Stainless steel/polyester woven fabrics and copper/polyester woven fabrics: Manufacturing techniques and electromagnetic shielding effectiveness

Abstract

This study uses metallic wires, stainless steel (SS) wires, and copper (Cu) wires as the core and 75 denier polyester (PET) fibers as the wrap material to form the metal/PET wrapped yarns. The optimal SS/PET and Cu/PET wrapped yarns are then made into different woven fabrics. The test results of the metallic wrapped yarns show that the optimal tenacity occurs with the wrapping count being 12 turns/cm, while the metal/ PET woven fabrics have a low surface resistivity due to the conductive metal/PET wrapped yarns along the weft direction. An increasing number of laminating layers increases the electromagnetic shielding effectiveness (EMSE) while decreasing the air permeability of the woven fabrics. The laminating angle is also proportional to the EMSE of the woven fabrics. In sum, the combination of metal wires and PET fibers provides the resulting woven fabrics with good EMSE.

Preparation Technique and EMI Shielding Evaluation of Flexible Conductive Composite Fabrics Made by Single and Double Wrapped Yarns

“…When the frequency exceeds 2000 MHz, the incident waves become short enough to easily penetrate through the slit on the shield. This results in leaky wave phenomenon and decreases EMI SE [21][22][23]. FIGURE 11.…”

Multifunctional Stretchable Conductive Woven Fabric Containing Metal Wire with Durable Structural Stability and Electromagnetic Shielding in the X-Band

“…For EM shielding yarns, metal wires incorporated into the yarn are often considered to be the best and most straightforward EM shielding material because of their excellent conductivity and the fabric s permeability [14]. Compared to traditional stiff metallic materials, yarns and/or fabrics containing metallic staple fibers/continuous wires have gained considerable interest recently [14][15][16][17][18]. Yarns with a range of different conductive fibers and wires have been examined including stainless steel [5,7,[19][20][21][22][23], copper [23,24], silver-coated wire [25].…”

“…Based on current literature on the EMI shielding of woven/knitted fabrics containing continuous metal wires and/or metallic fibers, it is noted that factors such as the type of metal, its thickness, metallic content and its distribution and orientation of within a yarn and/or fabric, along with fabric factors such as weave construction, warp/weft density, the lamination layers and lamination angles have considerable effects on the EMSE values of the resultant composite fabrics [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. However, work reported so far has mostly measured EM radiation in the low frequency range (usually 0-3 GHz) and fabrics without any elastic features.…”

Investigation on antimicrobial activity and electromagnetic shielding effectiveness of metal composite single jersey fabrics

“…Therefore, hybrid yarns produced from metal wires with synthetic or natural fibers/yarns can be preferable. 8,12 In previous studies, various methods were used for the production of metal composite yarn such as blending in staple form, 6,13 hollow spindle, 9,10,14 metal coating, 15 plying/twisting with metal wire, [16][17][18] core spun, 1,[19][20][21][22][23][24] and siro core spinning. 8 There are many studies about knitted fabrics produced from different types of metal composite yarns.…”