Study of electromagnetic characteristics of polymer materials based on single-walled and multi-walled carbon nanotubes

Fourth interdisciplinary scientific forum with international participation "New materials and promising technologies"

Kuleshov, G.E.^1^2 ; Badin, A.V.^1^2

Laboratory of Radiophysical and Optical Methods of Exploring the Surrounding Environment, National Research Tomsk State University, Tomsk, Russia^1

Department of Radioelectronics, Faculty of Radiophysics, National Research Tomsk State University, Tomsk, Russia^2

关键词: Complex dielectric constant;    Electromagnetic characteristic;    Electromagnetic response;    Frequency dependence;    High-frequency radiation;    Material thickness;    Polymer composite materials;    Polymer materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/525/1/012030/pdf
DOI  :  10.1088/1757-899X/525/1/012030

来源: IOP

【 摘 要 】

The results of the study of the electromagnetic characteristics of polymer composite materials containing various carbon fillers are presented. Samples based on epoxy resin with single-walled and multi-walled carbon nanotubes, as well as conductive ABS plastic with carbon fibers were made. The frequency dependences of the complex dielectric constant on the frequency for these materials are shown. Based on the data obtained, the electromagnetic response from samples of composites located in free space and on the metal, taking into account the thickness, was calculated. The influence of the material thickness on the electromagnetic response from it was simulated. A composite material containing 4 wt.% SWCNTs is effective narrowband absorber at a frequency of 5 GHz, at a thickness of 3.0 mm. Or it can be used as a shielding high-frequency radiation material at frequencies from 7 GHz with a thickness of more than 2.5 mm.