三维织物石膏基微波吸收材料的制备及性能

doi:10.11896/j.issn.1005-023X.2018.18.005

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Abstract Gypsum-based microwave absorbing materials were prepared by introducing 3D fabrics, which were coated with carbon black (CB) by impregnation technology, and the absorbing properties of the composites were tested by NRL-arc method in 2—18 GHz frequency range. The results indicate that the reflection loss of the composites increases with the increase of CB content, and the optimum thickness of 3D fabric is 6 mm. When the thickness of 3D fabric is 6 mm and the CB content is 24%, the reflection loss of the composites is less than -5 dB in the whole frequency range of 2—18 GHz, and the lowest reflection loss reaches -28.3 dB. The special structure of 3D fabric can not only improve impedance matching condition, but also provid more wave attenuation path, resulting in the high absorption capacity and wide bandwidth. Moreover, the flexural strength of gypsum composites can be increased by 3D fabrics.

Key words： 3D fabrics gypsum composites absorbing materials reflection loss

Published: 18 October 2018

CLC number:

TB34

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	Articles by authors
	XIE Shuai
	JI Zhijiang
	SHUI Zhonghe
	HOU Guoyan
	LI Bin
	WANG Jing

Cite this article:

XIE Shuai,JI Zhijiang,SHUI Zhonghe, et al. Preparation and Properties of 3D Fabric-Gypsum Based Microwave Absorbing Materials[J]. Materials Reports, 2018, 32(18): 3123-3127.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.18.005 OR http://www.mater-rep.com/EN/Y2018/V32/I18/3123

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