Work

Enhanced Electromagnetic Absorption Properties of Commercial Ni/MWCNTs Composites by Adjusting Dielectric Properties

Year: 2020

Type: 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. 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 maximum reflection loss (RL) of –40.45 dB at 5.20 GHz with a low filler loading (20 wt%) and wide effective bandwidth (RL<–10 dB) of 13.92 GHz in the thickness range of 1.5–5.0 mm was obtained. Our findings offer an effective and industrialized way to design high performance material to facilitate the research in microwave absorption.

Source: Frontiers in Chemistry

DOI: 10.3389/fchem.2020.00097

Authors: Pei-Yan Zhao, Hui-Ya Wang, Guang-Sheng Wang

Institution: Beihang University

Language: English

Topic: Electromagnetic wave absorption materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,950

Funders: National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities