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The composite facing material for electromagnetic felds shielding
Author(s) -
Valentyn Glyva,
Larysa Levchenko,
Olena Panova,
Oksana Tykhenko,
M. M. Radomska
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/907/1/012043
Subject(s) - electromagnetic shielding , materials science , composite material , electrical conductor , percolation (cognitive psychology) , filler (materials) , electromagnetic field , composite number , magnetic field , conductivity , chemistry , physics , quantum mechanics , neuroscience , biology
The facing material was developed for the purpose of shielding man-made electromagnetic fields in production working and domestic conditions. The facing material was designed on the base of latex and fine iron ore concentrate as filler. The experimental data on shielding of electromagnetic fields of ultrahigh frequencies and magnetic field of industrial frequency were obtained for different material thicknesses and concentration of screening particles. The significant increase of the shielding coefficients was established and explained by the manifestation of the percolation effect - the increase of the material conductivity at the critical concentration of the conductive component. The calculation apparatus for determining the dependence on the shielding properties of the material on the concentration of shielding substance was proposed. The method of the screening substance critical concentration calculation is shown to enable designing materials of lower thickness, weight and self-cost.

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