The effects of the structural parameters of three-dimensional warp interlock woven fabrics with silver-based hybrid yarns on electromagnetic shielding behavior

Abstract

The main objective of the present study was to investigate the increase in the electromagnetic shielding effectiveness (EMSE) of a set of five variants of three-dimensional (3D) warp interlock woven fabrics containing silver multifilament yarns arranged in a 3D orthogonal grid. The EMSE enlargement as a factor of increasing the quantity of the conductive material per unit area was investigated. The quantity of the conductive material per unit area in a 3D woven fabric can be enlarged by increasing either the yarn undulation or the number of conductive yarn systems, while the yarn density and yarn fineness are fixed. Thus, the binding depth of the conductive warp was gradually increased for the first four variants in order to increase the yarn undulation. Alternatively, the conductive weft system was doubled for the last variant with the aim of increasing the quantity of the conductive component. It should be noted that changing the weave structure requires less effort and energy while keeping the same threading of warps in the reed compared to altering the warp density. The EMSE was measured in an anechoic chamber and the shielding was satisfactory for all the variants in the frequency range of 1–6 GHz (19–44 dB). The results revealed that increasing only 7% of the waviness degree of the conductive warps led to 17% EMSE improvement due to increasing of the conductive yarns through the thickness of the variants. Moreover, no upward EMSE was detected for the last variant, despite the fact that the conductive weft system was doubled.

Polymeric textile-based electromagnetic interference shielding materials, their synthesis, mechanism and applications – A review

“…Due to the increase of conductive yarn density through-thickness of the fabrics, the increase in EMSE was noted. Different shielding performance of fabric was noted in both warp and weft direction due to change in waviness degree of electroconductive yarns [111].…”

Effect of carbon nanotube fiber on shielding effectiveness of stainless-steel electromagnetic shielding fabric

“…Other current researches related to EMS fabrics mainly focus on the numerical model calculation (Liu and Wang, 2020), structural characteristics (Yin et al, 2022), performance improvement (Zhang et al, 2021;Pusic et al, 2022), influencing factors analysis (Wang et al, 2021;Toghchi et al, 2020), test evaluation (Vohra and El-Shenawee, 2021), new product Carbon nanotube fiber's effect development (Uzun et al, 2021;Tunakova et al, 2020) and new mechanism research (Yang et al, 2021;Kumar et al, 2021). However, these efforts have not addressed the simultaneous improvement of EMS and wave absorbing properties in EMS fabrics, nor have they explored the application of carbon nanotubes in EMS fabrics.…”

Shielding Performance of Electromagnetic Shielding Fabric Implanted with “Split-Ring Resonator”

“…However, the research of this aspect is still slow, and the existing mainly focuses on the numerical model calculation [ 4 ], structural characteristics [ 5 ], performance improvement [ 6 , 7 ], influencing factors analysis [ 8 , 9 ], test evaluation [ 10 ], new product development [ 11 , 12 ], and new mechanism research [ 13 , 14 ]. At present, improving the SE of the EMS fabric and retaining the inherent porous characteristics lack effective methods.…”