多层结构设计的超宽带石墨烯泡沫吸波材料  

Ultra wideband graphene foam absorbing materials with multilayer structure design

作　　者：刘文俭 熊家军[1] 何松 罗刚[1] 夏亮[1] 兰旭辉[1] LIU Wenjian;XIONG Jiajun;HE Song;LUO Gang;XIA Liang;LAN Xuhui(Air Force Early Warning Academy,Wuhan 430000,China;The No.31101 st Troop of PLA,Nanjing 210000,China)

机构地区：[1]空军预警学院,武汉430000 [2]31101部队,南京210000

出　　处：《兵器装备工程学报》2022年第2期197-203,共7页Journal of Ordnance Equipment Engineering

基　　金：国防科技创新特区项目(19-163-13-ZD-039-001-02)。

摘　　要：为了解决吸波材料超宽带吸收问题,利用遗传算法在不同厚度不同层数的约束条件下,以吸波带宽为优化目标,对多种石墨烯泡沫吸波材料进行多层组合设计。研究了不同材料种类数、不同层数、不同总厚度的多层组合材料的反射率,并分析了这些因素对有效吸收带宽的影响。研究结果表明:利用电磁参数差异较大的石墨烯泡沫吸波材料组合,进行梯度设计,充分融合不同材料在不同频段的吸收特性,可有效拓宽低频吸收带宽;材料的种类越多,电磁参数分布越广,有效吸收带宽效果越好。To increase the bandwidth of microwave absorbing materials,a composite design method was proposed by using genetic algorithm under the constraints of different thickness and different number of layers.The reflectivity of multi-layer composite materials was studied with different types of materials,different numbers of layers,and different total thicknesses.Then,the influence of these factors on the absorbing bandwidth was analyzed with some examples.The results show that,this composite design of graphene foam absorbing materials with different electromagnetic parameters will effectively broaden the low frequency absorption bandwidth because of fully integrating the absorption characteristics of different materials in different frequency bands.What’s more,the more types of materials are,the wider the distribution of electromagnetic parameters is,and the better the effect of absorption bandwidth is.

关 键 词：石墨烯泡沫材料 多层吸波材料 遗传算法 超宽带 

分 类 号：TM25[一般工业技术—材料科学与工程] TB34[电气工程—电工理论与新技术]