Optimization on microwave absorbing properties of carbon nanotubes and magnetic oxide composite materials
Optimization on microwave absorbing properties of carbon nanotubes and magnetic oxide composite materials
复制标题
碳纳米管与磁性氧化物复合材料吸波性能的优化
DOI：
10.1016/j.apsusc.2017.11.107
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发表时间：
2018-03-15
影响因子：
6.7
通讯作者：
Lu Yigang
中科院分区：
文献类型：
--
作者：
Chen Mingdong;Yu Huangzhong;Lu Yigang
基于电磁场与电磁介质相互作用的物理原理，建立了微波吸收系数（MAC）与材料电磁参数之间的关系。以镍铁氧体（NiFe 2 O 4）、碳纳米管（CNTs）和石蜡复合材料为例，在2-18 GHz频率范围内对CNTs/磁性氧化物复合材料吸波性能进行了优化研究，得出CNTs在复合材料中的质量分数为10%时，在相同频率下吸波性能最佳。通过对复磁导率与MAC之间关系的研究，得出了复磁导率的真实的部分对MAC有明显的影响，增大复磁导率的真实的部分有利于提高吸波性能的另一有趣结论。本文的研究结论可为碳纳米管/铁氧体复合材料吸波性能的优化研究提供有益的参考。(C)2017爱思唯尔B. V.保留所有权利。
Based on the physical principle of interaction between electromagnetic field and the electromagnetic medium, the relationship between microwave absorbing coefficient (MAC) and the electromagnetic parameters of materials was established. With the composite materials of nickel ferrite (NiFe2O4), carbon nanotubes (CNTs) and paraffin as an example, optimization on absorbing properties of CNTs/magnetic oxide composite materials was studied at the frequency range of 2-18 GHz, and a conclusion is drawn that the MAC is the biggest at the same frequency, when the CNTs is 10 wt% in the composite materials. Through study on the relationship between complex permeability and MAC, another interesting conclusion is drawn that MAC is obviously affected by the real part of complex permeability, and increasing real part of complex permeability is beneficial for improving absorbing properties. The conclusion of this paper can provide a useful reference for the optimization research on the microwave absorbing properties of CNTs/ferrite composite materials. (C) 2017 Elsevier B.V. All rights reserved.