Microwave absorption properties of Ag naowires/carbon black composites

doi:10.1088/1674-1056/26/2/025207

中国物理B ›› 2017, Vol. 26 ›› Issue (2): 25207-025207.doi: 10.1088/1674-1056/26/2/025207

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Microwave absorption properties of Ag naowires/carbon black composites

Hai-Long Huang(黄海龙), Hui Xia(夏辉), Zhi-Bo Guo(郭智博), Yu Chen(陈羽), Hong-Jian Li(李宏建)

School of Physics and Electronics, Central South University, Changsha 410083, China

收稿日期:2016-07-25 修回日期:2016-10-21 出版日期:2017-02-05 发布日期:2017-02-05
通讯作者: Hui Xia E-mail:xhui73@csu.edu.cn
基金资助:
Project partly supported by the National Natural Science Foundation of China (Grant No. 61275174).

Microwave absorption properties of Ag naowires/carbon black composites

Hai-Long Huang(黄海龙), Hui Xia(夏辉), Zhi-Bo Guo(郭智博), Yu Chen(陈羽), Hong-Jian Li(李宏建)

School of Physics and Electronics, Central South University, Changsha 410083, China

Received:2016-07-25 Revised:2016-10-21 Online:2017-02-05 Published:2017-02-05
Contact: Hui Xia E-mail:xhui73@csu.edu.cn
Supported by:
Project partly supported by the National Natural Science Foundation of China (Grant No. 61275174).

摘要/Abstract

摘要： The composite that can absorb the high-performance electromagnetic (EM) wave is constructed into a sandwiched structure composed of carbon black (CB)/ethylene-vinyl acetate (EVA) and Ag naowires (AgNWs). The AgNWs sandwiched between two CB/EVA layers are used to improve the absorption properties of composite. The effects of EVA-to-CB weight ratio, concentration and diameter of AgNWs with a thickness of 0.4 mm on microwave absorption are investigated. The results indicate that for an EVA-to-CB weight ratio of 1:3, AgNW concentration of 1.0 mg/100 mL, and average diameter of 56 nm, the reflection loss (RL) of the composite is below -10 dB in a frequency range of 9.3 Ghz-18.0 GHz, with the minimum values of -40.0 dB and -25.6 dB at 13.5 GHz and 15.3 GHz, respectively. A finite element method (FEM) is used for calculating the RL of the composite. The calculated results are in agreement with the experimental data.

关键词: microwave absorption, sliver nanowires, finite element method, polymer-based composites

Abstract: The composite that can absorb the high-performance electromagnetic (EM) wave is constructed into a sandwiched structure composed of carbon black (CB)/ethylene-vinyl acetate (EVA) and Ag naowires (AgNWs). The AgNWs sandwiched between two CB/EVA layers are used to improve the absorption properties of composite. The effects of EVA-to-CB weight ratio, concentration and diameter of AgNWs with a thickness of 0.4 mm on microwave absorption are investigated. The results indicate that for an EVA-to-CB weight ratio of 1:3, AgNW concentration of 1.0 mg/100 mL, and average diameter of 56 nm, the reflection loss (RL) of the composite is below -10 dB in a frequency range of 9.3 Ghz-18.0 GHz, with the minimum values of -40.0 dB and -25.6 dB at 13.5 GHz and 15.3 GHz, respectively. A finite element method (FEM) is used for calculating the RL of the composite. The calculated results are in agreement with the experimental data.

Key words: microwave absorption, sliver nanowires, finite element method, polymer-based composites

中图分类号: (Radio-frequency and microwave measurements)

52.70.Gw

黄海龙, 夏辉, 郭智博, 陈羽, 李宏建. Microwave absorption properties of Ag naowires/carbon black composites[J]. 中国物理B, 2017, 26(2): 25207-025207.

Hai-Long Huang(黄海龙), Hui Xia(夏辉), Zhi-Bo Guo(郭智博), Yu Chen(陈羽), Hong-Jian Li(李宏建). Microwave absorption properties of Ag naowires/carbon black composites[J]. Chin. Phys. B, 2017, 26(2): 25207-025207.

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Microwave absorption properties of Ag naowires/carbon black composites

Microwave absorption properties of Ag naowires/carbon black composites

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