宽频带周期吸波结构设计及3D打印  

Wide-Band Periodic Absorbing Structure Designs and 3D Printing

作　　者：周傲博 汪艳[1] ZHOU Aobo;WANG Yan(School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430200,China)

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430200

出　　处：《塑料工业》2024年第7期83-90,共8页China Plastics Industry

基　　金：3D打印聚合物及复合材料广东省企业重点实验室项目(2018B030323001)。

摘　　要：在轻量化吸波结构的设计中,在减轻质量的同时保持吸波性能是一个巨大的挑战。本文以导电丙烯腈-丁二烯-苯乙烯共聚物(ABS)为吸波材料,设计了不同的吸波结构,采用CST Studio Suite仿真软件优化了吸波结构的几何参数,并通过熔融沉积(FDM)3D打印技术制备出优化的吸波结构进行实验验证,研究了导电ABS的打印参数及不同吸波结构的吸波性能。结果表明,打印温度对打印试样力学性能有一定影响,打印温度为265℃时,打印试样的综合力学性能最佳。3D打印的蜂窝吸波结构的最低反射损耗为-19.1 dB,有效频宽达到5.4 GHz,而模拟最低反射损耗-36.9 dB,有效频宽为6.1 GHz;木堆吸波结构的最低反射损耗达到-21.0 dB,有效频宽为10.6 GHz,优于模拟值(最低反射损耗-18.3 dB,有效频宽5.9 GHz);角锥吸波结构的最低反射率达到-40.9 dB,有效频宽为12.0 GHz,模拟最低反射损耗-35 dB,有效频宽为13.2 GHz。不同填充率对于角锥结构吸波性能有影响,在填充率100%的情况下,达到最低反射损耗,在填充率30%的情况下,有效吸波频宽达到最宽。这项研究为宽频吸波材料的设计和制备提供了新的思路,对于电磁波吸收领域的发展和应用具有重要的指导意义。In the design of lightweight absorbing structures,one challenge lies in maintaining the absorbing performance while reducing weight.This paper utilized conductive acrylonitrile-butadiene-styrene copolymer(ABS)as the absorbing material to design various absorbing structures.The geometric parameters of these structures were optimized using the CST Studio Suite simulation software,and the optimized designs were fabricated using the fusion deposition molding(FDM)3D printing technology for experimental verifications.The printing parameters of conductive ABS and the absorption properties of different structures were investigated.The results indicate that the printing temperature has a certain influence on the mechanical properties of the printed samples,and the mechanical properties of printed samples are optimal at a printing temperature of 265℃.For the 3D printed honeycomb absorbing structure,it achieves a minimum reflection loss of-19.1 dB with an effective bandwidth reaching 5.4 GHz,whereas the simulations yield a minimum reflection loss of-36.9 dB and an effective bandwidth of 6.1 GHz.For the wood pile absorbing structure,it exhibits a minimum reflection loss of-21.0 dB and an effective bandwidth of 10.6 GHz,surpassing the simulated values with a minimum reflection loss of-18.3dB and an effective bandwidth of 5.9 GHz.Furthermore,the angular cone absorbing structure demonstrates a minimum reflection loss of-40.9 dB and an effective bandwidth of 12.0 GHz,whereas the simulations yield a minimum reflection loss of-35 dB and an effective bandwidth of 13.2 GHz.Additionally,different filling rates have varying effects on the absorption performances of angular cone structures.The lowest reflection loss is achieved at a filling rate of 100%.The widest effective absorption bandwidth is achieved at a filling rate of 30%.This study provides novel insights for the designs and preparations of wideband absorbing materials,and offers important valuable guidance for the developments and applications of electromagnetic wave absor

关 键 词：熔融沉积成型 导电丙烯腈-丁二烯-苯乙烯共聚物 吸波结构 打印工艺 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]