Carbon nanotubes materials and their application to guarantee safety from exposure to electromagnetic fields

Anh Son Hoang, Hong Nhung Nguyen, Hung Thang Bui, Anh Tuan Tran, Van Anh Duong and Van Binh Nguyen

Abstract

Multi-walled carbon nanotubes (MWCNTs)-filled epoxy composites and poly(methyl methacrylate) (PMMA) coatings were prepared by mechanical grinding with the use of a planetary ball mill. Electromagnetic interference shielding effectiveness, electromagnetic absorption and reflection properties of the materials were investigated. With MWCNTs loadings higher than 20 wt%, epoxy/MWCNTs composites and PMMA/MWCNTs coatings also exhibited the full capability of shielding from more than 99% electromagnetic radiation at the 100 MHz–14 GHz frequency range