氧化石墨烯对SiO2多孔陶瓷吸波性能的影响

doi:10.3969/j.issn.0438-1157.2013.07.052

化工学报 ›› 2013, Vol. 64 ›› Issue (7): 2696-2700.DOI: 10.3969/j.issn.0438-1157.2013.07.052

• 材料化学工程与纳米技术 • 上一篇下一篇

氧化石墨烯对SiO₂多孔陶瓷吸波性能的影响

张国英¹, 梁文阁²

1. 浙江商业职业技术学院, 浙江杭州 310053;
2. 山西省焦炭集团公司, 山西太原 030024

收稿日期:2013-04-01 修回日期:2013-04-18 出版日期:2013-07-05 发布日期:2013-07-05
通讯作者: 张国英(1967- ),女,副教授
作者简介:张国英(1967- ),女,副教授。

Effects of graphene oxide on electromagnetic wave absorption properties of porous silica ceramic

ZHANG Guoying¹, LIANG Wenge²

1. Zhejiang Business College, Hangzhou 310053, Zhejiang, China;
2. Shanxi Coke Group Company, Taiyuan 030024, Shanxi, China

Received:2013-04-01 Revised:2013-04-18 Online:2013-07-05 Published:2013-07-05

摘要/Abstract

摘要： 采用颗粒堆积法,以石英砂为骨料,甲基纤维素为黏结剂干压成型后,在1300℃保温1 h烧结制备得到SiO₂多孔陶瓷样品。通过对样品吸波性能的测试,发现样品的吸波带较宽达到9 GHz,反射率约-3 dB。经过浸渍氧化石墨烯后,样品的吸波性能发生较大改变。在氧化石墨烯质量分数为0.004%时,由于氧化石墨烯的涡流损耗,样品的吸波性能较纯SiO₂多孔陶瓷样品的吸波性能提高75%,反射率达到-5 dB。过量的氧化石墨烯使多孔陶瓷样品呈现出对电磁波的全反射。

关键词: 石英砂, 多孔陶瓷, 吸波性能, 石墨烯

Abstract: A particle packing method was developed to prepare porous silica ceramics aggregated by sintering silica powder with methyl cellulose as binding agent at 1300℃ for 1 h.The result of electromagnetic wave absorption showed obvious electromagnetic wave absorption properties with a bandwidth of 9 GHz and-3 dB reflectivity.The electromagnetic wave absorption properties changed after graphene oxide (GO)layers were incorporated into the samples.When the mass fraction of graphene oxide impregnated samples was 0.004%,an increase of 75% in absorption was observed with the greatest reflectivity of-5 dB.The eddy current damping caused by these GO layers was responsible for the enhanced absorption efficiency.While excess GO made the porous sample to be a reflector for incident waves.

Key words: silica, porous ceramic, electromagnetic wave absorption properties, graphene

中图分类号:

TQ028

张国英, 梁文阁. 氧化石墨烯对SiO₂多孔陶瓷吸波性能的影响[J]. 化工学报, 2013, 64(7): 2696-2700.

ZHANG Guoying, LIANG Wenge. Effects of graphene oxide on electromagnetic wave absorption properties of porous silica ceramic[J]. CIESC Journal, 2013, 64(7): 2696-2700.

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氧化石墨烯对SiO₂多孔陶瓷吸波性能的影响

Effects of graphene oxide on electromagnetic wave absorption properties of porous silica ceramic

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