吸收-反射-传输功率系数指导梯度磁性MXene在电磁波吸收层复合材料中的分布
Yang Zhou1, Wen Zhang1, Dong Pan1
1State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, People's Republic of China.
Nano-micro letters
|February 17, 2025
概括
本研究介绍了一种分层梯度复合结构,使用磁性Ni纳米粒子和MXene纳米板来增强电磁波吸收. 优化的设计实现了在X频段几乎完全的吸收,显著超过其他配置.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 复合材料中吸收剂的形态分布对电磁性质至关重要,但经常被忽视.
- 优化阻抗匹配和电磁损失需要全面考虑材料结构和组成.
研究的目的:
- 调查Ni@MXene在复合材料中的分层排列和梯度度对微波吸收性能的影响.
- 开发一种具有广泛吸收带宽和强烈吸收强度的高性能微波吸收材料.
主要方法:
- 将磁性Ni纳米颗粒纳入MXene纳米片 (Ni@MXene) 中,以实现适当的导电性和透性.
- 制造具有Ni@MXene的梯度度分布 (低至高) 的多层复合材料.
- 对吸收,反射和传输 (A-R-T) 功率系数进行分析,以指导结构优化.
主要成果:
- 层级梯度复合材料 (LG5-10-15) 在2.00-2.20毫米厚度的X波段中显示出完全的吸收覆盖.
- 在9.85GHz时达到68.67dB的最小反射损失 (RLmin),厚度为2.05mm.
- 与非分层,分层和分层下降梯度复合材料相比,性能明显更高 (199.0%至50.6%).
结论:
- 层级梯度结构对于提高微波吸收性能至关重要.
- 这项工作通过控制微观/宏观结构和组件分布,为高性能微波吸收材料提供了一个新的设计策略.
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