Enhanced electromagnetic characteristics of carbon nanotubes/carbonyl iron powders complex absorbers in 2–18 GHz ranges
Enhanced electromagnetic characteristics of carbon nanotubes/carbonyl iron powders complex absorbers in 2–18 GHz ranges
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碳纳米管/羰基铁粉复合吸波体在 2-18 GHz 范围内增强电磁特性
DOI：
10.1016/j.jallcom.2010.09.055
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发表时间：
2011-01
影响因子：
6.2
通讯作者：
Haisheng Qian
中科院分区：
文献类型：
--
作者：
Guoxiu Tong;Wenhua Wu;Qiao Hua;Yuqing Miao;Jianguo Guan;Haisheng Qian
以碳纳米管/羰基铁粉（CNTs/CIPs）复合吸波涂层薄、轻、宽、强为目标，研究了CNTs/CIPs复合吸波涂层在2- 18 GHz的电磁特性。与CIP相比，CNTs/CIP复合材料具有更高的电导率、介电常数和介电损耗，且随着CNTs含量（WCNTs）的增加而逐渐增大。其中，当WCNTs= 2.2%时，在6.4-14.8GHz的频率范围内，对于1.2-2.5mm的涂层厚度，获得了超过-20dB的反射损耗（RL）。特别地，在11.2GHz处发现了-33.3dB的最小RL，对应于1.5mm的匹配厚度。优异的电磁波吸收特性是由于添加少量具有高电导率、介电常数和介电损耗的CNT而导致的适当的EM匹配和增强的吸收能力的结果。因此，CNTs/CIP复合吸收剂具有吸收能力强、厚度薄、重量轻、成本低等优点，有望成为电磁波吸收材料的理想选择。
The electromagnetic (EM) characteristics of the carbon nanotubes/carbonyl iron powders (CNTs/CIPs) complex absorbers synthesized by mixing CNTs with CIPs were studied at 2–18GHz, for the aim of the absorbing coating with thinness, lightness, width, and strength. Compared with CIPs, the CNTs/CIPs composites had higher electrical conductivity, permittivity, and dielectric loss, which gradually increased with the increasing CNTs content (WCNTs). Among them, with WCNTs=2.2%, a reflection loss (RL) exceeding −20dB was obtained in the frequency range of 6.4–14.8GHz for a coating thickness of 1.2–2.5mm. Particularly, a minimum RLof −33.3dB was found at 11.2GHz corresponding to a matching thickness of 1.5mm. The excellent EM-wave absorption properties are a consequence of a proper EM matching and enhanced absorption abilities resulting from the addition of a small quantity of CNTs with high electrical conductivity, permittivity, and dielectric loss. Thus, CNTs/CIPs complex absorbers may be promising candidates for EM-wave-absorption materials with strong-absorption, thin-thickness, light-weight, and low-cost.
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影响因子：
2.1
作者：
Park, MJ;Choi, JH;Kim, SS
通讯作者：
Kim, SS
影响因子：
3.4
作者：
Zhang, X. F.;Dong, X. L.;Choi, C. J.
通讯作者：
Choi, C. J.
影响因子：
3
作者：
X. J. Wei;Jiantang Jiang;L. Zhen;Y. Gong;W. Shao;Chengyan Xu
通讯作者：
X. J. Wei;Jiantang Jiang;L. Zhen;Y. Gong;W. Shao;Chengyan Xu
影响因子：
4.6
作者：
Ping Xu;Xiuli Han;Xiaoman Liu;Binggang Zhang;Changyong Wang;Xiaohong Wang
通讯作者：
Ping Xu;Xiuli Han;Xiaoman Liu;Binggang Zhang;Changyong Wang;Xiaohong Wang
影响因子：
9.9
作者：
Ni, Xiaomin;Zheng, Zhong;Xiao, Xiukun
通讯作者：
Xiao, Xiukun