Electromagnetic wave suppressors derived from crosslinked polymer composites containing functional particles: Potential and key challenges

In recent times researchers have been quite proactive towards the issue of electromagnetic interference (EMI). They have proposed solutions for reduction of this interference by shielding electronic devices. Currently, polymers or polymer composites are preferred materials for EMI shielding application in view of their lightweight and design flexibility. In the present article we have attempted to commemorate the remarkable efforts of various researchers that are reported to tackle EMI issue by developing cross-linked polymer based composites containing micro and nanofillers. Epoxy, polyurethane, elastomer based crosslinked polymer composites are most studied materials and have industrial significance as well. First section briefly explains the need of shielding electronic devices against electromagnetic radiation, followed by list of basic terminology used in this review article. Third section describes the mechanism involved in electromagnetic interference shielding. In the fourth section, we have reviewed various ways to design polymer composites based EMI shielding material, followed by conclusion and outlook.