Composites with hollow structures have received attention worldwide for microwave absorption because of their light weight, high strength and unique wave absorption properties. In this study, the complex permittivity and complex permeability were determined for epoxy resin (EP) with different carbonyl iron particle (CIP) contents. These results were used to design a series of CIP/EP composites with novel lightweight lattice structures and different macrosized hollow spheres as fillers. Scanning electron microscopy (SEM) was used to analyze the morphology of these hollow spheres lattice composites, and the NRL-arc method was applied to study the microwave absorption. Compared with traditional solid structures, the CIP/EP hollow spheres lattice composites (80-wt% CIP/EP hollow spheres as filler and 40-wt%CIP/EP as matrix) exhibit unique microwave absorption performance with a minimum reflection loss (RL) of −20.8 dB and an effective absorption band (RL < -10 dB) of 2.6 GHz (11.3 GHz – 13.9 GHz).

具有中空结构的复合材料因其重量轻、强度高和独特的吸波性能而受到世界范围内微波吸收的关注。在本研究中，测定了具有不同羰基铁颗粒 (CIP) 含量的环氧树脂 (EP) 的复介电常数和复数磁导率。这些结果用于设计一系列具有新型轻质晶格结构和不同宏观尺寸的空心球作为填料的 CIP/EP 复合材料。使用扫描电子显微镜（SEM）分析这些空心球晶格复合材料的形貌，并应用NRL-arc方法研究微波吸收。与传统的实体结构相比，