Preparation and Electrical Properties of Epoxy Resin Reinforced with Functionalized Carbon Nanotubes

Abstract

In this study, dielectric properties of nanocomposites of epoxy as a based and multi walled carbon nanotubes before and after functionalization u-CNTs ,f-CNTs respectively as a reinforced materials have been investigated. The solution processing with help of acetone as a solvent have been used to fabricate u-CNTs/epoxy composites, while functionalized MWCNTs with nitric and sulfuric acids used to fabricate f-CNT/epoxy composite with volume fraction(0.0, 0.1 and 0.2) V p % of CNTs. The effects of u-MWNT and f-MWNT with volume fraction loading on dielectric properties (dielectric constant, dielectric loss and impedance) as a function of the frequency (10 2-5x10 6 Hz) at room temperature of an epoxy based nanocomposite system were investigated. The studies showed that dielectric constant, dielectric loss and impedance increased with CNT loading and decreased with frequency increasing. And f-CNT/epoxy composite shows a significant improvement in the dielectric properties when compared with pure epoxy and u-CNTs composites.