Electromagnetic Interference (EMI) Shielding of Ordered Mesoporous Carbon (OMC)/Paraffin Composites

被引：1

作者：

Wu, Hongjing ^{[1
]}

Wang, Liuding ^{[1
]}

Zhang, Jiangdong ^{[2
]}

Wei, Gao ^{[2
]}

Guo, Shaoli ^{[1
]}

Shen, Zhongyuan ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Appl Phys, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2014年 / 14卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Ordered Mesoporous Carbon; Electromagnetic Interference Shielding; Absorption-Dominant Mechanism; ELECTRICAL-CONDUCTIVITY; NANOTUBE COMPOSITES; SILICA COMPOSITES; EPOXY COMPOSITES; PERMITTIVITY; POLYMERS; FILMS;

D O I：

10.1166/jnn.2014.8738

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ordered mesoporous carbon (OMC)/paraffin composites were successfully prepared by a facile physical mixing method and an EMI SE of 21-23 dB was achieved at the OMC loading of 5.69 wt.% in the X band. This indicates that the composites are very suitable for an application as effective and lightweight EMI shielding materials. The EMI shielding of the composite shows an absorption-dominant mechanism, i.e., a contribution shift from reflection to absorption is observed with the increase in OMC loading and frequency. This could be explained by the intrinsic properties (electrical conductivity, complex permittivity and potential large defects) and novel structure of the composites.

引用

页码：6016 / 6021

页数：6

共 21 条

[1] Microwave absorption enhancement and complex permittivity and permeability of Fe encapsulated within carbon nanotubes [J].

Che, RC ;

Peng, LM ;

Duan, XF ;

Chen, Q ;

Liang, XL .

ADVANCED MATERIALS, 2004, 16 (05) :401-+

[2] Microwave absorbing performances of multiwalled carbon nanotube composites with negative permeability [J].

Deng, Longjiang ;

Han, Mangui .

APPLIED PHYSICS LETTERS, 2007, 91 (02)

[3] The influence of single-walled carbon nanotube structure on the electromagnetic interference shielding efficiency of its epoxy composites [J].

Huang, Yi ;

Li, Ning ;

Ma, Yanfeng ;

Feng, Du ;

Li, Feifei ;

He, Xiaobo ;

Lin, Xiao ;

Gao, Hongjun ;

Chen, Yongsheng .

CARBON, 2007, 45 (08) :1614-1621

[4] High frequency electromagnetic interference shielding response of mixtures and multilayer films based on conducting polymers [J].

Joo, J ;

Lee, CY .

JOURNAL OF APPLIED PHYSICS, 2000, 88 (01) :513-518

[5] ELECTROMAGNETIC-RADIATION SHIELDING BY INTRINSICALLY CONDUCTING POLYMERS [J].

JOO, J ;

EPSTEIN, AJ .

APPLIED PHYSICS LETTERS, 1994, 65 (18) :2278-2280

[6] Synthesis of new, nanoporous carbon with hexagonally ordered mesostructure [J].

Jun, S ;

Joo, SH ;

Ryoo, R ;

Kruk, M ;

Jaroniec, M ;

Liu, Z ;

Ohsuna, T ;

Terasaki, O .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (43) :10712-10713

[7] Electrical conductivity and electromagnetic interference shielding of multiwalled carbon nanotube composites containing Fe catalyst [J].

Kim, HM ;

Kim, K ;

Lee, CY ;

Joo, J ;

Cho, SJ ;

Yoon, HS ;

Pejakovic, DA ;

Yoo, JW ;

Epstein, AJ .

APPLIED PHYSICS LETTERS, 2004, 84 (04) :589-591

[8] Electromagnetic properties of composites containing elongated conducting inclusions [J].

Lagarkov, AN ;

Sarychev, AK .

PHYSICAL REVIEW B, 1996, 53 (10) :6318-6336

[9] Electromagnetic interference (EMI) shielding of single-walled carbon nanotube epoxy composites [J].

Li, Ning ;

Huang, Yi ;

Du, Feng ;

He, Xiaobo ;

Lin, Xiao ;

Gao, Hongjun ;

Ma, Yanfeng ;

Li, Feifei ;

Chen, Yongsheng ;

Eklund, Peter C. .

NANO LETTERS, 2006, 6 (06) :1141-1145

[10] Electrical conductivity and electromagnetic interference shielding characteristics of multiwalled carbon nanotube filled polyacrylate composite films [J].

Li, Yong ;

Chen, Changxin ;

Zhang, Song ;

Ni, Yuwei ;

Huang, Jie .

APPLIED SURFACE SCIENCE, 2008, 254 (18) :5766-5771

← 1 2 3 →