Abstract
Novel PEI/Ti3C2Tx MXenes/Ag nanoparticles composite foams with high strength, low density, and thermal insulation characters have been developed by solution blended process and mold compression methods. The obtained PEI/Ti3C2Tx MXenes/Ag nanoparticles composite foams exhibited high electromagnetic interference shielding effectivity of 28 dB at 8.2–12.4 GHz with low Ti3C2Tx MXenes and Ag nanoparticles loading. Moreover, most of the applied microwave was verified to be absorbed rather than being reflected back. Meanwhile, this foam material possessed a low thermal conductivity of 0.029–0.053 W/(m∙K) and high mechanical strength of 11.59–20.20 MPa. This preparation method is fast, highly reproducible, and scalable, the obtained PEI/Ti3C2Tx MXenes/Ag nanoparticles composite foams with electromagnetic interference (EMI) shielding property may be used in the fields of packaging materials for information storage devices.
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