Enhanced microwave absorption property of epoxy nanocomposites based on PANI@Fe3O4@CNFs nanoparticles with three-phase heterostructure
Article
Yang, Lingfeng, Cai, Haopeng, Zhang, Bin, Huo, Siqi and Chen, Xi. 2018. "Enhanced microwave absorption property of epoxy nanocomposites based on PANI@Fe3O4@CNFs nanoparticles with three-phase heterostructure." Materials Research Express. 5 (2). https://doi.org/10.1088/2053-1591/aaab8d
Article Title | Enhanced microwave absorption property of epoxy nanocomposites based on PANI@Fe3O4@CNFs nanoparticles with three-phase heterostructure |
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ERA Journal ID | 211076 |
Article Category | Article |
Authors | Yang, Lingfeng, Cai, Haopeng, Zhang, Bin, Huo, Siqi and Chen, Xi |
Journal Title | Materials Research Express |
Journal Citation | 5 (2) |
Article Number | 025304 |
Number of Pages | 12 |
Year | 2018 |
Publisher | IOP Publishing |
Place of Publication | United Kingdom |
ISSN | 2053-1591 |
Digital Object Identifier (DOI) | https://doi.org/10.1088/2053-1591/aaab8d |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/2053-1591/aaab8d |
Abstract | Novel electromagnetic functionalized carbon nanofibers (CNFs) have been synthesized by coating with Fe3O4 magnetite nanoparticles and conducting polymers polyaniline (PANI) on CNFs through a layer by layer assembly. The Fe3O4@CNFs were first prepared by coating nano-Fe3O4 particles on CNFs via co-precipitation method; Then the PANI was coated on Fe3O4@CNFs using an in situ polymerization process to obtain PANI@Fe3O4@CNFs nanoparticles. The prepared PANI@Fe3O4@CNFs nanoparticles were dispersed in the epoxy matrix to fabricate microwave absorbing nanocomposites. Compared with the Fe3O4@CNFs/epoxy nanocomposites, the PANI@Fe3O4@CNFs/epoxy nanocomposites exhibit better microwave absorbing properties. The composite containing 15 wt% of PANI@Fe3O4@CNFs with the thickness of 2 mm showed a minimum reflection loss (RL) value of -23.7 dB with an effective absorption bandwidth which is about 3.7 GHz (11.9-15.6 GHz) in the frequency range of 1-18 GHz, indicating that it is an attractive candidate for efficient microwave absorber. A potential absorption mechanism was proposed for enhancement of the impedance-matching condition and electromagnetic wave-attenuation characteristic of materials. Specifically, the impedance-matching condition was improved by the combination of conductive polymers and magnetic nanoparticles with CNFs. The electromagnetic wave attenuation characteristic was enhanced by multiple reflections, due to the increased propagation paths. © 2018 IOP Publishing Ltd. |
Keywords | epoxy composites |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Wuhan University of Technology, China |
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