双功能CoNi/MXene@木材具有垂直孔结构,用于电磁波吸收和红外隐形
Yuanyuan Li1, Mingqiang Ning1, Zhe Zou1
1Zhejiang Provincial Key Laboratory of Magnetic Materials and Applications, Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China. ningmingqiang@nimte.ac.cn.
Dalton transactions (Cambridge, England : 2003)
|July 21, 2025
概括
这项研究介绍了一种用于电磁波吸收 (EMA) 和热红外隐蔽的新型木质材料. 该材料通过结构设计和协同作用的介电和磁性损失效应实现了卓越的性能.
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:
- 多功能集成电磁波吸收 (EMA) 材料对于千兆赫兹应用至关重要.
- 通过磁性/介电元件优化电磁参数是高效,轻质吸收器的关键.
- 自然木提供了一个独特的结构模板,用于先进的材料设计.
研究的目的:
- 开发一种使用改性天然木材的新型高性能EMA材料.
- 为了实现协同介电和磁性损失效应,以增强波浪吸收.
- 为了研究材料的热红外隐形能力.
主要方法:
- 通过高温碳化和多多巴胺 (PDA) 修改预处理的天然木材.
- 用水热反应和真空浸将- (CoNi) 和Ti3C2Tx-MXene连续引入碳化木材中.
- 结构设计和材料组成规范,以优化电磁参数.
主要成果:
- 优化的CoNi/MXene@Wood-1.5材料的最小反射损失 (RLmin) 为-56.8dB.
- 实现了覆盖整个X频段的有效吸收带宽 (EAB).
- 该材料表现出稳定的热红外隐形,具有较低的导热率 (0.219-0.267 W m-1 K-1),从298 K到673 K.
结论:
- 通过结构设计和材料组成,成功实现了协同介电和磁性损失效应.
- 开发的CoNi/MXene@Wood材料对电磁波吸收和热红外隐形应用都有很大的潜力.
- 这种方法提供了一个可行的策略,用于从自然资源中创建先进的功能性材料.
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