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李晓杰
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任职 : 爆炸技术研究所所长

性别: 男

毕业院校: 中国科学技术大学

学位: 博士

所在单位: 力学与航空航天学院

学科: 工程力学

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开通时间: 2017.7.19

最后更新时间: 2017.7.19

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Electromagnetic wave absorption properties of multi-walled carbon Nanotubes-anatase composites in 1-18 GHz frequency

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论文类型: 期刊论文

发表时间: 2019-12-01

发表刊物: CERAMICS INTERNATIONAL

收录刊物: EI、SCIE

卷号: 45

期号: 17

页面范围: 22759-22764

ISSN号: 0272-8842

关键字: TiO2; Milling; Functional applications; Impedance

摘要: The multi-walled carbon nanotubes (MWCNTs)-anatase composites were prepared by ball-milling method. The influence of milling conditions (dry-milling or wet-milling) on the phases, morphology, dispersion, and electromagnetic wave absorption properties of the samples was studied. After characterization, the results indicated that ball-milling process had little effect on the phase and the grain size of anatase. The dispersion of MWCNTs in MWCNTs-anatase composites for wet-milling was preferable to that for dry-milling. The composites prepared by dry-milling method had an excellent electromagnetic wave absorbing property. The minimum value of RL was -37.3 dB at 6.1 GHz with the thickness of 3 mm, and the effective bandwidth was 6.1 GHz for the thickness in the range of 2-5 mm. Debye relaxation process, eddy current loss, and impedance matching were the main reasons for the electromagnetic wave absorption of the composites. The MWCNTs-anatase composites could be an easy obtained wave absorption materials.

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