Flexible and Lightweight Non-oxidized Graphene Foam-Based Polymer Composite for Effective Electromagnetic Interference Shielding
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초록
내용
With the advancement in telecommunication technology and electronics, the development of effective electromagnetic interference (EMI) shielding materials is crucial to prevent electronic malfunctions. Graphene foam-based polymer composites have gained attention for EMI shielding due to their superior mechanical properties, lightweight, and high EMI absorption. In this study, non-oxidized graphene flakes (NOGFs) were exfoliated from a graphite intercalation compound. The NOGF foams are infiltrated with poly(dimethylsiloxane) (PDMS) to produce NOGF/PDMS composites. The NOGF/PDMS composites exhibited notably enhanced electrical conductivity and EMI shielding effectiveness (SE) compared to reduced graphene oxide (rGO)/PDMS composites. This improvement is attributed to the non-oxidative exfoliation process, which preserves the sp2 structure of the graphene, maintaining its unique electrical properties. These results underscore the promise of NOGF/PDMS composites for advanced EMI shielding.