Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)纳米复合材料的吸波和电磁屏蔽性能与机制  

Behavior and Mechanism of Microwave Absorbing and Electromagnetic Interference Shielding of Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)Nanocomposites

作　　者：李月霞 吴梦 纪子影 刘璐 应国兵[1] 徐鹏飞[2] LI Yuexia;WU Meng;JI Ziying;LIU Lu;YING Guobing;XU Pengfei(College of Mechanics and Materials,Hohai University,Nanjing 211100,China;Institute of Marine Equipment and Underwater Technology,Hohai University,Nanjing 211100,China)

机构地区：[1]河海大学力学与材料学院,南京211100 [2]河海大学海工装备与水下技术研究所,南京211100

出　　处：《材料导报》2024年第9期21-27,共7页Materials Reports

基　　金：国家自然科学基金(11872171);江苏省海洋科技创新项目(HY2018⁃15)。

摘　　要：在电磁屏蔽领域,铁氧体是常用的涂覆型吸波剂,但以Fe_(3)O_(4)为首的铁氧体存在一些不足。本研究采用冷冻干燥的方法成功制备了花苞状Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)复合材料,Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)复合材料的花苞状结构对电磁波的多重反射、界面极化和电磁耦合作用等使复合材料具有更好的微波吸收性能。当频率为6.74 GHz时,最小反射损耗达到-51.41 dB,对应的匹配厚度为2.8 mm,这意味着它可以吸收99.99928%的电磁波。本研究中特殊的花苞状Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)复合材料表现出优异的吸波性能,在电磁屏蔽领域具有良好的应用前景。In the field of electromagnetic interference shielding,ferrite is a commonly used coated microwave absorber,but there are some shortcomings in Fe_(3)O_(4),the leading of ferrite.Herein bud-like Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)composites were successfully prepared by freeze-drying.The multiple reflections of electromagnetic waves caused by bud-like structure,interface polarization and electromagnetic coupling result in a high microwave absorption performance of the Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)composite.When the frequency is 6.74 GHz,the minimum reflection loss is-51.41 dB with the corresponding matching thickness of 2.8 mm,which indicates that it has 99.99928%absorption of electromagnetic wave.The Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)composites with bud-like structure exhibit superior microwave absorbing properties which demonstrate a promising application in electromagnetic interference shielding field.

关 键 词：MXene Ti_(3)C_(2)T_(x)/Fe_(3)O_(4)复合材料 吸波 电磁屏蔽 吸波剂 

分 类 号：TB34[一般工业技术—材料科学与工程]