平面各向异性羰基铁/树脂复合吸波材料的设计  

Design of planar anisotropy carbonyl-iron/epoxy resin composites

作　　者：邓智平[1] 刘朝辉[1] 周国柱[1] 张行[1] 

机构地区：[1]后勤工程学院化学与材料工程系,重庆401311

出　　处：《功能材料》2012年第B11期335-338,共4页Journal of Functional Materials

摘　　要：制备了平面各向异性羰基铁并研究了平面各向异性羰基铁/树脂复合材料的介电常数与磁导率的频谱特性,发现其具有较好的高频磁性,随着平面各向异性羰基铁体积百分含量的增大,复合材料的介电常数和磁导率均增大,介电常数的增加速率快于磁导率的增加速率。依据平面各向异性羰基铁/树脂复合材料的电磁频谱特性,通过阻抗匹配设计方法,优化设计了单层和双层平面各向异性羰基铁吸波复合材料,其中当第1层厚度为0.6mm,第2层厚度为1.7mm时,材料在-10dB以下的频带宽度达到10GHz,最小反射损耗值为-25.4dB。The planar anisotropy carbonyl-iron had been prepared via ball-milling technique and the complex permeability and permittivity spectra of planar anisotropy carbonyl-iron/epoxy resin composites was measured, which indicates a high complex permeability in higher frequency range. When the volume of planar anisotropy carbonyl-iron increase, both coraplex permeability and permittivity increase but the part of complex permittivity was faster. According to the complex permeability and permittivity spectra of planar anisotropy carbonyl-iron/ resin composite, the monolayer and bilayer absorber wear optimized by the impedance matching design method. A double-layer absorber that the thickness of the first layer was 0.6mm, the thickness of the second layer was 1.7mm has a minimum reflection attenuation --25.4dB and the bandwidth under --10dB reaches to 10GHz.

关 键 词：吸波材料 羰基铁 磁导率 反射损耗 

分 类 号：TN383[电子电信—物理电子学]