Chapter 14 - Metallic nanocomposite foams for electromagnetic interference shielding

Abstract

The rapid development of 5G communications and the proliferation of portable electronic devices are leading to an increasing problem of electromagnetic pollution. As a result, the need for materials with high electromagnetic interference (EMI)-shielding properties is becoming increasingly urgent. Considering the need for low density, high structural stability, and low energy consumption in practical applications, lightweight, highly elastic, and low metal consumption EMI-shielding foams have become a hot research topic in the field of retrofitting. In this chapter, first, the need for lightweight materials and the advantages of polymer foaming are briefly explored. Second, the EMI-shielding properties and corresponding mechanisms of metallic foams and metallized polymer-based composite foams are reviewed. Finally, a summary and conclusions from the field will be discussed.