Enhanced microwave absorption of sandwich panels with magnetized carbon fiber corrugated array reinforced PMI foam core

IF 2.7 3区 化学 Q2 POLYMER SCIENCE Journal of Applied Polymer Science Pub Date : 2024-11-03 DOI:10.1002/app.56397
Zhuqing Zhang, Haihong Wu, Lin Jiang, Juntao Zhang, Jiquan Li, Tie Geng
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Abstract

Integrating periodic array structures made of metal wires or conductive inks into the foam core of electromagnetic (EM) wave absorbing sandwich panels can significantly improve broadband absorption performance. However, the complex fabrication process and poor corrosion resistance of these materials limit their practical applications. This work innovatively introduces magnetized carbon fiber (CF) into PMI foam, simultaneously achieving broadband absorption and lightweight characteristics of the sandwich structure through the design of array structure and fiber bundle geometry. Simulation analysis compared the EM absorption performance of sandwich panels with carbonyl iron powder (CIP)/CF tape and helical twisted CIP/CF rope corrugated arrays, determining the optimal array structure parameters, which were then experimentally validated. The experimental results align with the simulations, showing that CIP/CF rope corrugated arrays with an amplitude of 10 mm, a cycle length of 15 mm, and an array spacing of 15 mm provide optimal absorption performance, with a reflection loss below −10 dB across the 9–18 GHz frequency range and a maximum absorption of −33.9 dB at 17 GHz. Finally, the absorption mechanism of these sandwich structures is discussed, highlighting how the synergistic effects between the electromagnetic properties and structural morphology of CIP/CF enhance the absorption performance of the EM absorbing sandwich panel.

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磁化碳纤维波纹阵增强PMI泡沫芯芯夹层板的微波吸收增强研究
将金属丝或导电油墨制成的周期阵列结构集成到电磁波吸收夹层板的泡沫芯中,可以显著提高宽带吸收性能。然而,这些材料复杂的制造工艺和较差的耐腐蚀性限制了它们的实际应用。本工作创新性地将磁化碳纤维(CF)引入PMI泡沫材料中,通过阵列结构和纤维束几何形状的设计,同时实现了夹层结构的宽带吸收和轻量化特性。仿真分析比较了羰基铁粉(CIP)/CF胶带夹层板和螺旋扭曲CIP/CF绳波纹阵列的电磁吸收性能,确定了最优阵列结构参数,并进行了实验验证。实验结果与仿真结果一致,表明CIP/CF绳状波纹阵列在振幅为10 mm、周期长度为15 mm、阵列间距为15 mm时具有最佳的吸收性能,在9-18 GHz频率范围内反射损耗低于- 10 dB,在17 GHz频率范围内最大吸收为- 33.9 dB。最后,讨论了这些夹层结构的吸收机理,强调了CIP/CF的电磁特性和结构形态之间的协同效应如何增强了电磁吸收夹层板的吸收性能。
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来源期刊
Journal of Applied Polymer Science
Journal of Applied Polymer Science 化学-高分子科学
CiteScore
5.70
自引率
10.00%
发文量
1280
审稿时长
2.7 months
期刊介绍: The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.
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