Electromagnetic interference shielding by using conductive polypyrrole and metal compound coated on fabrics

Lee, C. Y.; Lee, D. E.; Jeong, Chan-Hui; Hong, Young Ki; Shim, Jae Ho; Joo, Jinsoo; Kim, M. S.; Lee, J. Y.; Jeong, Seung-Ho; Byun, S.W.; Zang, Dong‐Sik; He, Yunhui

doi:10.1002/pat.227

Cited by 68 publications

(27 citation statements)

References 12 publications

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“…SE is defined as the ratio of the power of the incident wave P I to that of the transmitted wave P T [4]. SE = 10 log (P I / P T ) dB (1) WDHTV shows 5dB higher shielding efficiency than WDNRC ( fig.…”

Section: A Characterisation Of Polymeric Ferrite Sheetsmentioning

confidence: 99%

Retracted: Mechanisms of influence of MM-waves on development physiology of fitosistems

Винниченко

Lykholat

Drobakhin

et al. 2010

2010 20th International Crimean Conference "Microwave &Amp; Telecommunication Technology"

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Reduction of Specific Absorption Rate (SAR) has now become a buzz word due to the growing health concerns over microwave exposure. Ferrites are found to be effective in diminishing electromagnetic influence. In this work flexible polymeric ferrite sheets are characterised on the basis of their shielding efficiencies. SAR measurements are done with planar wearable antenna and polymeric ferrite shielding to confirm its competence.

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Section: A Characterisation Of Polymeric Ferrite Sheetsmentioning

confidence: 99%

Retracted: Mechanisms of influence of MM-waves on development physiology of fitosistems

Винниченко

Lykholat

Drobakhin

et al. 2010

2010 20th International Crimean Conference "Microwave &Amp; Telecommunication Technology"

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“…In [44], the researchers proposed a coating of polyester and polyethylene fabrics with PPy and Ag and Palladium, reaching shielding effectiveness from 65 till 80 dB in the range from 10 to 1000 MHz.…”

Section: Ppy/polyester Textilesmentioning

confidence: 99%

Applications of Polypyrrole/Polyester Textiles: A Review

Sparavigna¹

2017

ijSciences

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Abstract:The polypyrrole, in its intrinsically conducting form, can be used to prepare composites such as polypyrrole/polyester textiles by coating yarns or fabrics made of polyester. In this manner, we obtain textiles that can be involved in several applications, among which we find the use of textiles in electromagnetic shielding. However, several other uses of polypyrrole/polyester composites are possible, such as in biomedical applications. Here we propose a survey of the literature about these composites. Keywords: Textiles, Polypyrrole, Intrinsically Conducting Polymers, Electromagnetic shielding IntroductionWhen opportunely processed, the polypyrrole becomes an intrinsically conducting polymer. This material can be used to prepare polypyrrole/polyester textile composites, by coating yarns or fabrics made of polyester. In this manner we obtain textiles that can be used for several applications. Two of them are the electromagnetic interference (EMI) shielding and the radiation-absorbent camouflage [1][2][3][4][5]. Materials for EMI shielding are needed due to the interference of radio frequency and microwave devices with computers, transformers, cables, mobile phones, medical devices, and also for the effect of the radiation on human health. Applications of textiles is therefore required for the shielding of persons, devices or large volumes such as those of an entire room. In the case that textiles are applied as radiation-absorbent materials they can be used in stealth technology, to disguise devices or structures from radar detection. Other applications of the polypyrrole/polyester fibres and fabrics are possible, in particular in the biomedical area.

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“…Under such condition, non conducting shielding material with high-reflection coefficient is a good alternative. The EMI shielding efficiency SE is defined [12,13] as the ratio of the power of the incident wave P I to that of the transmitted wave P T .…”

Section: Experimental Setup and Theorymentioning

confidence: 99%

Enhanced EMI shielding efficiency using carbon, graphite, and polyaniline blends

Mathew

Kalappura

Augustine³

et al. 2009

Micro & Optical Tech Letters

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Conducting polymers have found significant applications in the past decade in industrial, scientific, and medical (ISM) fields. The characteristic features of conducting polymers like reversible proton doping, variable conductivity, facile synthesis, and low cost make them potential candidates in various microelectronic applications. Conventional microwave absorbing materials such as carbon and graphite in the powder form were blended with polyaniline as base at different proportions and microwave properties such as transmission, reflection, and shielding efficiency (SE) were evaluated from S parameter measurements using HP 8714ET network analyzer. The newly developed polyaniline blend exhibits high‐electromagnetic interference shielding efficiency when compared with previously developed materials and is a promising candidate for shielding applications. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 393–397, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24939

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Electromagnetic interference shielding by using conductive polypyrrole and metal compound coated on fabrics

Cited by 68 publications

References 12 publications

Retracted: Mechanisms of influence of MM-waves on development physiology of fitosistems

Retracted: Mechanisms of influence of MM-waves on development physiology of fitosistems

Applications of Polypyrrole/Polyester Textiles: A Review

Enhanced EMI shielding efficiency using carbon, graphite, and polyaniline blends

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