, is one of the ways to modify polymer composite materials. The choice of filler type is an important factor influencing the structure formation and properties of the resulting composite. At the same time, varying the particle size distribution of the filler and its quantitative ratio with the matrix makes it possible to adjust the performance properties of the resulting composite materials within a wide range. In addition, the surface properties of thefiller particles and the chemical nature of the polymer matrix are of great importance. The possibility of expanding the range and increasing the operational reliability of composite materials when using new types of natural raw materials determine therelevance of this research. To achieve this goal, a set of modern methods of physical and chemical analysis and standardised testing of materials was used in the study. The object of the study was composite materials using andesite screenings as a fractionated filler and copolymers as a matrix. Changes in the physical and mechanical properties of the composites were determined by varying the content (55-85 wt.%) and granulometry of the filler and the type of polymeric binder. According to the test results, it is possible to adjust the parameters of the properties of polymer composites, while the range of their changes is as follows: water absorption 2.2-14.9 %, density 1.24-1.96 g/cm3, abrasion 0.005-0.1 g/cm2, elastic modulus 41-83 Pa/mm2, which indicates the prospects of manufacturing and practical use of the obtained wear-resistant composites in construction