APP下载

二维碳化物Ti3C2Tx/磁性材料复合吸波材料研究进展

2021-09-06季惠张恒宇王妮肖红

丝绸 2021年8期

季惠 张恒宇 王妮 肖红

摘要: 二维过渡金属碳化合物Ti3C2Tx,具有优异的介电性能和独特的层状结构,通过介电损耗可实现较好的高频微波吸收性能。引入磁性材料增加磁损耗机制,双重损耗机制有望获得优异的吸波性能且拓宽吸波频带。文章介绍了Ti3C2Tx和磁性材料的电磁性能及吸波机制,分析了Ti3C2Tx分别与铁氧体、磁性金属颗粒及其合金和Ti3C2Tx/磁性材料衍生物复合的吸波性能及电磁波衰减机制。分析表明,Ti3C2Tx与磁性材料复合,其综合吸波性能要优于单一组分,且可以通过改变负载量来调整吸波强度和带宽,为制备低频下吸收强度高的吸波材料提供研究方向。

关键词: 二维碳化物;磁性材料;复合吸波材料;吸波;多重损耗

中图分类号: TB33

文献标志码: A

文章编号: 10017003(2021)08003307

引用页码: 081107

DOI: 10.3969/j.issn.1001-7003.2021.08.007(篇序)

Research progress of two-dimensional carbide Ti3C2Tx/magnetic composite wave absorbing materials

JI Hui1, ZHANG Hengyu1, WANG Ni1, XIAO Hong2

(1.College of Textile, Donghua University, Shanghai 201620, China; 2.Institute of Quartermaster Engineering & Technology,Institute of System Engineering, Academy of Military Science, Beijing 100010, China)

Abstract: Ti3C2Tx, a two-dimensional transition metal carbon compound with excellent dielectric property and unique stratified structure can realize its good microwave absorption performance via dielectric loss. Due to the increase in its magnetic loss mechanism after the introduction of magnetic materials, the dual loss mechanism is expected to realize its excellent microwave absorbing performance while expanding the wave-absorbing frequency band. This paper introduces the electromagnetic properties and wave-absorbing mechanism of Ti3C2Tx and magnetic materials, analyzes the wave-absorbing properties and electromagnetic wave attenuation mechanism of Ti3C2Tx composite with ferrite, magnetic metal particles and their alloys, as well as Ti3C2Tx/magnetic material derivatives are analyzed. Through analysis, it is found that Ti3C2Tx composite with magnetic materials is superior to the single component in terms of the comprehensive wave-absorbing performance. In addition, the wave-absorbing intensity and bandwidth can be adjusted by changing the load. It is expected to provide a research direction for the preparation of wave-absorbing materials with high absorption strength at low frequency.

Key words: two-dimensional carbide; magnetic material; composite wave absorbing material; wave absorption; multiple loss

收稿日期: 20210113;

修回日期: 20210712

基金項目: 国家自然科学基金项目(51673211)

作者简介: 季惠(1996),女,硕士研究生,研究方向为电磁功能纺织材料。通信作者:肖红,高级工程师,76echo@vip.sina.com。

电磁波作为能量或信息传输的载体,已不可避免地存在于生活的各方面,包括各类电子设备、航空航天、医疗设备、武器装备、卫星通讯等。由此带来的电磁辐射和干扰问题,以及雷达隐身技术对吸波材料的极大需求,迫切需要开发高性能电磁波吸收材料[1-3]。以反射电磁波为主的屏蔽材料会造成二次污染,而以吸收为主的屏蔽材料可以将进入材料内部的电磁波能量转换为热能或者其他形式的能量,为从根本上消除电磁波提供了可能[4]。……

登录APP查看全文