Investigation of the Electromagnetic Shielding Effectiveness of Needle Punched Nonwoven Fabrics Produced from Stainless Steel and Carbon Fibres

Özen, Mustafa; Usta, Ismail; Yüksek, Metin; Sancak, Erhan; Soin, Navneet

doi:10.5604/01.3001.0010.5636

Cited by 13 publications

(12 citation statements)

References 14 publications

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“…The UPF of the treated samples were obtained used 'Ultra Violet Transmittance Fabric Analyzer-lab sphere-USA. The UPF values are calculated automatically, in accordance with Australia/ Newzeland standard AS/NZS 4399:1996.The antimicrobial activity of the treated fabrics was examined against Staphylococcusaureus, ImprovINg ANtIbActerIAl ANd UltrAvIolet propertIes of cottoN ... [45].…”

Section: Testing and Analysismentioning

confidence: 99%

Improving antibacterial and sun protective properties of cotton fabrics via dual effect of nano-metal oxide and Moringaoleifera extract

2020

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B leACheD cotton fabrics were pre-treated with Moringa oleifera leaf extract as natural bioactive materials to impart the fabrics dual antibacterial and sun protective properties. The fabrics were the treated with titanium dioxide nanoparticles(TiO 2 NPs) and zinc oxide nanoparticles (ZnONPs) separately with concentration 2wt.% and 1 wt.% respectively in presence of 1,2,3,4-butane tetracarboxlyic acid(BTCA) as non-formaldehyde crosslinking agent by using pad dry cure method. The treated cotton fabrics were evaluated via monitoring morphological changes of the fibers by using scanning electron microscopy and X-ray diffraction, scanning electron microscopy(SEM&EDX), mechanical properties (tensile strength and elongation at break),roughness, ultraviolet protection factor (UPF). In addition, evaluation of antibacterial activity the treated fabrics by using disk inhibition zone. Research output disclosed that the fabrics treated with moringa extract and then with titanium dioxide nanometal oxide powder show the best results.

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Section: Testing and Analysismentioning

confidence: 99%

Improving antibacterial and sun protective properties of cotton fabrics via dual effect of nano-metal oxide and Moringaoleifera extract

2020

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“…Many research papers describe SE evaluation from different perspectives, i.e., measurement techniques [1,2,3,4,5,6,7], composition of materials [8,9,10,11,12,13,14,15,16,17], influence of washing/drying cycles on values of SE of fabrics [18,19,20], or calculation of SE [4,21,22,23,24,25,26,27,28,29,30,31]. SE measurement is commonly performed by a coaxial transmission line method specified in ASTM 4935-10 [1,2,3,4,6,8,9,10,12,14,17,18] by measuring the insertion loss with a dual transverse electromagnetic (TEM) cell [3,5], or by measurement in a free space, shielding box, or shielding room with receiving and transmitting antennas [7,15,19,20].…”

Section: Introductionmentioning

confidence: 99%

“…SE measurement is commonly performed by a coaxial transmission line method specified in ASTM 4935-10 [1,2,3,4,6,8,9,10,12,14,17,18] by measuring the insertion loss with a dual transverse electromagnetic (TEM) cell [3,5], or by measurement in a free space, shielding box, or shielding room with receiving and transmitting antennas [7,15,19,20]. The papers which focus on measurement techniques of various electrically conductive fabrics usually present basic equations for SE calculation [4,21,22,23,24,25,26,27,28] (SI units are used in all formulas unless otherwise stated) as shown in Equation (1).…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Shielding Effectiveness of Woven Fabrics with High Electrical Conductivity: Complete Derivation and Verification of Analytical Model

Neruda

Vojtěch

2018

Materials

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In this paper, electromagnetic shielding effectiveness of woven fabrics with high electrical conductivity is investigated. Electromagnetic interference-shielding woven-textile composite materials were developed from a highly electrically conductive blend of polyester and the coated yarns of Au on a polyamide base. A complete analytical model of the electromagnetic shielding effectiveness of the materials with apertures is derived in detail, including foil, material with one aperture, and material with multiple apertures (fabrics). The derived analytical model is compared for fabrics with measurement of real samples. The key finding of the research is that the presented analytical model expands the shielding theory and is valid for woven fabrics manufactured from mixed and coated yarns with a value of electrical conductivity equal to and/or higher than σ = 244 S/m and an excellent electromagnetic shielding effectiveness value of 25–50 dB at 0.03–1.5 GHz, which makes it a promising candidate for application in electromagnetic interference (EMI) shielding.

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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. 7–20…”

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confidence: 99%

“…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.…”

mentioning

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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Investigation of the Electromagnetic Shielding Effectiveness of Needle Punched Nonwoven Fabrics Produced from Stainless Steel and Carbon Fibres

Abstract: aaa

Cited by 13 publications

References 14 publications

Improving antibacterial and sun protective properties of cotton fabrics via dual effect of nano-metal oxide and Moringaoleifera extract

Improving antibacterial and sun protective properties of cotton fabrics via dual effect of nano-metal oxide and Moringaoleifera extract

Electromagnetic Shielding Effectiveness of Woven Fabrics with High Electrical Conductivity: Complete Derivation and Verification of Analytical Model

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

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