聚丙烯泡沫/铁氧体复合吸波材料研制及应用  

Development and Application of Polypropylene Foam/Ferrite Composite Absorbing Material

作　　者：樊迪刚 李新涛 胡益民 徐杰 陈平[1] 伍瑞新[1] Fan Digang;Li Xintao;Hu Yimin

机构地区：[1]南京大学 [2]南京航天波平电子科技有限公司

出　　处：《安全与电磁兼容》2021年第1期57-61,共5页Safety & EMC

摘　　要：介绍了一种新型发泡聚丙烯微孔泡沫吸波材料,并与铁氧体吸波材料进行复合后,在30~1000 MHz的宽频带范围内有优异的反射性能。将复合后的材料应用在3 m法电磁兼容暗室,其归一化场地衰减性能仿真计算结果在±4 dB以内,其中绝大部分值在±2 dB以内,满足高性能电磁兼容电波暗室的设计要求。发泡聚丙烯微孔泡沫吸波材料相对于传统的聚氨酯泡沫吸波材料具有洁净不脱粉、不吸水、耐热性好、硬度强、长期使用不垂头变形等优点,为下一代暗室的建设提供了更多的选择。A new type of expanded polypropylene microcellular foam absorbing material is introduced.It is combined with ferrite absorbing material and achieves excellent reflectivity in the wide frequency range of 30~1000 MHz.The material is used in the 3 m method EMC anechoic chamber to simulate the performance of the normalized site attenuation and the results are within±4 dB,most of which are within±2 dB,which meets the design requirements of high-performance electromagnetic compatibility anechoic chamber.Compared with the conventional polyurethane foam material,expanded polypropylene microcellular foam absorbing material has a lot of advantages.It provides more choice for the next generation anechoic chamber construction.

关 键 词：电波暗室 吸波材料 发泡聚丙烯 电磁参数 反射率 归一化场地衰减 

分 类 号：TB34[一般工业技术—材料科学与工程]