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

Abstract

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.