Effect of Multiwalled Carbon Nanotubes on the Electromagnetic Interference Shielding Properties of Polyimide/Carbonyl Iron Composites

被引:32
作者
Wang, Hongyu [1 ]
Zhu, Dongmei [1 ]
Zhou, Wancheng [1 ]
Luo, Fa [1 ]
机构
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
MICROWAVE-ABSORPTION; COMPLEX PERMITTIVITY; COMPOSITES; FABRICATION;
D O I
10.1021/acs.iecr.5b01182
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Electromagnetic interference (EMI) shielding materials with polyimide resin as matrix and hybrid fillers (carbonyl iron and multiwalled carbon nanotubes (MWCNTs)) as fillers were prepared, and their electromagnetic and EMI properties were investigated in the frequency range of 8.2-12.4 GHz. The microstructures of the composites show a uniform dispersion of the hybrid fillers. The effective complex permittivity and the EMI effectiveness of the composites increased with increase in the MWCNTs content. When the content of MWCNTs was 4 wt %, the effective complex permittivity and EMI effectiveness could reach 66.5 + 45.5 and 24 dB. The average values of the surface reflection (SER) and the internal absorption (SEA) increased 0.7 and 2.1 dB for 4 wt % MWCNTs composites, respectively, after the composites were heat treatment at 300 degrees C. Those results indicated that the polyimide matrix composites could be used as effective EMI shielding materials.
引用
收藏
页码:6589 / 6595
页数:7
相关论文
共 42 条
[1]   Dielectric relaxation in particle-filled polymer: Influence of the filler particles and thermal treatments [J].
Adohi, B. J. -P. ;
Brosseau, C. .
JOURNAL OF APPLIED PHYSICS, 2009, 105 (05)
[2]   Electromagnetic interference (EMI) shielding effectiveness of PP/PS polymer blends containing high structure carbon black [J].
Al-Saleh, Mohammed H. ;
Sundararaj, Uttandaraman .
MACROMOLECULAR MATERIALS AND ENGINEERING, 2008, 293 (07) :621-630
[3]   EMI shielding effectiveness of carbon based nanostructured polymeric materials: A comparative study [J].
Al-Saleh, Mohammed H. ;
Saadeh, Walaa H. ;
Sundararaj, Uttandaraman .
CARBON, 2013, 60 :146-156
[4]   Electromagnetic interference shielding mechanisms of CNT/polymer composites [J].
Al-Saleh, Mohammed H. ;
Sundararaj, Uttandaraman .
CARBON, 2009, 47 (07) :1738-1746
[5]  
Anh Son Hoang, 2011, Advances in Natural Sciences: Nanoscience & Nanotechnology, V2, DOI 10.1088/2043-6262/2/2/025007
[6]  
[Anonymous], 1960, Transport Phenomena
[7]  
Bouazzaoui S. E., 2009, J APPL PHYS, V106
[8]   Dielectric and microstructure properties of polymer carbon black composites [J].
Brosseau, C ;
Boulic, F ;
Queffelec, P ;
Bourbigot, C ;
LeMest, Y ;
Loaec, J ;
Beroual, A .
JOURNAL OF APPLIED PHYSICS, 1997, 81 (02) :882-890
[9]   Mechanical fatigue and dielectric relaxation of carbon black/polymer composites [J].
Brosseau, C. ;
Mdarhri, A. ;
Vidal, A. .
JOURNAL OF APPLIED PHYSICS, 2008, 104 (07)
[10]   Fabrication of highly ordered polymer/graphite flake composite with eminent anisotropic electrical property [J].
Chen, Guohua ;
Wang, Haiquan ;
Zhao, Weifeng .
POLYMERS FOR ADVANCED TECHNOLOGIES, 2008, 19 (08) :1113-1117