Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite

An efficient electromagnetic shielding composite based on multiwalled carbon nanotubes (MWCNTs)-filled styrene acrylic emulsion-based polymer has been prepared in a water-based system. The MWCNTs were demonstrated to have an effect on the dielectric constants, which effectively enhance electromagnet...

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Autores principales: Li, Yong, Chen, Changxin, Li, Jiang-Tao, Zhang, Song, Ni, Yuwei, Cai, Seng, Huang, Jie
Formato: Texto
Lenguaje:English
Publicado: Springer 2010
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2893716/
https://www.ncbi.nlm.nih.gov/pubmed/20596498
http://dx.doi.org/10.1007/s11671-010-9621-2
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author Li, Yong
Chen, Changxin
Li, Jiang-Tao
Zhang, Song
Ni, Yuwei
Cai, Seng
Huang, Jie
author_facet Li, Yong
Chen, Changxin
Li, Jiang-Tao
Zhang, Song
Ni, Yuwei
Cai, Seng
Huang, Jie
author_sort Li, Yong
collection PubMed
description An efficient electromagnetic shielding composite based on multiwalled carbon nanotubes (MWCNTs)-filled styrene acrylic emulsion-based polymer has been prepared in a water-based system. The MWCNTs were demonstrated to have an effect on the dielectric constants, which effectively enhance electromagnetic shielding efficiency (SE) of the composites. A low conductivity threshold of 0.23 wt% can be obtained. An EMI SE of ~28 dB was achieved for 20 wt% MWCNTs. The AC conductivity (σ(ac)) of the composites, deduced from imaginary permittivity, was used to estimate the SE of the composites in X band (8.2–12.4 GHz), showing a good agreement with the measured results.
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spelling pubmed-28937162010-06-30 Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite Li, Yong Chen, Changxin Li, Jiang-Tao Zhang, Song Ni, Yuwei Cai, Seng Huang, Jie Nanoscale Res Lett Nano Express An efficient electromagnetic shielding composite based on multiwalled carbon nanotubes (MWCNTs)-filled styrene acrylic emulsion-based polymer has been prepared in a water-based system. The MWCNTs were demonstrated to have an effect on the dielectric constants, which effectively enhance electromagnetic shielding efficiency (SE) of the composites. A low conductivity threshold of 0.23 wt% can be obtained. An EMI SE of ~28 dB was achieved for 20 wt% MWCNTs. The AC conductivity (σ(ac)) of the composites, deduced from imaginary permittivity, was used to estimate the SE of the composites in X band (8.2–12.4 GHz), showing a good agreement with the measured results. Springer 2010-05-11 /pmc/articles/PMC2893716/ /pubmed/20596498 http://dx.doi.org/10.1007/s11671-010-9621-2 Text en Copyright © 2010 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Nano Express
Li, Yong
Chen, Changxin
Li, Jiang-Tao
Zhang, Song
Ni, Yuwei
Cai, Seng
Huang, Jie
Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite
title Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite
title_full Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite
title_fullStr Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite
title_full_unstemmed Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite
title_short Enhanced Dielectric Constant for Efficient Electromagnetic Shielding Based on Carbon-Nanotube-Added Styrene Acrylic Emulsion Based Composite
title_sort enhanced dielectric constant for efficient electromagnetic shielding based on carbon-nanotube-added styrene acrylic emulsion based composite
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2893716/
https://www.ncbi.nlm.nih.gov/pubmed/20596498
http://dx.doi.org/10.1007/s11671-010-9621-2
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