Development of lightweight Carbon based epoxy nanocomposites for broadband EMI shielding in the X and Ku bands

Abstract

newline The microwaves associated with various electronic circuits couple and interfere with the newlinenormal functioning of electronic gadgets near them which is referred to as newlineElectromagnetic Interference (EMI). EMI can be significantly reduced by using newlineelectromagnetic shields made of different materials. Formerly, metals have been widely newlineused to provide shielding because of their superior electrical, mechanical and thermal newlineproperties, but the drawback associated with metals is that they are very bulky, and most newlineare prone to corrosion. Polymers are lightweight, have good mechanical properties, are newlinehighly processable, and are corrosion resistant, thus making them suitable for replacing newlinemetals in many applications. To qualify the polymers for EMI shielding application, they newlineshould have good electrical properties. Polymer nanocomposites with conductive fillers newlineare excellent substitutes for metals in shielding applications since they combine shielding newlineproperties of fillers and desirable mechanical properties of polymers. Due to their newlineimproved electrical and mechanical properties, such nanocomposites have found newlineapplication as alternative materials in EMI shielding. Thus, identifying a proper substitute newlinefor metallic shield minimizing the weight and cost requirement to prevent newlineelectromagnetic interference is very significant, which is carried out in this work. X and newlineKu-bands of the electromagnetic spectrum are used in defence, satellite, and radar newlinecommunication making the electromagnetic shielding in these two bands vital. newlineDeveloping lightweight carbon-based epoxy nanocomposites for broadband shielding in newlinethe X and Ku-bands is the primary focus of this work. In this work, Carbon Nanotubes