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化工新型材料  2018, Vol. 46 Issue (10): 97-100    
  新材料与新技术 本期目录 | 过刊浏览 | 高级检索 |
不同形貌碳材料的电磁波吸收性能研究
刘思达,齐暑华*,郑水蓉
西北工业大学理学院应用化学系,西安710129
Study on electromagnetic wave absorbing property of carbon material with different morphology
Liu Sida, Qi Shuhua, Zheng Shuirong
Department of Applied Chemistry,School of Science,Northwestern Polytechnical University, Xi'an 710129
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摘要 通过测量不同形貌碳材料的电磁参数,并模拟计算反射损耗来评估吸波性能的方法,研究了5种不同形貌碳材料[碳微球(CMSs)、纳米石墨微片(NanoG)、碳纳米纤维(CNFs)、螺旋碳纳米管(HCNTs)和石墨烯(GNs)]在X波段(8.2~12.4GHz)的吸波性能。研究结果表明,5种不同形貌碳材料在最佳匹配厚度下的最小反射损耗均<-10dB,对入射电磁波的吸收率达90%;其中GNs的吸波性能最佳,有效吸收频带宽度达2.4GHz(8.2~10.6GHz),在最佳匹配厚度3.4mm条件下,其反射损耗在8.4GHz处达到了-33.6dB,表明对该频率的电磁波吸收率达99.9%。
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刘思达
齐暑华
郑水蓉
关键词:  形貌  碳材料  反射损耗  微波吸收性能    
Abstract: Electromagnetic wave absorbing performances of five carbon materials with different morphologies [carbon microspheres (CMSs),graphite nanosheets (nano G),carbon nanofibers (CNFs),helical carbon nanotubes (HCNTs) and graphenes (GNs)] were studied by measuring electromagnetic parameters and simulating reflection losses numerically in X-band (8.2~12.4GHz).The results showed that five materials all possessed excellent electromagnetic absorbing properties,the minimum reflection losses of which were all less than -10dB at their optimum matching thickness,implying that more than 90% electromagnetic energy was absorbed.Among them,GNs had the best microwave absorption and the effective absorption bandwidth was 2.4GHz(8.2~10.6GHz).The reflection loss reached -33.6dB at 8.4GHz with the best matching thickness of 3.4mm,indicating that the electromagnetic wave absorption rate of GNs was 99.9% at this frequency.
Key words:  morphology    carbon material    reflection loss    microwave absorbing performance
               出版日期:  2018-10-20      发布日期:  2018-11-06      期的出版日期:  2018-10-20
通讯作者:  齐暑华(1949-),女,学士,教授,主要从事高分子材料、复合材料、导热导电及吸波等功能材料研究。   
作者简介:  刘思达(1993-),女,硕士,主要研究方向为电磁波吸收材料。
引用本文:    
刘思达,齐暑华,郑水蓉. 不同形貌碳材料的电磁波吸收性能研究[J]. 化工新型材料, 2018, 46(10): 97-100.
Liu Sida,Qi Shuhua, Zheng Shuirong. Study on electromagnetic wave absorbing property of carbon material with different morphology. New Chemical Materials, 2018, 46(10): 97-100.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2018/V46/I10/97
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