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Multiwall Carbon Nanotube-Epoxy Composites With High Shielding Effectiveness for Aeronautic Applications

Title:

Multiwall Carbon Nanotube-Epoxy Composites With High Shielding Effectiveness for Aeronautic Applications

Mehdipour, Aidin and Rosca, Iosif Daniel and Trueman, Christopher W. and Sebak, Abdel-Razik and Hoa, Suong V. (2012) Multiwall Carbon Nanotube-Epoxy Composites With High Shielding Effectiveness for Aeronautic Applications. IEEE Transactions on Electromagnetic Compatibility, 54 (1). pp. 28-36. ISSN 0018-9375

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Official URL: http://dx.doi.org/10.1109/TEMC.2011.2174241

Abstract

Using mass-produced multiwall carbon nanotubes (MWCNTs) from different providers, we have fabricated nanocomposites with high and nearly constant shielding effectiveness (SE) over a wide frequency range up to 26.5 GHz. The MWCNT weight fraction and sample thickness were lower than 10% and 2 mm, respectively. The fabrication process and percolation curves are described. A high dc conductivity of 239.1 S/m was achieved at an MWCNT loading of only 8% by weight. The effect of aspect ratio on shielding performance is addressed. By comparing the measured SE of the composite with predictions from a model of the measurement setup using Microwave Studio, the effective conductivity of the nanocomposite was determined. Since the thickness is very important for shielding analysis, the SE/unit thickness diagram was calculated by using the effective parameters of samples. The results were verified experimentally by measuring the SE of samples with different thicknesses.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Article
Refereed:Yes
Authors:Mehdipour, Aidin and Rosca, Iosif Daniel and Trueman, Christopher W. and Sebak, Abdel-Razik and Hoa, Suong V.
Journal or Publication:IEEE Transactions on Electromagnetic Compatibility
Date:2012
ID Code:974493
Deposited By:ANDREA MURRAY
Deposited On:31 Jul 2012 14:38
Last Modified:31 Jul 2012 14:39
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