Electromagnetic and microwave absorption properties of coatings based on spherical and flaky carbonyl iron

Single-layer and double-layer polyurethane (PU) matrix coatings containing spherical carbonyl iron (SCI) and flaky carbonyl iron (FCI) were designed and prepared by using a simple and effective manufacturing method, and the thickness of the coatings was kept at 1.5 mm. The complex permittivity, comp...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2019-10, Vol.30 (19), p.18123-18134
Main Authors: Pan, Yunxing, Ma, Guojia, Liu, Xing, Wang, Chenghao, Li, Nan, Wang, Jinyan, Jian, Xigao
Format: Article
Language:English
Subjects:
Absorption spectra
Banded structure
Bandwidths
Carbon
Carbonyls
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coatings
Complex permittivity
Electromagnetic interference
Frequency ranges
Iron
Laboratories
Materials Science
Microwave absorption
Morphology
Nanoparticles
Optical and Electronic Materials
Optimization
Permeability
Polyurethane resins
Production methods
Properties (attributes)
Radar signatures
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Summary:Single-layer and double-layer polyurethane (PU) matrix coatings containing spherical carbonyl iron (SCI) and flaky carbonyl iron (FCI) were designed and prepared by using a simple and effective manufacturing method, and the thickness of the coatings was kept at 1.5 mm. The complex permittivity, complex permeability and absorption properties of the coatings were investigated in the frequency range of 2–18 GHz. The results indicate that all the single-layer and double-layer coatings exhibit excellent absorption properties and wide absorption bands. By optimizing the filler radio and coating structure, the optimal reflection loss (RL) value can reach − 35 dB at 8.6 GHz and make the widest absorption band reach 15.5 GHz (2.5–18.0 GHz) and 4.9 GHz (10.7–15.6 GHz) for RL 
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-02165-4