Abstract
The high electromagnetic interference (EMI) shielding performance composites with light-weight and multi-function have become the main developing orientation in the EMI shielding materials field. This study aims to fabricate lightweight melamine-formaldehyde-based composite (SiO2@Ag@MF) foams with high EMI shielding characteristics through facile and green electroless silver (Ag) plating and polydimethylsiloxane/SiO2 (PDMS/SiO2) coating methods. The results indicated that SiO2@Ag@MF foam possessed outstanding EMI shielding performance with the maximum shielding effectiveness (SET) of 65 dB, low density (0.014–0.019 g/cm3), and high specific shielding effectiveness (SSET) of 3439 dB cm3 g−1 due to the open-cell porous structure and high electroconductive Ag-plated skeleton. Meanwhile, because of the PDMS and SiO2 coating, the composite foam delivers superhydrophobicity, anti-corrosion, and anti-fatigue performance.
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