Abstract
With the continuous development of electronic products, polymers with EM shielding have received widespread attention. In this study, Fe3O4@RGO was prepared by the hydrothermal synthesis method, which solved the problems of Fe3O4 precipitation and RGO stacking. Using it as a precursor, Fe3O4@RGO/PAM conductive hydrogel was prepared. The research shows that the conductivity of this hydrogel reaches 16.2 S/m at a thickness of 0.3 cm, and the maximum EMI SE is 27.1 dB. Among them, RGO can form a conductive framework, and Fe3O4 can optimize the impedance matching and provide additional magnetic loss. The combined effect of the two makes the hydrogel have excellent EMI SE. In addition, PAM-based hydrogels have good thermal stability, crystallinity, water content, and mechanical properties.
Published Version
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