Evaluation of electromagnetic shielding effectiveness of multi-axial fabrics and their reinforced PES composites

Erdem, Ramazan

doi:10.1007/s12034-016-1234-7

Cited by 7 publications

(3 citation statements)

References 34 publications

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“…The carbon nanofiber (VGCNF) and reinforced nanocomposites were weighed to find out the amount of carbon nanofiber used within the construction. And so, for nanocomposite structures, carbon nanofiber volume fraction was calculated according to standard using equation (2) 30 where V f is volume fraction of fibers, W f is weight of fibers, W m is weight of matrix, ρ f is density of fibers, and ρ m is density of matrix.…”

Section: Experimental Workmentioning

confidence: 99%

“…2 Concerns about electromagnetic interference (EMI) have been growing among the researchers due to their potential health hazards on living creatures and their negative impacts on the performance of the electronic devices, as the usage of electrical and electronic equipment has been accumulating day by day. 3 The source of the EMI is principally electrical with unwanted electromagnetic emission being radiated or conducted. 4 Electromagnetic shielding effectiveness (EMSE) is described as blocking the electromagnetic fields by facilitating conductive or magnetic materials as barriers.…”

Section: Introductionmentioning

confidence: 99%

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Analyses of the mechanical, electrical and electromagnetic shielding properties of thermoplastic composites doped with conductive nanofillers

Yılmaz

Özen

Sancak

et al. 2018

Journal of Composite Materials

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The purpose of this study is to observe effect of incorporating vapor grown carbon nanofibers with various amounts in polyvinylidene fluoride matrix in terms of mechanical strength and electromagnetic shielding effectiveness. Thermoplastic conductive nanocomposites were prepared by heat pressed compression molding. Vapor grown carbon nanofibers were utilized at various weight ratios (1 wt. %, 3 wt. %, 5 wt. % and 8 wt. %) as conductive and reinforcing materials. Polyvinylidene fluoride was used as a thermoplastic polymer matrix. SEM analysis was conducted in order to characterize the morphology and structural properties of the nanocomposites and results revealed well dispersion of carbon nanofibers within the matrix for all concentrations. Mechanical characteristics were investigated according to standards. Findings proved that overall increments of 16%, 37,5% and 56% were achieved in terms of tensile strength, elasticity modulus and impact energy, *: Corresponding author E-mail: acyilmaz@cu.edu.tr 1 respectively where a total reduction of 44.8% was observed in terms of elongation for 8 wt.% vapor grown nanofiber matrix compared to that of 0 wt.%. Electromagnetic shielding effectivenesses of the nanocomposites were determined by standard protocol using coaxial transmission line measurement technique in the frequency range of 15-3000 MHz. It was observed that resistance, sheet resistance and resistivity of nanocomposites depicted substantial reduction with the increment of nanofiber content. Nevertheless, it was observed that nanofiber content, dispersion and network formation within the composites were highly influent on the electromagnetic shielding effectiveness performance of the structures.

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Section: Experimental Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analyses of the mechanical, electrical and electromagnetic shielding properties of thermoplastic composites doped with conductive nanofillers

Yılmaz

Özen

Sancak

et al. 2018

Journal of Composite Materials

Self Cite

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show abstract

“…For example, the electromagnetic shielding effectiveness (EMSE) of the multiaxial fabrics containing steel yarns and carbon filaments and their polyester (PES)-resin-reinforced composites were studied by using coaxial transmission line measurement technique. The tested results show that the structures containing both carbon filaments and stainless steel yarns exhibited better EMSE than the ones including only one type of conductive yarns or filaments (Erdem, 2016). The electromagnetic shielding behavior of fabrics woven by carbon/stainless steel/polypropylene (C/SS/PP) hybrid yarns was investigated in the frequency range from 300 kHz to 1.5 GHz, and the electromagnetic shielding behavior of C/SS/PP hybrid yarn fabric and the effect of different fabric parameters such as pick density, fabric architecture and number of fabric layers on shielding effectiveness (SE) of fabrics with C/SS/PP hybrid yarns were mainly studied (Krishnasamy et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Study on properties of electromagnetic shielding yarns and fabrics

Liu

Xinxin

et al. 2020

IJCST

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PurposeWith the popularization of electronic products, the electromagnetic radiation pollution has been the fourth largest pollution after water, air and noise pollution. Therefore, electromagnetic shielding property of textiles is attracting more attention. In this paper, the properties of electromagnetic shielding yarns and fabrics were studied.Design/methodology/approachTen kinds of yarn, stainless steel short fiber and polyester blend yarn with three different blending ratios T/S 90/10, T/S 80/20 and T/S 70/30, stainless steel short fiber, polyester and cotton blend yarn with blending ratio C/T/S 35/35/30, core-spun yarn with one 30 um stainless steel filament C/T28tex/S(30 um), core-spun yarn with two 15 um stainless steel filaments (C/T28tex/S(15 um)/S(15 um)), twin-core-spun yarn with one 30 um stainless steel filament and one 50D spandex filament C/T28tex/S(30 um)/SP(50D), sirofil wrapped yarn with one 30 um stainless steel filament feeding from left S(30 um)+C/T28tex, sirofil wrapped yarn with one 30 um stainless steel filament feeding from right C/T28tex+S(30 um), sirofil wrapped yarn with two 15 um stainless steel filaments feeding from two sides S(15 um)+C/T28tex+ S(15 um), were spun. The qualities of spun yarns were measured. Then, for analyzing the electromagnetic shielding properties of fabrics made of different spun yarns, 20 kinds of fabrics were woven.FindingsThe tested results show that comparing to the T/S 80/20 blend yarn, the resistivity of composite yarns with the same ratio of the stainless steel filament is smaller. The possible reason is that comparing to the stainless steel short fiber, the conductivity of stainless steel filament is better because of the continuous distribution of stainless steel in the filament. Comparing with the core-spun yarn, the conductivity of the sirofil wrapped yarn is a little better. Comparing to the fabric woven by the blend yarn, the electromagnetic shielding of the fabric woven by the composite yarn is better, and comparing to the fabric woven by the core-spun yarn, the electromagnetic shielding of the fabric woven by the sirofil yarn is a little better. The possible reason is that the conduction network can be produced by the stainless steel filament wrapped on the staple fiber yarn surface in the fabric, and the electromagnetic wave can be transmitted in the network.Originality/valueIn this paper, the properties of electromagnetic shielding yarns and fabrics were studied. Ten kinds of yarn, including three stainless steel short fiber and polyester blend yarns, one stainless steel short fiber, polyester and cotton blend yarn, two core-spun yarns, one twin-core-spun yarn, three sirofil wrapped yarn, were spun. Then, for analyzing the electromagnetic shielding properties of fabrics made of different spun yarns, 20 kinds of fabrics were woven. The effects of fabric warp and weft densities, fabric structures, yarn kinds, yarn distributions in the fabric on electromagnetic shielding were analyzed.

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Shielding-benefit Evaluation of Electromagnetic Radiation and UV Radiation for Multifunctional Composite Polypropylene Woven Fabrics

et al. 2020

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Evaluation of electromagnetic shielding effectiveness of multi-axial fabrics and their reinforced PES composites

Cited by 7 publications

References 34 publications

Analyses of the mechanical, electrical and electromagnetic shielding properties of thermoplastic composites doped with conductive nanofillers

Analyses of the mechanical, electrical and electromagnetic shielding properties of thermoplastic composites doped with conductive nanofillers

Study on properties of electromagnetic shielding yarns and fabrics

Shielding-benefit Evaluation of Electromagnetic Radiation and UV Radiation for Multifunctional Composite Polypropylene Woven Fabrics

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