李学山,礼嵩明,李勇峰,黄浩,鹿海军.石英纤维增强环氧树脂基复合材料的微波吸收设计[J].包装工程,2024,45(23):120-130.
LI Xueshan,LI Songming,LI Yongfeng,HUANG Hao,LU Haijun.Design of Quartz Fiber Reinforced Epoxy Resin Matrix Composites for Microwave Absorption[J].Packaging Engineering,2024,45(23):120-130. |
| 石英纤维增强环氧树脂基复合材料的微波吸收设计 |
| Design of Quartz Fiber Reinforced Epoxy Resin Matrix Composites for Microwave Absorption |
| 投稿时间：2024-08-15 |
| DOI：10.19554/j.cnki.1001-3563.2024.23.013 |
| 中文关键词: 微波吸收复合材料 有效吸收带宽 超表面 反射率 |
| 英文关键词: microwave absorbing composite effective absorption bandgap metasurface reflection |
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| 中文摘要: |
| 目的 实现石英纤维增强环氧树脂基复合材料在低厚度(2~4 mm)下的宽频微波吸收，拓展有效吸收带宽(Effective Absorption Bandgap，EAB)。方法 基于阻抗匹配与衰减特性设计出石英纤维增强环氧树脂基功能层及其微波吸收复合材料，并利用超表面的电磁谐振增强作用进一步提升EAB。结果 F1功能层具有良好的阻抗匹配特性与高频谐振特性，F2功能层具有强损耗与低频谐振特性;以F1与F2分别为阻抗匹配层与损耗层，设计出的厚度为2.04 mm的微波吸收复合材料在8.80~16.95 GHz具有≤–10 dB的反射率(Reflection，R)，EAB为8.15 GHz，厚度分别为3.06 mm与4.08 mm的微波吸收复合材料也具有良好的宽带吸收性能;超表面的引入能够改善宽频范围内的阻抗匹配，增强微波吸收复合材料的电磁谐振损耗，从而拓展复合材料的EAB，厚度为3.06 mm的复合材料的实测EAB由5.69 GHz拓展到10.34 GHz，且实测反射率变化趋势与设计结果具有一致性，加载超表面后复合材料的力学强度保持率>96%。结论 传统材料的微波吸收机制与超表面的阻抗匹配改善与谐振增强机制相结合可以进一步提升复合材料的微波吸收性能，为后续复合材料的高效微波吸收设计提供一定的参考。 |
| 英文摘要: |
| The work aims to achieve broadband microwave absorption in quartz fiber reinforced epoxy resin matrix composites at low thicknesses (2~4 mm), to extend the Effective Absorption Bandgap (EAB).Quartz fiber reinforced epoxy resin matrix functional layers and microwave absorbing composites were designed based on impedance matching and attenuation properties, and the electromagnetic resonance enhancement of the metasurface was used to further enhance EAB. The results showed that the F1 functional layer possessed good impedance matching and high-frequency resonance characteristics, and the F2 functional layer possessed strong loss and low-frequency resonance characteristics. With F1 and F2 as the impedance matching layer and lossy layer respectively, the designed microwave absorbing composite with the thickness of 2.04 mm had a R of no more than –10 dB at 8.80~16.95 GHz and an EAB of 8.15 GHz, and the microwave absorbing composites with thicknesses of 3.06 mm and 4.08 mm also exhibited favorable broadband absorbing properties; The introduction of the metasurface enhanced the electromagnetic resonance loss of the microwave absorbing composites, thus expanding the EAB of composites. The measured EAB for the composite with a thickness of 3.06 mm was expanded from 5.69 GHz to 10.34 GHz. The variation trend of measured R was consistent with the designed result, and the mechanical strength retention of the composite after loading metasurface was higher than 96%. The above results indicate that the microwave absorption mechanism of conventional materials combined with the impedance matching improvement and resonance enhancement mechanism of the metasurface can further enhance microwave absorption of composites, which provides some reference for the design of subsequent composites for highly efficient microwave absorption. |
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