三种纳米碳材料吸波涂层设计及性能
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第二炮兵工程学院

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Design and Microwave Absorbing Properties of Carbon Nano Materials Single Layer Microwave Absorbers
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    摘要:

    对纳米炭黑(UC)、特导纳米炭黑(L6)、碳纳米管(CNT)三种材料在8 ~18 GHz 波段吸波涂层进
    行了优化设计及吸波性能分析。结果表明,三种材料的复介电常数随着纳米碳材料质量分数的增加,其实部和
    虚部均以不同的速度增大。利用理论计算的Cole-Cole 图,结合实验测得的复介电常数,求解出这三种材料理
    想的介电常数,材料的质量分数和吸波涂层的匹配厚度。结果表明,CNT 的吸波效果最好,当CNT 质量分数为
    20%涂层、厚度为1. 6 mm 时,反射衰减率在11. 2 ~15 GHz 均优于-10 dB 吸收峰最大值,达到29郾6 dB。

    Abstract:

    In this paper, the microwave absorption properties of three different types of carbon nano materials such as U carbon, carbon nanotube and carbon black have been studied at the frequency band of 8 to 18 GHz. The complex permittivity of carbon nano materials/ paraffin composite with different weight fractions were measured at the frequency band of 8 to 18 GHz. The results show that the real and imaginary of the complex permittivity of the com posites were increased with filler weight and the increasing rates of the real and imaginary part with respect to the filler
    weight were all different. These different rates have great effect on the thickness in the designing the single layer mi crowave absorbers. The match thickness of coating and the weight of filler were obtained by the Cole Cole plot. When 20% mass fraction carbon nanotubes were used with coating thickness of 1. 6 mm, the reflection loss is superior to -10 dB at 11. 2 to 15 GHz and the maximum reflection loss can reach -29. 6 dB.

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张泽洋 刘祥萱 吴友朋 郭磊.三种纳米碳材料吸波涂层设计及性能[J].宇航材料工艺,2011,41(4).

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  • 在线发布日期: 2016-11-28
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