Document Type : Original Reaearch Article
Authors
1
M. Sc., Department of Nanotechnology Engineering, Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, East Azerbaijan, Iran
2
Associate Professor, Department of Organic Chemistry and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, East Azerbaijan, Iran
3
Lecturer, Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Tehran, Iran
4
Ph. D. Student, Department of Organic Chemistry and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, East Azerbaijan, Iran
Abstract
The main objective of this research was to fabricate a flexible Multi-component Nanocomposite (MN) cover with high efficiency to absorb Electro-Magnetic Waves (EMW). For this purpose, nine MNs containing Carbon Nanotubes (CNTs), core-shell structure of Polyaniline-Fe3O4 (PANI), and Nickel Nanowires (NiNW) were prepared with different weight percentages of 2, 4, and 6 with the thickness of 2 mm within the waterborne polyacrylic. Then, their structural characteristics were investigated through Field-Emission Electron Microscopy (FE-SEM). The protection value of the covers against EMW were measured using a Vector Network Analyzer (VNA) machine at the frequency range of 8-12 GHz. The results revealed that followed by an increase in the concentration of the fillers, they formed a dense and conductive network within the matrix, thus leading to more interaction by EMW and eventually more absorption. The simultaneous presence of all three of EMW absorbtion enhancers including CNTs, PANI, and NiNW offered a more effective shielding than that in both single and double components by improving the matrix electrical and magnetic conductivity. Finally, the evaluations proved that the nanocomposite containing the mentioned three fillers with the wight percentage of 6 wt % and effective shielding of 22 dB exhibited the most ideal performance between other nanocomposites over the X-frequency range.
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