Electromagnetic wave-absorbing properties of graphene nanoplatelets - calcium sulfoaluminate cement - based composites

IF 0.5 4区工程技术 Q4 CONSTRUCTION & BUILDING TECHNOLOGY

Cement Wapno Beton Pub Date : 2021-01-01 DOI:10.32047/cwb.2021.26.1.6

L. Xingjun, Y. Duan, Guoqing Chen

引用次数: 0

Abstract

In this paper, graphene nanoplatelets [GNPs] in calcium sulfo-aluminate cement-based composites were prepared. The effects of graphene nanoplatelets content and sample thickness on the absorbing properties of composites were studied and the related mechanism was investigated. The experimental results have shown that the sample with a thickness of 25mm exhibited good electromagnetic wave [EMW] absorption, when the content of gra-phene nanoplatelets is 0.06%. The minimum refl ectivity is -30.8 dB at 8.7 GHz, and the cumulative bandwidth [< -5 dB] is 9.5 GHz. When the content of GNPs is increased to 0.08%, the EMW ab-sorption property of the sample does not enhance remarkably. The absorbing property can be improved by adjusting the thickness of sample. The specimen with a thickness of 35 mm performed excellent broadband absorption characteristics.

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石墨烯纳米薄片-硫铝酸钙水泥基复合材料的电磁波吸收性能

本文在硫铝酸钙水泥基复合材料中制备了石墨烯纳米片[GNPs]。研究了石墨烯纳米片含量和样品厚度对复合材料吸波性能的影响，并探讨了相关机理。实验结果表明，当石墨烯纳米薄片的含量为0.06%时，厚度为25mm的样品具有良好的电磁波吸收性能。在8.7 GHz时，最小反射率为-30.8 dB，累计带宽[< -5 dB]为9.5 GHz。当GNPs的含量增加到0.08%时，样品的EMW吸波性能没有明显提高。通过调整样品的厚度可以提高吸光性能。厚度为35 mm的试样具有优异的宽带吸收特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cement Wapno Beton CONSTRUCTION & BUILDING TECHNOLOGY-MATERIALS SCIENCE, COMPOSITES

CiteScore

1.30

自引率

28.60%

发文量

审稿时长

>12 weeks

期刊介绍： The Publisher of the scientific bimonthly of international circulation, entitled "Cement-Wapno-Beton" ["Cement-Lime-Concrete"], is the Fundacja Cement, Wapno, Beton [Foundation Cement, Lime, Concrete]. The periodical is dedicated to the issues concerning mineral setting materials and concrete. It is concerned with the publication of academic and research works from the field of chemistry and technology of building setting materials and concrete