氮掺杂碳纳米管原位封装磁性粒子异质结构(Fe3O4@NCNTs)及其轻质宽频吸波性能

doi:10.11901/1005.3093.2023.366

材料研究学报

2024, Vol. 38

Issue (6): 430-436 DOI: 10.11901/1005.3093.2023.366

研究论文

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氮掺杂碳纳米管原位封装磁性粒子异质结构(Fe₃O₄@NCNTs)及其轻质宽频吸波性能

徐东卫¹, 张明举¹, 申志豪¹, 夏晨露¹, 徐京满¹, 郭晓琴¹, 熊需海², 陈平³(

)

^1.郑州航空工业管理学院材料学院郑州 450046
^2.沈阳航空航天大学材料科学与工程学院沈阳 110136
^3.大连理工大学精细化工国家重点实验室大连 116024

Microwave Absorption Performance of Encapsulated Magnetic Particles With Nitrogen-Doped Carbon Nanotubes Fe₃O₄@NCNTs

XU Dongwei¹, ZHANG Mingju¹, SHEN Zhihao¹, XIA Chenlu¹, XU Jingman¹, GUO Xiaoqin¹, XIONG Xuhai², CHEN Ping³(

)

^1.School of Material Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, China
^2.Liaoning Key Laboratory of Advanced Polymer Matrix Composites, Shenyang Aerospace University, Shenyang 110136, China
^3.State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China

引用本文:

徐东卫, 张明举, 申志豪, 夏晨露, 徐京满, 郭晓琴, 熊需海, 陈平. 氮掺杂碳纳米管原位封装磁性粒子异质结构(Fe₃O₄@NCNTs)及其轻质宽频吸波性能[J]. 材料研究学报, 2024, 38(6): 430-436.
Dongwei XU, Mingju ZHANG, Zhihao SHEN, Chenlu XIA, Jingman XU, Xiaoqin GUO, Xuhai XIONG, Ping CHEN. Microwave Absorption Performance of Encapsulated Magnetic Particles With Nitrogen-Doped Carbon Nanotubes Fe₃O₄@NCNTs[J]. Chinese Journal of Materials Research, 2024, 38(6): 430-436.

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摘要:

用一步热解工艺制备氮掺杂碳纳米管原位封装金属粒子异质结构(Fe₃O₄@NCNTs)，使用粉末X射线衍射(XRD)、拉曼光谱、扫描电镜(SEM)和透射电镜(TEM)等手段表征其结构和物相组成，基于同轴法测试其电磁参数并用Matlab模拟反射损耗。结果表明：煅烧温度和原料比例对氮元素掺杂磁功能化碳纳米管复合材料的微波吸收性能有重要的影响。当原料比例(金属盐/碳源)为2∶1时，煅烧温度为750℃、低填充量为10%的复合材料具有最优异的吸波性能，其最小反射损耗(RL_min)为-57.7 dB，匹配厚度为2.0 mm时，有效吸收带宽(EAB)达到6.4 GHz。

关键词 ：复合材料, 碳纳米管, 催化生长, 微波吸收性能, 阻抗匹配

Abstract：

One-dimensional carbon nanotubes (CNTs) have made them candidate as lightweight broadband microwave absorption material due to their intrinsic high electrical conductivity, light weight, and high specific surface area etc. In this paper, heterostructures of magnetic particels of iron oxide encapsulated with nitrogen-doped carbon nanotubes (Fe₃O₄@NCNTs) have been successfully constructed in-situ by one-step pyrolysis process. The phase composition and structure of the composites were characterized by powder X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. The electromagnetic parameters were measured by coaxial method and the reflection loss was simulated by Matlab. The results show that the calcination temperatures and the raw material ratio have important effect on the microwave absorption properties of nitrogen-doped magnetic functionalized carbon nanotube composites. The results demonstrated that when the calcination temperature was 750^oC and the raw material ratio (metal salt/carbon source) is 2:1, the Fe₃O₄@NCNTs-750 hybrids with only 10% of functional fillers reached a minimum reflection loss value of -57.7 dB and a maximum effective absorption bandwidth (EAB, below -10 dB) of 6.4 GHz at 2.0 mm.

Key words： composite carbon nanotube catalytic growth microwave absorption performance impedance matching

收稿日期: 2023-07-22

ZTFLH:

TB332

基金资助:河南省青年基金(232300420332);河南省高校重点科研项目(23A430006);郑州航院青年科研专项(23ZHQN01005);国家自然科学基金(51873109);辽宁省兴辽英才计划-创新领军人才项目(XLYC1802085)

通讯作者: 陈平，教授，Pchen@dlut.edu.cn，研究方向为高性能高分子材料与先进聚合物基复合材料结构与功能一体化设计与制备

Corresponding author: CHEN Ping, Tel: (0411)84986100, E-mail: Pchen@dlut.edu.cn

作者简介: 徐东卫，男，1990年生，讲师

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https://www.cjmr.org/CN/10.11901/1005.3093.2023.366 或 https://www.cjmr.org/CN/Y2024/V38/I6/430

图1 在不同温度煅烧的Fe3O4@NCNTs复合材料的XRD谱、拉曼谱和Fe3O4@NCNTs-750的XPS全谱

图2 Fe3O4@NCNTs-X复合材料的SEM和TEM照片

图3 三维和不同匹配厚度条件下的反射损耗

图4 在不同温度煅烧的Fe3O4@NCNTs-X复合材料的介电常数

图5 在不同温度煅烧的Fe3O4@NCNTs复合材料的Cole-Cole环和涡流损耗系数

图6 在不同温度煅烧的Fe3O4@NCNTs-X复合材料的衰减系数

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