Electromagnetic shielding effectiveness and dielectric study of polystyrene/aluminum composite by addition of graphite and carbon nanofiber powder

The adoption of 5G mobile technology has the potential of revolutionary enhancement in connectivity and communication that will revolutionize many sectors and improve user experiences. A large demand for smart electronic devices and GHz range communication have led to the technical advancements in t...

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Published in:Journal of materials science. Materials in electronics 2023-09, Vol.34 (27), p.1857, Article 1857
Main Authors: Kumar, Amit, Sachdev, V. K., Chowdhuri, Arijit, Tomar, Monika, Singh, Mahipal
Format: Article
Language:English
Subjects:
Aluminum
Aluminum composites
Aluminum graphite composites
Carbon fibers
Characterization and Evaluation of Materials
Chemistry and Materials Science
Dust
Electromagnetic interference
Electromagnetic shielding
Frequency ranges
Graphite
Hardness
Materials Science
Nanofibers
Network analysers
Optical and Electronic Materials
Polystyrene resins
Superhigh frequencies
User experience
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Summary:The adoption of 5G mobile technology has the potential of revolutionary enhancement in connectivity and communication that will revolutionize many sectors and improve user experiences. A large demand for smart electronic devices and GHz range communication have led to the technical advancements in this field, however, this is affecting the environment by causing electromagnetic interference (EMI) or electromagnetic (EM) pollution. To prevent from electromagnetic pollution, in the present study, composites of polystyrene were synthesized using a solution mixing process with the inclusion of aluminum metal dust, graphite, and carbon nanofibers. The efficiency of composite shielding was evaluated in the X-band (8.2–12.4 GHz) frequency range using a vector network analyzer (VNA). At 12.3 GHz, the overall shielding efficiency of polystyrene–aluminum metal dust and carbon nanofibers was measured to be − 23.53 dB, whereas at 8.2 GHz, it was observed to be − 6.64 dB for polystyrene–aluminum composites and − 14.43 dB for polystyrene–aluminum–graphite composites. Thickness for all the samples was taken as 2 mm. Synthetic composites were characterized by XRD, SEM, and TGA. D-shore hardness tester was employed to gauge the hardness. The fabricated composites are supposed to be a good alternative for applications requiring EM pollution supression or radar absorption.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-023-11232-w