Properties of microwave absorbers formed by fused deposition modeling with Fe3O4-MWCNTs/PLA composite wire

被引：0

作者：

Huang C. ^{[1
,2
]}

Wu H. ^{[1
,2
]}

Gao Q. ^{[2
]}

Ye X. ^{[1
,2
]}

机构：

[1] Hubei Engineering Research Center for Graphite Additive Manufacturing Technology and Equipment, China Three Gorges University, Yichang

[2] College of Mechanical & Power Engineering, China Three Gorges University, Yichang

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2024年 / 41卷 / 04期

关键词：

carbon nanotube; dielectric loss; Fe[!sub]3[!/sub]O[!sub]4[!/sub; impedance matching; magnetic loss;

D O I：

10.13801/j.cnki.fhclxb.20230902.001

中图分类号：

学科分类号：

摘要：

Electromagnetic absorbing materials with light weight, high strength, wide absorption band, thin thickness and thermal stability are the core requirements for microwave absorption applications. In this paper, Fe3O4-MWCNTs/PLA composite wires were prepared by ball milling mixing and melt extrusion using polylactic acid (PLA) as matrix, Fe3O4 and multi-walled carbon nanotubes (MWCNTs) as fillers, and Fe3O4-MWCNTs/PLA composites were prepared by melt deposition molding (FDM). The phase structure, microstructure and electromagnetic properties of the composites were characterized by XRD, SEM and vector network analyzer, respectively. The composite absorbing material of Fe3O4-MWCNTs/PLA has light weight, good stability, and adjustable dielectric properties, which exhibits excellent broadband absorption ability due to its good impedance matching and electromagnetic wave attenuation ability. The experimental results show that when the Fe3O4 content reaches 25wt% and the thickness is 1.4 mm, the reflection loss reaches −48.5 dB and the effective absorption bandwidth reaches 6.78 GHz (10.38-17.16 GHz), showing excellent microwave absorption performance. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

页码：1954 / 1967

页数：13

共 53 条

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