Investigation of the textile structures with different design used in electromagnetic shielding

Apreutesei, Alina Lacrămioara; Curteza, Antonela; David, Valeriu; Nica, Ionut; Rau, Miuta Carmina; Baltag, Octavian

doi:10.1109/icepe.2014.6969979

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…They can be produced in filament or staple lengths and can be incorporated with traditional non-conductive fibers to create yarns that possess varying degrees of conductivity. [2][3][4][5][6][7] Another method represents conductive coatings on fibers or yarns by metals [8][9][10][11] or conductive polymers. [12][13][14] Therein, fibers containing carbon black or other conductive particles can be also used.…”

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confidence: 99%

Influence of washing/drying cycles on fundamental properties of metal fiber-containing fabrics designed for electromagnetic shielding purposes

Tunáková

Techniková

Militký

2016

Textile Research Journal

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The development of lightweight flexible materials for electromagnetic interference shielding has received increased attention in recent years, particularly for clothing or technical applications and especially in areas of aircraft, aerospace, automobiles and flexible electronics, such as portable electronics and wearable devices. There are many references in the literature concerning the development and investigation of electromagnetic shielding lightweight flexible materials, especially those that are textile based with different electrically conductive additives. However, little attention has been paid to the problems related to the performance of developed electromagnetic shielding materials for clothing in use, above all wet processing (washing and drying). The main aim of this paper is a description of the influence of washing/drying cycles on the fundamental properties of metal fiber-containing fabrics. Changes in electromagnetic shielding ability and electric conductivity after washing/drying cycles were studied and also other characteristics, such as pilling, changes in mass per unit area and thickness of conductive fabrics, were evaluated. For the purpose of this study, fabrics with different structures (knitted, woven) containing extremely thin stainless steel staple fibers incorporated to the yarn structure as the conductive filler were chosen. For quantification of the influence of the washing/drying cycles on the above-mentioned characteristics, regression methods and simple t-tests were used. Both knitted and woven fabrics withstood satisfactory repeated application of wet processing with respect to the main requirement -electromagnetic shielding ability; in addition, woven fabrics exceeded in higher electrical conductivity, higher shielding effectiveness and lower inclination to pilling and therefore can be used for the production of protective cloth.

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confidence: 99%

Influence of washing/drying cycles on fundamental properties of metal fiber-containing fabrics designed for electromagnetic shielding purposes

Tunáková

Techniková

Militký

2016

Textile Research Journal

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“…6 Therefore, numerous studies related to the manufacturing of conductive fabrics for EMSE applications at different frequency ranges have been completed. [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Woven fabrics are any textiles consisting of at least two sets of yarns (warp and weft) that interlace perpendicularly to each other on a weaving machine. Taking into account that a satisfactory level of EMSE can be obtained by arranging the conductive yarns in an orthogonal grid, woven fabrics have been considered for EMSE applications in the textile industry.…”

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confidence: 99%

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

Toghchi

Loghin

Cristian

et al. 2019

Textile Research Journal

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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.

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EMI shielding disclosed through virtual and physical experiments

Rosu

Baltag

2020

Materials for Potential EMI Shielding Applications

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Investigation of the textile structures with different design used in electromagnetic shielding

Cited by 9 publications

References 13 publications

Influence of washing/drying cycles on fundamental properties of metal fiber-containing fabrics designed for electromagnetic shielding purposes

Influence of washing/drying cycles on fundamental properties of metal fiber-containing fabrics designed for electromagnetic shielding purposes

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

EMI shielding disclosed through virtual and physical experiments

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