A Study on microwave absorption properties of carbon black and Ni0.6Zn0.4Fe2O4 nanocomposites by tuning the matching-absorbing layer structures
Microwave absorption properties were systematically studied for double-layer carbon black/epoxy resin (cB) and ni0.6Zn0.4fe2o4/epoxy resin (F) nanocomposites in the frequency range of 8 to 18 GHz. The ni0.6Zn0.4fe2o4 nanoparticles were synthesized via high energy ball milling with subsequent sinteri...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2020
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/28055/ http://umpir.ump.edu.my/id/eprint/28055/1/A%20Study%20on%20Microwave%20Absorption%20Properties%20of%20Carbon%20Black.pdf |
| Summary: | Microwave absorption properties were systematically studied for double-layer carbon black/epoxy resin (cB) and ni0.6Zn0.4fe2o4/epoxy resin (F) nanocomposites in the frequency range of 8 to 18 GHz. The ni0.6Zn0.4fe2o4 nanoparticles were synthesized via high energy ball milling with subsequent sintering while carbon black was commercially purchased. The materials were later incorporated into epoxy resin to fabricate double-layer composite structures with total thicknesses of 2 and 3 mm. The CB1/F1, in which carbon black as matching and ferrite as absorbing layer with each thickness of 1 mm, showed the highest microwave absorption of more than 99.9%, with minimum reflection loss of −33.8 dB but with an absorption bandwidth of only 2.7 GHz. Double layer absorbers with F1/CB1(ferrite as matching and carbon black as absorbing layer with each thickness of 1 mm) structure showed the best microwave absorption performance in which more than 99% microwave energy were absorbed, with promising minimum reflection loss of −24.0 dB, along with a wider bandwidth of 4.8 GHz and yet with a reduced thickness of only 2 mm. |
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