High microwave absorption performances for single-walled carbon nanotube-epoxy composites with ultra-low loadings

doi:10.1088/1674-1056/23/8/088802

Abstract Microwave-absorbing polymeric composites based on single-walled carbon nanotubes (SWNTs) are fabricated via a simple yet versatile method, and these SWNT-epoxy composites exhibit very impressive microwave absorption performances in a range of 2 GHz-18 GHz. For instance, a maximum absorbing value as high as 28 dB can be achieved for each of these SWNT-epoxy composites (1.3-mm thickness) with only 1 wt% loading of SWNTs, and about 4.8 GHz bandwidth, corresponding to a microwave absorption performance higher than 10 dB, is obtained. Furthermore, such low and appropriate loadings of SWNTs also enhance the mechanical strength of the composite. It is suggested that these remarkable results are mainly attributable to the excellent intrinsic properties of SWNTs and their homogeneous dispersion state in the polymer matrix.

Keywords: microwave absorption single-walled carbon nanotube-epoxy composites ultra-low loadings

Received: 04 September 2013
Revised: 14 April 2014
Accepted manuscript online:

PACS:	88.30.rh	(Carbon nanotubes)
	52.70.Gw	(Radio-frequency and microwave measurements)
	95.85.Bh	(Radio, microwave (>1 mm))

Fund: Project supported by the National Basic Research Program of China (Grant Nos. 2012CB933401 and 2014CB643502) and the National Natural Science Foundation of China (Grant Nos. 21374050, 51273093, and 51373078).

Corresponding Authors: Huang Yi, Chen Yong-Sheng
E-mail: yihuang@nankai.edu.cn;yschen99@nankai.edu.cn

Cite this article:

Liang Jia-Jie (梁嘉杰), Huang Yi (黄毅), Zhang Fan (张帆), Li Ning (李宁), Ma Yan-Feng (马延风), Li Fei-Fei (李飞飞), Chen Yong-Sheng (陈永胜) High microwave absorption performances for single-walled carbon nanotube-epoxy composites with ultra-low loadings 2014 Chin. Phys. B 23 088802

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High microwave absorption performances for single-walled carbon nanotube-epoxy composites with ultra-low loadings

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