基于超材料的格构增强吸波复合材料的制备与表征

Preparation and Characterization of Lattice-reinforced Microwave-absorbing Composites Based on Metamaterials

基于超材料电磁仿真技术和有限元分析软件,开展夹芯复合材料结构强度与宽频吸波多功能一体化综合设计,研制并制备出由耐海洋环境树脂基玻璃纤维复合材料透波面板、超材料电阻膜、聚甲基丙烯酰亚胺(polymethylmethacrylate,PMI)泡沫、玻璃纤维复合材料格构腹板、碳玻混杂复合材料面板组成的格构增强宽频吸波复合材料。结果表明:格构增强宽频吸波复合材料在2~18 GHz、26.5~40GHz频段内的平板反射率低于-10 dB,且在45°大角域条件下吸波性能良好。该吸波复合材料的平压、弯曲、侧压性能优异,且耐海洋环境性能和工艺适用性良好,在船舶复合材料方面具有较好的工程化应用价值。

Based on the metamaterial electromagnetic simulation technology and finite element analysis software,the multi-functional integrated design of structural strength of sandwich composite materials and wide-band microwave-absorption were carried out,and the lattice reinforced wide-band microwave absorbing composite materials were developed and prepared.The microwave absorbing composite materials are composed of the wave transmitting panel of the resin matrix glass fiber composite material resistant to the marine environment,the metamaterial resistance film,the polymethylmethacrylate(PMI)foam,the glass fiber composite lattice web,and the carbon glass hybrid composite panel.The test results show that the plate reflectivity of the lattice reinforced wide-band absorbing composite is lower than-10 dB in the frequency bands of 2-18 GHz and 26.5-40 GHz and its microwave absorbing performance is good under the conditions of 45°wide angle domain.The microwave-absorbing composite has excellent flat,bending and lateral pressure properties,as well as good marine environment-resistant performance and process applicability,and has good engineering application value in marine composite materials.