The Effects of Fabric and Conductive Wire Properties on Electromagnetic Shielding Effectiveness and Surface Resistivity of Interlock Knitted Fabrics

Sancak, Erhan; Akalın, Mehmet; Usta, Ismail; Yüksek, Metin; Özen, Mustafa

doi:10.1007/s12221-018-7906-8

Cited by 22 publications

(19 citation statements)

References 27 publications

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“…Liang et al 6 specified that conductive yarns should be used both in horizontal and vertical directions to provide shielding against electromagnetic waves from different directions. Sancak et al 24 studied the EMSE and surface resistivity of knitted fabrics. In their study, fabrics having lower surface resistivity showed better EMSE performance.…”

Section: Emse Test Resultsmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Özkan

2019

Journal of Engineered Fibers and Fabrics

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In this study, antimicrobial and electromagnetic shielding properties of metal composite single jersey fabrics were investigated. For this purpose, stainless steel wire, copper wire, and metalized silver polyamide filament were commingled with textured polyester. The composite yarns were knitted to single jersey fabrics. Electromagnetic shielding effectiveness of samples was measured according to free space test method between 0.8 and 5.2 GHz frequency range. In addition, antibacterial and antifungal activity tests were performed for the overall technical characterization of composite fabrics. The effects of metal type, filament form on electromagnetic shielding effectiveness, and antimicrobial properties were examined. All composite fabrics showed electromagnetic shielding properties at different levels up to 35 dB in vertical direction. Fabrics including metalized multifilament yarn exhibit higher electromagnetic shielding effectiveness in both vertical and horizontal directions. In addition, antibacterial activity level of metalized silver polyamide and copper composite fabrics reached up to 99% against Klebsiella pneumoniae and Staphylococcus aureus. Furthermore, Aspergillus niger could not grow on these composite fabrics.

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Section: Emse Test Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Özkan

2019

Journal of Engineered Fibers and Fabrics

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“…The effect of the metal wire type was highly significant between 15 and 600 MHz. 17 An increase in copper wire diameter shows a general decrease in electromagnetic SE. With the increase in diameter, the bending of copper thread becomes more difficult, resulting in openness in the knitted fabric structure, thereby providing less SE.…”

Section: Introductionmentioning

confidence: 99%

“…With the increase in diameter, the bending of copper thread becomes more difficult, resulting in openness in the knitted fabric structure, thereby providing less SE. 17,24 It was stated 13,14 that when conductive metal wires were formed in a laminated fabrics, they displayed the best EMR shielding behavior, especially for high-frequency electromagnetic waves. Yu et al concluded 13 that EMR shielding efficiency of two-layer fabrics depends on lamination angles due to the metal wire forming a grid structure in the lamination fabrics.…”

Section: Introductionmentioning

confidence: 99%

Hybrid knitted fabric for electromagnetic radiation shielding

Tunáková

Tunák

Bajzík

et al. 2020

Journal of Engineered Fibers and Fabrics

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Today we can’t imagine our life without electricity and technology, transport and television. In the information age, computers, the Internet, cell phones, and smartphones are helpers for everyday needs. However, our environment and comfortable living in it can be detrimental to our health. It is hard to realize the fact that such a global technical breakthrough has hit human health. Exposure to electromagnetic radiation could lead to changes in the structure of nerve cells and blood formulas, deformation of the circulatory system, pathology of the endocrine system, decreased immunity, and so on. Nowadays the development of innovative textiles with electromagnetic radiation shielding is a relevant topic that promotes the creation of a flexible protective screen for the human being and various electronic devices. Textiles themselves do not protect against electromagnetic radiation; however, the textiles can be successfully converted into protective material after changing the raw material composition, creating a new production process, or adapting technologies that can make them electrically conductive. Basic methods of textile producing such as weaving, knitting, non-weaving, or their combination can be used to make electromagnetic shielding fabric. In this study, the knitting on 8-gauge flat-bed machine has been chosen as main technology. The metal wire (stainless steel: 0.12 mm) is used separately or together with 10 × 2 tex cotton yarn. Two sets of samples with different interloopings are produced which differ by steel percentages and positioning in the structures. Electromagnetic shielding effectiveness of textile samples (dB) was measured according to ASTM 4935-10 on frequency range 30 MHz–1.5 GHz. It is concluded that the positioning of the metal components in the knitted structure is the main factor determining the shielding ability. The half Milano rib knitted structure demonstrates the highest shielding efficiency.

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“…With the development of electronic industry, people's life is flooded with a large number of electromagnetic waves, which endangers human health and interferes with the operation of electronic equipment, thus leading to the increasing demand for radiation-proof functional textiles. Recent research papers on electromagnetic shielding effectiveness (EMSE) mainly focus on technology of electromagnetic shielding (EMS) materials [1][2][3][4][5], influencing factors [6][7][8][9][10][11][12], or calculation [12][13][14][15][16]. The blended metal fabric-EMS has so many advantages in price, technology maturity, EMS performance, and wear ability that it has become one of the most widely used EMS fabrics [7].…”

Section: Introductionmentioning

confidence: 99%

A new study on the influencing factors and mechanism of shielding effectiveness of woven fabrics containing stainless steel fibers

Yang

Wang

Liu

2019

Journal of Industrial Textiles

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Electromagnetic radiation is becoming increasingly serious around our living environment, which seriously endangers people's health and interferes with the operation of electronic equipment. The research and development of anti-electromagnetic radiation fabric have drawn more and more attention. However, the influencing rules and mechanisms of conductive fiber content, fabric tightness, warp–weft density, conductive yarn arrangement, weave type, and electromagnetic wave frequency on fabric electromagnetic shielding effectiveness have not been clarified. Therefore, in this study, a series of fabrics containing stainless steel fibers were produced. Meanwhile, the influencing rules of various factors on electromagnetic shielding effectiveness and the quantitative relationship between some factors and electromagnetic shielding effectiveness were discussed. The results showed that all factors had different degrees of influence on electromagnetic shielding effectiveness, and the relationship between electromagnetic shielding effectiveness and electromagnetic wave frequency could be approximately expressed as: [Formula: see text]. At the same time, the influencing mechanisms of various factors on electromagnetic shielding effectiveness were analyzed in combination with fabric microstructure and macrostructure, the intrinsic parameters of the fabric and the electromagnetic shielding effectiveness mechanism. The results are expected to provide a reference for the establishment of electromagnetic shielding fabric model and enterprise production.

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The Effects of Fabric and Conductive Wire Properties on Electromagnetic Shielding Effectiveness and Surface Resistivity of Interlock Knitted Fabrics

Cited by 22 publications

References 27 publications

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

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

Hybrid knitted fabric for electromagnetic radiation shielding

A new study on the influencing factors and mechanism of shielding effectiveness of woven fabrics containing stainless steel fibers

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