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Nonwovens with Implanted Split Rings for Barriers Against Electromagnetic Radiation

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Authors:

  • Michalak Marina
    Department of Fibre Physics and Textile Metrology, Faculty of Material Technologies and Textile Design, Technical University of Łódź, Łódź, Poland
  • Brazis Romuald
    Semiconductor Physics Institute, Vilnius, Lithuania
  • Kazakevičius Vladimiras (j/w)
  • Bilska Jadwiga
    Department of Fibre Physics and Textile Metrology, Faculty of Material Technologies and Textile Design, Technical University of Łódź, Łódź, Poland
  • Krucińska Izabella (j/w)

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Abstract:

This work is a continuation of our investigations into nonwoven structures designed as barriers against electromagnetic radiation. The needled nonwovens were manufactured from polypropylene fibres. On the basis of the measured electric resistance of the fibres and the properties of the nonwovens manufactured from these fibres, we forecasted the behaviour of the nonwoven products in electromagnetic fields. The results obtained were verified experimentally by testing the nonwoven elements in a microwave electromagnetic field. In order to reduce the microwave transmission through the tested products, electroconductive elements of special shape were introduced into the nonwoven structure. The geometry, properties, and spatial configuration of these elements were selected according to the results obtained during our previous investigations into the attenuation of electromagnetic radiation within the range of 7.0 – 10.0 GHz.

Tags:

textile barriers, electromagnetic radiation, nonwoven modelling, polypropylene, wave transmission, wave attenuation, wire ring

Published in issue no 5 (59) / 2006, pages 64–68.

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