According to the results obtained from the discussion and conclusion, it can be reported that:
1- The presence of compounds with two bands can help absorb the electrical part of the wave to absorb electromagnetic waves. In addition, the ultrasonic bath makes the MWCNT segregated more conveniently compared to the milling process.
2- Due to the absence of steel balls used in the milling process, the MWCNTs are not damaged in the ultrasonic intermediate process. Moreover, the production sample with the intermediate milling process causes areas with carbon nanotube agglomeration to be created.
3- The presence of carbon nanotubes that experienced mechanical damage and agglomeration reduces the electrical conductivity in the samples, which ultimately reduces the absorption of electromagnetic waves.
4- The highest reflection losses (RL) observed in the sample contains 5 wt.% carbon nanotubes, which were produced via the ultrasonic bath. Also, its maximum RL value range is 11-9 GHz and about -25 dB. Furthermore, the sample produced in the ultrasonic bath process has a higher magnetic saturation than in the milling process, which causes it to absorb more electromagnetic waves.
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