黄惠平,胡礼初,张海燕,曾国勋,吴子秋.碳纳米管在0.5~ 6GHz低频波段的介电常数和磁导率研究[J].表面技术,2007,36(5):20-23.
HUANG Hui-ping,HU Li-chu,ZHANG Hai-yan,ZENG Guo-xun,WU Zi-qiu.Study on Permittivity and Permeability of Carbon Nanotubes in the Low-frequency Band from 0.5 t0 6 GHz[J].Surface Technology,2007,36(5):20-23 |
| 碳纳米管在0.5~ 6GHz低频波段的介电常数和磁导率研究 |
| Study on Permittivity and Permeability of Carbon Nanotubes in the Low-frequency Band from 0.5 t0 6 GHz |
| 投稿时间：2007-07-05 修订日期：2007-10-10 |
| DOI： |
| 中文关键词: 碳纳米管 纯化 介电常数 磁导率 |
| 英文关键词:Carbon nanotubes Passivation Permittivity Permeability |
| 基金项目:国家自然科学基金( 50372013)；高等学校博士学科点专项科研基金(20050562002)；广东省自然科学基金(036918)；广州市科技计划项目（200522-D2051）；广东省教育厅自然科学研究项目(042005)资助的课题 |
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| Author | Institution |
| HUANG Hui-ping | Faculty of Material and Energy, Guangdong University of Technology, Guangzhou 510006 , China |
| HU Li-chu | Faculty of Material and Energy, Guangdong University of Technology, Guangzhou 510006 , China |
| ZHANG Hai-yan | Faculty of Material and Energy, Guangdong University of Technology, Guangzhou 510006 , China |
| ZENG Guo-xun | Faculty of Material and Energy, Guangdong University of Technology, Guangzhou 510006 , China |
| WU Zi-qiu | Faculty of Material and Energy, Guangdong University of Technology, Guangzhou 510006 , China |
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| 中文摘要: |
| 采用化学气相沉积法制备多壁碳纳米管，运用高温氧化、浓盐酸处理和混酸回流工艺对其进行纯化；采用FTIR、TEM和EDS比较各工艺对碳管表面结构的影响程度，运用同轴波导法测定碳管在0.5- 6CHz低频波段内的介电常数和磁导率数值。结果表明：碳管中无定形碳的存在，有效地提高了碳管的介电损耗；长时间的浓盐酸或混酸处理，会改变碳管的极化特性，对碳管在低频波段的介电常数构成明显的影响。 |
| 英文摘要: |
| Carbon Nano Tubes (CNTs) were prepared by the thermal CVD method, and then purified by high-temperature oxidation, concentrated HCI and H2S04/ HN03 mixture. Then these CNTs were analyzed by FTIR, TEM and EDS, to study the change of external structure. The complex permittivity and permeability were measured from 0. 5 t0 6 GHz by the coaxial-waveguide method. The results show that existence of amorphous carbon can improve dielectric loss. It is also found that concentrated HCI or H2S04/ HN03 treatment for long times will change polarization performance and external structure of CNTs, affect the permittivity of CNTs in low-frequency band finally. |
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