基于SCFNA法的FSS吸波材料设计及制备

目的 设计并制备一种与单元电导率匹配、电磁性能优异的柔性频率选择表面吸波材料。方法 首先选择空间限域强制组装法（SCFNA）制造具有优异导电性能的片材，再按圆形谐振单元裁剪并周期性排布在有机介质层内。完成频率选择表面（FSS）的制备后测试其电磁波性能，并与仿真模型优化的结果进行对比。结果 制备的柔性选择表面样件在频率为18～40GHz时吸收率达到96.22%以上。结论 使用空间限域强制组装法设计制备了导电单元，通过调整工艺参数实现对单元电导率的精准调控，成功制备出了一种在18～40 GHz频段下电磁性能优异的高柔性吸波体材料。

Design and Preparation of Frequency Selective Surface Absorber Based on SCFNA

The work aims to design and prepare a flexible Frequency Selective Surface absorber with matching unit conductivity and excellent electromagnetic properties. Firstly, the functional conductive sheet with good conductivity was prepared by Spatial Confining Forced Network Assembly (SCFNA) and then cut into array according to the round resonant unit and encapsulated in the organic dielectric layer. The electromagnetic wave performance of the Frequency Selective Surface absorber was tested and compared with the optimization results of simulation model. The absorptivity of Frequency Selective Surface samples was over 96.22% in 18~40 GHz. Spatial Confining Forced Network Assembly is used to prepare the conductive unit, and the precise regulation of the unit conductivity is achieved by adjusting the process parameters. Thus, a highly flexible absorber with excellent electromagnetic properties in the 18~40 GHz band is successfully prepared.