Materials’ characterization and properties of multiwalled carbon nanotubes from industrial waste as electromagnetic wave absorber

Abstract

The development of high-frequency devices has attracted more research interest in electromagnetic wave-absorbing materials having lightweight, low filler content, thin thickness, minimum reflection loss and broad absorption bandwidth. Nevertheless, none of the materials uses steel waste (mill scale) as a potential lowcost catalyst to synthesize carbon nanotubes (CNT) as an electromagnetic (EM) wave absorber. Hence, multiwalled carbon nanotubes loaded in epoxy resin with an increasing polymer composite thickness of 1 mm, 2 mm, and 3 mm were introduced in this study. With varying