Development of electrically conductive activated carbon fabric from Kevlar fabric for effective EMI shielding applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F17%3A00004590" target="_blank" >RIV/46747885:24410/17:00004590 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Development of electrically conductive activated carbon fabric from Kevlar fabric for effective EMI shielding applications

Popis výsledku v původním jazyce

In the present work, porous and electrically conductive activated carbon fabric was produced by heating Kevlar fabric wastes using novel single stage carbonization. The influence of carbonization temperature of 800°C, 1000°C and 1200°C on physical and morphological properties of activated carbon fabric was studied from EDX and SEM analysis. Additionally, the electrical conductivity was also measured. At the end, the utility of prepared activated carbon web was investigated for electromagnetic shielding ability in high frequency (i.e. 2.45 GHz) and low frequency regions (i.e. below 1.5 GHz) using waveguide method and coaxial transition line method respectively. The activated carbon fabric produced at 1200 °C showed maximum shielding effectiveness in both high and low frequency regions. For single layers of 1200 °C carbon fabric, the electromagnetic shielding effectiveness of 40.5 dB, 41.8 dB, 45.1 db and 50.9 dB was found for respective frequencies of 30 MHz, 100 MHz, 1GHz and 1.5 GHz. This behaviour was attributed to increased absorption of electromagnetic radiations due to its higher porosity and also to increased reflections of electromagnetic radiations due to its higher electrical conductivity.

Název v anglickém jazyce

Development of electrically conductive activated carbon fabric from Kevlar fabric for effective EMI shielding applications

Popis výsledku anglicky

In the present work, porous and electrically conductive activated carbon fabric was produced by heating Kevlar fabric wastes using novel single stage carbonization. The influence of carbonization temperature of 800°C, 1000°C and 1200°C on physical and morphological properties of activated carbon fabric was studied from EDX and SEM analysis. Additionally, the electrical conductivity was also measured. At the end, the utility of prepared activated carbon web was investigated for electromagnetic shielding ability in high frequency (i.e. 2.45 GHz) and low frequency regions (i.e. below 1.5 GHz) using waveguide method and coaxial transition line method respectively. The activated carbon fabric produced at 1200 °C showed maximum shielding effectiveness in both high and low frequency regions. For single layers of 1200 °C carbon fabric, the electromagnetic shielding effectiveness of 40.5 dB, 41.8 dB, 45.1 db and 50.9 dB was found for respective frequencies of 30 MHz, 100 MHz, 1GHz and 1.5 GHz. This behaviour was attributed to increased absorption of electromagnetic radiations due to its higher porosity and also to increased reflections of electromagnetic radiations due to its higher electrical conductivity.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Textile Bioengineering and Informatics Symposium Proceedings 2017 - 10th Textile Bioengineering and Informatics Symposium, TBIS 2017

ISBN

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ISSN

1942-3438

e-ISSN

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Počet stran výsledku

8

Strana od-do

1044-1051

Název nakladatele

Textile Bioengineering and Informatics Society

Místo vydání

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Místo konání akce

Wuhan

Datum konání akce

1. 1. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000412149200033