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炭黑-矿棉基双层吸波材料的微波吸收性能
作者:解帅1 2 冀志江1 杨洋1 侯国艳1 王静1 
单位:1. 中国建筑材料科学研究总院 绿色建筑材料国家重点实验室 北京 100024  2. 河北工业大学材料科学与工程学院 天津 300130 
关键词:阻抗匹配 吸波性能 反射率 炭黑 矿棉板 
分类号:TU5; TB34
出版年,卷(期):页码:2015,43(4):526-531
DOI:10.14062/j.issn.0454-5648.2015.04.25
摘要:

 单层结构吸波材料只在较窄的频率范围内具有较好的吸波性能,采用多层结构可以有效改善吸波性能。根据阻抗匹

配原理以及电磁波传输规律,设计制备了具有阻抗渐变特性的双层结构吸波矿棉板,并采用弓形反射法测试了在2~18 GHz
范围的吸波性能。结果表明:阻抗匹配设计是吸波材料设计中的重要环节;双层结构吸波矿棉板的吸波性能随匹配层中炭黑
含量的增加而降低,随吸收层中炭黑含量的增加而增强;当匹配层中炭黑含量为1%,吸收层炭黑含量为5%时,样品的反射
率在2~18 GHz 范围内全部小于–10dB;当匹配层中炭黑含量为1%,吸收层炭黑含量为4%时,最小反射率可以达到–41.5dB。
该吸波矿棉板具有一定的工程应用价值。

 Single-layer wave absorbing materials have a good absorption within narrow bandwidth, and an effective method to

improve the absorbing properties is the design of the multilayer structure. Double-layer wave absorbing mineral wool boards (MWB)
with impedance gradual changing structure were designed based on the impedance matching principle and electromagnetic wave
propagation laws. The reflectivities of the samples were tested by an arch reflecting method in the range of 2–18 GHz. The results
indicate that the impedance matching design is an important link in wave absorbing materials design. The wave absorption properties
of double-layer MWB decrease with increasing carbon black (CB) content in the matching layers, and increase with increasing the
CB content in the absorbing layers. The reflectivity of the sample with 1% CB content in the matching layer and 5% CB content in the
absorbing layer was less than –10 dB in the frequency range of 2–18 GHz. The minimum reflectivity of the sample with 1% CB
content in the matching layer and 4% CB content in the absorbing layer is –41.5 dB for their practical use.
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基金项目:
十二五国家科技支撑计划(2012BAJ02B04-02)资助项目。
作者简介:
解 帅(1988—),男,硕士研究生。
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