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Journal of Materials Science
Erschienen in: Journal of Materials Science 18/2019

18.06.2019 | Chemical routes to materials

Synthesis and characterization of carbonyl iron@epoxy core–shell microspheres for enhanced microwave absorption performance

verfasst von: Yuxin Zuo, Zhengjun Yao, Haiyan Lin, Jintang Zhou, Xinlu Guo, Haishuo Cai

Erschienen in: Journal of Materials Science | Ausgabe 18/2019

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Abstract

Carbonyl iron powder (CIP) coated with a layer of epoxy (EP) shell, denoted as core–shell CIP@EP composites, were designed and prepared via in situ polymerization. The CIP@EP composites containing 4.5–6.8 wt% EP were systematically characterized by X-ray diffraction, Fourier transform infrared spectroscopy, vibrating sample magnetometer, scanning and transmission electron microscopy, and vector network analyzer. The results indicated that CIP@EP composites with 9–254 nm EP shell thickness were successfully prepared through an efficient in situ polymerization method. The particle diameter of core CIP particles was 0.49–4.24 µm. The microwave absorption properties of the microspheres were then experimentally measured, and the CIP@EP composites exhibited a maximum reflection loss value of − 66.2 dB at 7.1 GHz at 2.0 mm absorber thickness. The effective absorbing bandwidth below − 10 dB was 8.0 GHz (from 10.0 to 18.0 GHz). The presence of the EP shell not only enhanced the microwave absorption performance of CIP@EP composites but also improved the overall chemical stability of CIP particles. The as-prepared CIP@EP composites may be a promising candidate for electromagnetic wave absorption applications, and the core–shell structure design can be extended to other microwave absorption materials.
Vorheriger Artikel Solution-processed mixed halide CH3NH3PbI3−xClx thin films prepared by repeated dip coating
Nächster Artikel Tensile properties of CNTs-grown carbon fiber fabrics prepared using Fe–Co bimetallic catalysts at low temperature

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Metadaten
Titel
Synthesis and characterization of carbonyl iron@epoxy core–shell microspheres for enhanced microwave absorption performance
verfasst von
Yuxin Zuo
Zhengjun Yao
Haiyan Lin
Jintang Zhou
Xinlu Guo
Haishuo Cai
Publikationsdatum
18.06.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 18/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-019-03770-8

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