Design of liquid composite materials for shielding electromagnetic fields

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.231479

Keywords:

electromagnetic field, shielding coefficient, magnetic permeability, dielectric permeability, composite materials

Abstract

This paper reports the principles of design and the examined protective properties of liquid materials for shielding the electric, magnetic, and electromagnetic fields over a wide frequency range. The materials were made on the basis of iron ore concentrate and a pigment additive, with water-dispersed and geopolymer paints used as a matrix. The tests of protective properties for the electrical and magnetic components of the electromagnetic field of industrial frequency showed that the electric field shielding coefficients at a concentration of the screening substance of 15−60 % (by weight) equaled 1.1−8.6; magnetic field – 1.2−5.3. The shielding coefficients of the material based on a water-dispersed paint are lower than those of a geopolymer one, which can be explained by the oxidation of an iron-containing component and a decrease in electrical conductivity. The shielding coefficients of the electromagnetic field with a frequency of 2.45 GHz are 1.2−7.9. The highest coefficients are inherent in the material with filler made of iron ore concentrate and titanium-containing pigment powder in a ratio of 1:1.

To design materials with the required (predictable) protective properties, the relative magnetic, dielectric permeability of materials was calculated. It is shown that the obtained data are acceptably the same as the results from direct measurements of magnetic and dielectric permeability and could be used to calculate the wave resistance of the material and the predicted reflection coefficient of electromagnetic waves. Thus, there is reason to assert the need to build a database on the frequency dependence of effective magnetic and dielectric permeability in order to automate the design processes of composite materials with predefined protective properties.

Author Biographies

Valentyn Glyva, National Aviation University

Doctor of Technical Sciences, Professor

Department of Civil and Industrial Safety

Volodymyr Bakharev, Kremenchuk Mykhailo Ostrohradskyi National University

Doctor of Technical Science, Associate Professor, Dean

Faculty of Natural Sciences

Natalia Kasatkina, National University of Food Technologies

Doctor of Technical Science, Head of Department

Department of Doctoral and Postgraduate Studies

Oleg Levchenko, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Doctor of Technical Sciences, Professor, Head of Department

Department of Labor protection, Industrial and Civil Safety

Larysa Levchenko, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Doctor of Technical Sciences, Associate Professor

Department of Automation of Projection of Power Processes and Systems

Nataiia Burdeina, Kyiv National University of Construction and Architecture

PhD, Associate Professor

Department of Physics

Sergii Guzii, National University of Civil Defence of Ukraine

PhD, Senior Researcher

Department of Fire Prevention in Settlements

Olena Panova, Kyiv National University of Construction and Architecture

PhD, Associate Professor, Head of Department

Department of Physics

Oksana Tykhenko, National Aviation University

PhD, Associate Professor

Department of Ecology

Yana Biruk, Kyiv National University of Construction and Architecture

Assistant

Department of Physics

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Published

2021-06-18

How to Cite

Glyva, V., Bakharev, V., Kasatkina, N., Levchenko, O., Levchenko, L., Burdeina, N., Guzii, S., Panova, O., Tykhenko, O., & Biruk, Y. (2021). Design of liquid composite materials for shielding electromagnetic fields. Eastern-European Journal of Enterprise Technologies, 3(6 (111), 25–31. https://doi.org/10.15587/1729-4061.2021.231479

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Section

Technology organic and inorganic substances