Electromagnetic wave absorption properties of the FeSiAl/PLA and FeSiAl-MoS2-Graphene/PLA double-layer absorber formed by fused deposition modeling

作者：Ye, Xicong^*; Yang, Chao; He, Enyi^*; Yang, Peng; Gao, Qi; Yan, Tangming; Yin, Shihao; Ye, Yongsheng; Wu, Haihua^*

来源：Journal of Magnetism and Magnetic Materials, 2023, 565: 170280.

DOI：10.1016/j.jmmm.2022.170280

• Graphene
• FeSiAl
• Double -layer absorber
• 3D printing
• Electromagnetic wave absorption property

The FeSiAl/PLA and FeSiAl-MoS2-Graphene (GR)/PLA composite filaments were prepared through mechanical mixing and melt extrusion process, and the double-layer absorbers while the material of layer 1 is FeSiAl/PLA and the material of layer 2 is FeSiAl-MoS2-GR/PLA were prepared by fused deposition modeling (FDM) 3D printing technology. The results show that the FeSiAl/PLA and FeSiAl-MoS2-GR/PLA double-layer absorber can effectively improve impedance matching. The electromagnetic wave absorption performance is improved under the synergistic effect of multi-loss mechanisms. The minimum reflection loss (RLmin) value of the double-layer absorber is-52.50 dB at 17.76 GHz with the thickness of FeSiAl/PLA layer is 0.6 mm and the total thickness of 1.7 mm. The effective absorption bandwidth (EAB) of the double-layer absorber reaches 5.92 GHz (12.08 similar to 18 GHz) with the thickness of the two layers is 0.8 mm and 1.2 mm, respectively. It is 29.8 % wider than the EAB (4.56 GHz) of the single-layer FeSiAl-MoS2-GR/PLA composite with the same thickness.