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

被引：23

作者：

Mehdipour, Aidin ^{[1
]}

Rosca, Iosif Daniel ^{[2
]}

Trueman, Christopher W. ^{[1
]}

Sebak, Abdel-Razik ^{[1
,3
]}

Van Hoa, Suong ^{[2
]}

机构：

[1] Concordia Univ, Dept Elect & Comp Engn, Montreal, PQ H3G 2W1, Canada

[2] Concordia Univ, Concordia Ctr Composites, Dept Mech & Ind Engn, Montreal, PQ H3G 2W1, Canada

[3] King Saud Univ, Prince Sultan Adv Technol Res Inst, Riyadh 11451, Saudi Arabia

来源：

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2012年 / 54卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Electrical conductivity; multiwall carbon nanotubes (MWCNT); nanocomposites; shielding effectiveness (SE); waveguides; ELECTRICAL-PROPERTIES; NANOCOMPOSITES; EFFICIENCY; POLYMER;

D O I：

10.1109/TEMC.2011.2174241

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：28 / 36

页数：9

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