Advanced Materials for Electromagnetic Shielding
by Maciej Jaroszewski, Sabu Thomas, Ajay V. Rane
10Textile Based Shielding Materials
Julija Baltušnikaitė‐Guzaitienė and Sandra Varnaitė‐Žuravliova
Center for Physical Sciences and Technology, Textile Institute, Kaunas, Lithuania
10.1 Introduction
As a result of the increase in electronic device usage, electromagnetic interference (EMI) has emerged as a problem. Electromagnetic waves emitted from electronic equipment affect both human health and other electronic devices negatively. Thus, to obtain protection against electromagnetic radiation (EMR) emitted by operating electrical and electronic devices, textile based shielding materials are used.
Electromagnetic shielding textile materials are used to produce multifunctional and interactive new generation structures because they block low‐density radiation and microwave radiation, which were emitted from mobile communication devices, and protect electronic equipment from signal loss. In addition, they feature advantages of low weight, flexibility, and comfort [1–5].
Textiles are intrinsically non EMI shielding materials and are rather insulating; however, they can successfully be turned into EMI shielding materials after raw‐material changes, new production process, or process adaptations that can make them electrically conductive [6–8].
Textile shielding materials are produced from conductive polymers, metallic fibers, metal wires, metallic coated yarns, or composite yarns. Composite yarns are produced by wrapping or doubling of wires (aluminum (Al), silver (Ag), nickel ...