High-performance microwave absorption of flexible nanocomposites based on flower-like Co superstructures and polyvinylidene fluoride

Flower-like Co superstructures were synthesized via a facile hydrothermal process at low temperature; then the flexible Co/PVDF nanocomposites were prepared by combining the Co nanocrystal with a polyvinylidene fluoride (PVDF) matrix. The Co/PVDF hybrids exhibit distinct microwave absorption propert...

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Bibliographic Details
Published in:RSC advances 2015-01, Vol.5 (68), p.55468-55473
Main Authors: Zhang, Xiao-Juan, Lv, Guo-Cheng, Wang, Guang-Sheng, Bai, Tian-Yu, Qu, Jia-Kang, Liu, Xiao-Fang, Yin, Peng-Gang
Format: Article
Language:English
Subjects:
Cobalt
Microwave absorption
Microwaves
Nanocomposites
Noise levels
Polyvinylidene fluorides
Reflection
Superstructures
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Summary:Flower-like Co superstructures were synthesized via a facile hydrothermal process at low temperature; then the flexible Co/PVDF nanocomposites were prepared by combining the Co nanocrystal with a polyvinylidene fluoride (PVDF) matrix. The Co/PVDF hybrids exhibit distinct microwave absorption properties in the range of 2–18 GHz. With filler loading of 25 wt%, the minimum reflection loss reaches −38.9 dB at 6.4 GHz as the thickness is 2.5 mm. The frequency bandwidth less than −10 dB covers from 4.64 to 10.56 GHz by adjusting the weight content from 15 wt% to 40 wt%. The possible microwave absorbing mechanism has been also discussed in detail.
ISSN:2046-2069
2046-2069
DOI:10.1039/C5RA06597F