用电磁波穿透方法实验研究了长度为2 μm和15 μm,直径分别为30、60和100 nm的6种碳纳米管8~12 GHz电磁波衰减特性.结果表明,直径为30 nm时,长度为15 μm的碳纳米管的电磁波衰减能力大于长度2 μm的;直径分别为60 nm和100 nm时,长度为2 μm的碳纳米管的电磁波衰减能力均大于长度为15 μm的.在长度相同的情况下,不同直径碳纳米管的电磁波衰减能力为:60 nm>100 nm>30 nm.6种碳纳米管的电磁波衰减能力为:Ф 60 nm×2 μm>Ф 60 nm×15 μm>Ф 100 nm×2 μm>Ф 100 nm×15 μm>Ф 30 nm×15 μm>Ф 30 nm×2 μm.实验还发现长径比较小的碳纳米管的电磁波衰减能力明显好于长径比较大的磁纳米管的电磁波衰减能力;但碳纳米管长径比与电磁波衰减能力之间并不存在简单的线性关系.
参考文献
[1] | Iijima S.Helical microtubules of graphitic carbon[J].Nature,1991,354:56-58. |
[2] | Rinzler A G,Hafner J H,Nikolaev P,et al.Unraveling nanotubes:Field emission from an atomic wire[J].Science,1995,269:1550-1553. |
[3] | Hiscer M,Becher M,Haluska M,et al.Hydrogen storage in sonicated carbonmaterial[J].Appl Phys A,2001,72(2):129-132. |
[4] | Xu J M.Highly ordered carbon nanotube arrays and IR detection[J].Infrared Physics & Technology,2001,42:485-488. |
[5] | 曹茂盛,高正娟,朱静.CNTs/Polyester复合材料的微波吸收特性研究[J].材料工程,2003(2):34-36.Cao Maosheng,Gao Zhengjuan,Zhu Jing,et al.Research on microwave absorbability towards CNTs/polyester composites[J].Journal of Materials Engineering,2003(2):34-36. |
[6] | 沈曾民,赵东林.镀镍碳纳米管的微波吸收性能研究[J].新型炭材料,2001,16(1):2-3.Shen Zengmin,Zhao Donglin.Study on the microwave absorbing property of composite material containing carbon nanotubes with Ni coating[J].New Carbon Materials,2001,16(1):2-3. |
[7] | 赵东林,卢振明,沈曾民.镀Ni-P和Ni-N合金碳纳米管的磁性能及其复合材料的微波吸收性能[J].复合材料学报,2004,21(3):54-58.Zhao Donglin,Lu Zhenming,Shen Zengmin.Magnetic pro-perty of Ni-P and Ni-N alloy coating carbon nanotubes and microwave absorbing property of their composites[J].Acta Materiae Compositae Sinica,2004,21(3):54-58. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%