多层孔洞泡沫水泥板夹电阻膜的吸波体吸波特性研究

发布时间：2018-04-13 16:16

本文选题：电磁波吸收 + 宽频　；参考：《新型建筑材料》2017年03期

【摘要】：针对目前水泥基吸波材料研究存在的问题,结合空间电磁波传播原理,在目前研究添加EPS的水泥基吸波材料基础上提出了一种多层孔洞结构型吸波材料设计思路;选用小颗粒EPS和以石墨及炭黑为主要原料制成的纯电阻膜为组分研究了EPS含量和电阻膜阻值组合对水泥基吸波材料吸波性能的影响;设计不同数量、位置和大小的孔洞,在2~18 GHz频段内制备出20 mm厚、吸波性能好(在4 GHz附近反射率最小达到-18.5 dB)、频带宽(反射率小于-10 dB的频带达15.5 GHz)的多层孔洞结构型吸波材料。
[Abstract]:In view of the existing problems in the research of cement-based absorbing materials and combined with the principle of electromagnetic wave propagation in space, a design idea of multi-layer porous structure absorbing materials is put forward on the basis of studying cement based absorbing materials with EPS at present.The effects of EPS content and resistive film resistance value combination on the absorbing properties of cement based absorbing materials were studied by using small particle EPS and pure resistance film made of graphite and carbon black as main raw materials, and the holes of different quantity, position and size were designed.A multilayer porous structure absorbing material with a thickness of 20 mm and a minimum reflectivity of -18.5 dB and a frequency bandwidth of 15.5 GHz at a frequency band of less than -10 dB has been prepared in the 2 ~ (18) GHz band with good absorbing performance (the minimum reflectivity near 4 GHz is -18.5 dB).
【作者单位】：海南大学材料与化工学院;海南热带岛屿资源先进材料教育部重点实验室;
【基金】：科技部创新基金项目(14C26214602911) 海南省重大项目(ZDZX2013015) 海南省产学研一体化项目(ZXY20140046)
【分类号】：TU528

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