Low content Ag-coated poly(acrylonitrile) microspheres and graphene for enhanced microwave absorption performance epoxy composites
Article
Article Title | Low content Ag-coated poly(acrylonitrile) microspheres and graphene for enhanced microwave absorption performance epoxy composites |
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ERA Journal ID | 211076 |
Article Category | Article |
Authors | Zhang, Bin, Wang, Jun, Chen, Xiaocheng, Su, Xiaogang, Zou, Yi, Huo, Siqi, Chen, Wei and Wang, Junpeng |
Journal Title | Materials Research Express |
Journal Citation | 5 (4) |
Article Number | 045040 |
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/aabd28 |
Web Address (URL) | https://iopscience.iop.org/article/10.1088/2053-1591/aabd28 |
Abstract | Silver nanoparticles was uniformly anchored on the surface of hollow poly(acrylonitrile) microspheres with a facile chemical method using hydrazine hydrate as reductant. Integrating these conducting hollow spheres (PANS@Ag) with chemical reduced graphene oxide (RGO) dispersed in epoxy resin, a lightweight microwave absorber was successfully prepared with enhanced microwave absorption performance. The chemical constitution and surface morphology of as-synthesized RGO and PANS@Ag powders were characterized by XRD, XPS, FE-SEM and SAED, while the electromagnetic properties of these different proportion PANS@Ag-RGO/EP samples were analyzed through vector network analyzer (VNA). The minimum reflection loss (RL) could reach up to-28.1 dB at 8.8 GHz with a layer thickness of 2 mm, and the corresponding effective absorption bandwidth (RL values less than-10 dB) was from 7.9 GHz to 9.8 GHz. However, the dosage of PANS@Ag and RGO was merely 3 wt% and 1 wt%, respectively. As the content of PANS@Ag powders decreased to 1 wt%, the PANS@Ag-RGO/EP samples still retained effective microwave absorption performance and the optimal RL was-14.7 dB. The density of as-prepared absorbers was in the range of 0.49 ∼ 0.87 g cm-3. The low content, low density and enhanced microwave absorption performance endow the hybrid composites with competitive application prospect in stealth technology field. |
Keywords | Ag-coated poly(acrylonitrile) microspheres; low content; microwave absorption; reduced graphene oxide |
Contains Sensitive Content | Does not contain sensitive content |
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 |
Eternal Synthetic Resins, China | |
Wuhan Magnetoelectric of Aerospace Science and Industry, China |
https://research.usq.edu.au/item/yyxxx/low-content-ag-coated-poly-acrylonitrile-microspheres-and-graphene-for-enhanced-microwave-absorption-performance-epoxy-composites
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