稀土改性碳纳米管宽带吸波材料

基金项目:

2003年江西省科技厅科研计划资助项目

详细信息

Nano Radar Absorbing Materials with Broad Band

摘要: 以碳纳米管为雷达波吸收剂进行稀土掺杂后,和环氧树脂充分混合,制成复合吸波涂料并涂覆在铝板上制成吸波涂层,使用反射率扫频测量系统检测碳纳米管的吸波性能.结果表明:用适量稀土氧化物改性后,碳纳米管的吸波性能大幅提高,在8.40～16.08GHz频段内,反射率R＜-10dB,带宽达7.68GHz,峰值R=-29.10dB,波峰在10.88GHz.反射率R＜-5dB的带宽达10.60GHz.
- 碳纳米管 /
- 雷达吸波材料 /
- 吸波性能
Abstract: Carbon nanotubes(CNTs) and carbon nanotubes modified by rare earth oxides were used as an absorber of radar waves.The absorber and epoxy resin were blended to prepare radar absorbing materials (RAM) by supersonic dispersion.The polymer pastes were then put into an aluminum matrix to prapare the sample.Carbon nanotubes were characterized by TEM.The radar absorbing properties were tested by RAM measuring system of arch method reflectivity.The radar wave absorbing properties of carbon nanotubes were substantially improved after modification by rare earth oxides.The highest absorbing peak of the sample was -29.10dB at 10.88GHz and had a bandwidth of 7.68 GHz(R＜-10dB) and 10.60GHz (R＜-5dB)respectively.
- carbon nanotube /
- radar absorbing material /
- radar absorbing property

[1]	Sumio Iijima.Helical microtubules of graphitic carbon[J].Nature,1991,354:56-58.
[2]	Salvetat J P,Bonard J M,Thomson N H,et al.Mechanical properties of carbon nanotubes[J].Appl Phys A,1999,69:255-260.
[3]	Demczyk B G,Wang Y M,Cumings J,et al.Direct mechanical measurement of the tensile strength and elastic modulus of multiwalled carbon nanotubes[J].Material Science and Engineering,2002,A334:173-178.
[4]	Savas Berber,Young-Kyum Kwon,David Tomanek.Unusually high thermal conductivity of carbon nanotubes[J].Phys Rev Lett,2000,84:4613-4616.
[5]	Ebbesen T W,Lezec H J,Hiura H,et al.Electrical conductivity of individual carbon[J].Nature,1996,382:54-56.
[6]	Tang Z K,Zhang Lingyun,Wang N,et al.Superconductivity in 4 angstrom single-walled carbon nanotubes[J].Science,2001,292:3462-3465.
[7]	孙哓刚.碳纳米管/聚合物复合吸波材料性能研究[J].塑料,2004,33(5):66-69.
[8]	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.
[9]	沈曾民,赵东林.镀镍碳纳米管的微波吸收性能研究[J].新型碳材料,2001,16(1):1-3.