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基于相关文献的模型,研究并设计了一种同时具备宽频带内高透光率和高电磁屏蔽效率的新型碳纳米管薄膜。通过改变薄膜的结构参数进行仿真并对出现的现象进行规律总结,得到最优化结构。实验结果表明,该薄膜在可见光波段的透光率达90%以上,600～900THz频段更高达95%以上,而20GHz处的屏蔽效率为78dB,10GHz处的屏蔽效率达84dB。该实验结果优于目前国内外的最好水平,实现了较理想的高透光与强屏蔽兼备的电磁屏蔽薄膜的设计。同时,对薄膜在电磁波斜入射情况下的性能进行了仿真分析,为薄膜在曲面光学方面的应用奠定了实验基础。
Based on the related literature, a novel carbon nanotube film with both high transmittance and high electromagnetic shielding efficiency in a wide frequency band is studied and designed. By changing the structural parameters of the film to simulate and summarize the phenomena, the optimal structure is obtained. The experimental results show that the transmittance of the film is more than 90% in the visible light band, more than 95% in the frequency band of 600-900 THz, while the shielding efficiency is 78 dB at 20 GHz and 84 dB at 10 GHz. The experimental results better than the best at home and abroad, to achieve a more ideal high transmittance and strong shielding electromagnetic shielding film design. At the same time, the simulation analysis of the film under the condition of oblique incidence of electromagnetic wave has laid the experimental foundation for the application of the film in the surface optical.