ABSORBERS OF ELECTROMAGNETIC RADIATION BASED ON SHUNGITE SPECIES

Abstract

In recent decades, the industries have experienced rapid development of various technologies directly or indirectly related to the emission of electromagnetic energy into the environment. The number of emitting technical means in production and in everyday life is increasing. At present, there are different ways, methods and materials to reduce the effects of electromagnetic radiation. The properties of absorbers of electromagnetic radiation (EMR), formed on the basis of domestic natural material of shungite species from the deposit of the mining company "Koksu", Almaty region, are considered. The results of the interaction of EMR with samples of materials of absorbers and the dependence of the transmission coefficients on the angle of incidence of electromagnetic waves (EMW) in the frequency range 5.3-10.6 GHz are obtained. Research in these frequency ranges is crucial and relevant with the development and transition in the future of systems and mobile cellular networks of promising generations to higher radio frequency ranges. The use of powdered shungite for the creation of EMR absorbers in ultra-high-frequency radiation (UHFR) range has not yet been studied enough. Technological values of the selected EMR absorbers in comparison with other geomaterials: strength of stone-like shungite species, high indicators of density (for example, 2.61 g/cm3 – “TS” brand; 2.49 g/cm3 – “TK” brand) and mechanical resistance, high thermal and chemical stability, low cost, good mixing with binders. The test samples provide a decrease of EMR level due to the presence of absorption effects.