Studying the shielding of an electromagnetic field by a textile material containing ferromagnetic nanostructures
The technology has been proposed for manufacturing a textile material that contains ferromagnetic nanoparticles for shielding electromagnetic fields. It has been shown that the most effective method of sticking together between nano-particles and the fibers of the textile material is the application of magnetic liquid with nanoparticles on the material and its exposure in a heterogeneous permanent magnetic field. Under the condition of a magnetic field intensity of 450 A/m and the exposure to it for 12 hours, the implantation of the nanoparticles into the linen fabric becomes almost irreversible. The protective properties of the developed material have been investigated. When impregnated with a magnetic liquid in the amount of 45–50 g/m2 (a ferromagnetic particle content of 9 % by weight), the material's shielding coefficients for 1–3 layers amount to: for the electric field of industrial frequency 1.4÷4.8; for a magnetic field, 1.9÷8.1. Following the magnetic treatment, these indicators are 2.9÷8.6 and 2.3÷8.9, respectively. In order to remove technological components such as vacuum oil and oleic acid from the magnetic fluid, it would suffice to apply a synthetic detergent, which has been confirmed by experimentally.We have investigated the efficiency of the obtained result under actual industrial conditions. It was established that the decrease in the magnetic field intensity of industrial frequency and its inter-harmonics by a single layer of the impregnated material without magnetic treatment is 1.4, with a magnetic treatment ‒ 2. In this case, there is no significant decrease in the level of the natural geomagnetic field. We have modeled the distribution of a magnetic field in the human body for the case of manufacturing a protective suit from the developed material. Under the conditions of a warranted reduction in the magnetic field intensity by 2 times in critical places, an increase in the field level is observed in the cervical region due to the increase in the magnetic resistance in this region. This should be considered when designing the protective suit configuration
Directive 2013/35/EU of the European Parliament and of the Council of 26 June 2013 on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields). Available at: https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2013:179:0001:0021:EN:PDF
Ceken, F., Pamuk, G., Kayacan, O., Ozkurt, A., Ugurlu, Ş. S. (2012). Electromagnetic Shielding Properties of Plain Knitted Fabrics Containing Conductive Yarns. Journal of Engineered Fibers and Fabrics, 7 (4), 155892501200700. doi: https://doi.org/10.1177/155892501200700404
Ahmed, A. A. A., Pulko, T. A., Nasonova, N. V., Lyn'kov, L. M. (2015). Flexible miltilayer electromagnetic radiation shields. Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioelektroniki, 5 (91), 95–99.
Patil, N., Velhal, N. B., Pawar, R., Puri, V. (2015). Electric, magnetic and high frequency properties of screen printed ferrite-ferroelectric composite thick films on alumina substrate. Microelectronics International, 32 (1), 25–31. doi: https://doi.org/10.1108/mi-12-2013-0080
Al'-Ademi, Ya. T. A., Ahmed, A. A. A., Pulko, T. A., Nasonova, N. V., Lyn'kov, L. N. (2014). Shirokodiapazonnye konstruktsii ekranov elektromagnitnogo izlucheniya na osnove vlagosoderzhashchey tsellyulozy. Trudy MAI, 77.
Mondal, S., Ganguly, S., Das, P., Khastgir, D., Das, N. C. (2017). Low percolation threshold and electromagnetic shielding effectiveness of nano-structured carbon based ethylene methyl acrylate nanocomposites. Composites Part B: Engineering, 119, 41–56. doi: https://doi.org/10.1016/j.compositesb.2017.03.022
Glyva, V., Podkopaev, S., Levchenko, L., Karaieva, N., Nikolaiev, K., Tykhenko, O. et. al. (2018). Design and study of protective properties of electromagnetic screens based on iron ore dust. Eastern-European Journal of Enterprise Technologies, 1 (5 (91)), 10–17. doi: https://doi.org/10.15587/1729-4061.2018.123622
Yadav, Kuřitka, Vilčáková, Machovský, Škoda, Urbánek et. al. (2019). Polypropylene Nanocomposite Filled with Spinel Ferrite NiFe2O4 Nanoparticles and In-Situ Thermally-Reduced Graphene Oxide for Electromagnetic Interference Shielding Application. Nanomaterials, 9 (4), 621. doi: https://doi.org/10.3390/nano9040621
Jiao, Y., Wan, C., Zhang, W., Bao, W., Li, J. (2019). Carbon Fibers Encapsulated with Nano-Copper: A Core‒Shell Structured Composite for Antibacterial and Electromagnetic Interference Shielding Applications. Nanomaterials, 9 (3), 460. doi: https://doi.org/10.3390/nano9030460
Polevikov, V. K., Erofeenko, V. T. (2017). Numerical modeling the interaction of a magnetic field with a cylindrical magnetic fluid layer. Informatics, 2 (54), 5–13.
Lavrova, O., Polevikov, V., Tobiska, L. (2016). Modelling and simulation of magnetic particle diffusion in a ferrofluid layer. Magnetohydrodynamics, 52 (4), 417–452.
Glyva, V. A., Podoltsev, A. D., Bolibrukh, B. V., Radionov, A. V. (2018). A thin electromagnetic shield of a composite structure made on the basis of a magnetic fluid. Tekhnichna Elektrodynamika, 2018 (4), 14–18. doi: https://doi.org/10.15407/techned2018.04.014
GOST Style Citations
1. The composite facing material for electromagnetic felds shielding
V A Glyva, L O Levchenko, O V Panova, O M Tykhenko, M M Radomska
IOP Conference Series: Materials Science and Engineering Vol: 907 First page: 012043 Year: 2020
Copyright (c) 2020 Valentyn Glyva, Oleg Barabash, Natalia Kasatkina, Mykhailo Katsman, Larysa Levchenko, Oksana Tykhenko, Kyrylo Nikolaiev, Olena Panova, Batyr Khalmuradov, Oleksiy Khodakovskyy
This work is licensed under a Creative Commons Attribution 4.0 International License.
ISSN (print) 1729-3774, ISSN (on-line) 1729-4061