AI Article Synopsis
- - The study describes the creation of a Ni/MWCNTs (Nickel/Multiwalled Carbon Nanotubes) absorber, focusing on optimizing its properties by adjusting the amount of filler in a PVDF (Polyvinylidene Fluoride) matrix.
- - It was found that increasing the Ni/MWCNTs content enhances the dielectric properties, with 20 wt% yielding the best impedance matching, which is crucial for effective electromagnetic wave absorption.
- - Notably, the optimal configuration attained a minimum reflection loss of -46.85 dB at 6.56 GHz and a broad effective bandwidth of 14.0 GHz, suggesting the potential for efficient and scalable production of microwave-absorbing materials for industrial
Article Abstract
In this manuscript, we constructed a Ni/MWCNTs absorber and properly adjusted the permittivity resulted from absorber content in the PVDF to optimize impedance matching properties. Both ε' and ε″ increase obviously with the increasing content of Ni/MWCNTs in PVDF, demonstrating that dielectric properties are dependent on the conductivity. Moderate dielectric properties and excellent impedance matching can be obtained for the filler content of 20 wt% Ni/MWCNTs. Reasonable impedance matching allows electromagnetic waves to propagate into the materials and finally realize energy dissipation through dielectric loss and interfacial polarization. As expected, the minimum reflection loss () of -46.85 dB at 6.56 GHz with a low filler loading (20 wt%) and wide effective bandwidth (<-10 dB) of 14.0 GHz in the thickness range of 1.5-5.0 mm was obtained for the commercial Ni/MWCNTs composites, which is promising for mass production in industrial applications. Our findings offer an effective and industrialized way to design high-performance material to facilitate the research in microwave absorption.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7058662 | PMC |
| http://dx.doi.org/10.3389/fchem.2020.00097 | DOI Listing |
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