Dual 3D Networks of Graphene Nanoplatelets and Graphene Fluoride based Polydimethylsiloxane Composites: An Excellent Electromagnetic Interference Shielding Material with Thermal Conductivity yet Electrical Insulation
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Dual three-dimensional (3D) structures of graphene nanoplatelets (GnP) and graphene fluoride (GF) were fabricated in the polydimethylsiloxane (PDMS) composites for electronic packaging materials with superior electromagnetic interference (EMI) shielding, thermal conductivity (TC), and electrically insulating. The GF/PDMS solution was vacuum infiltrated into the GnP@PDMS foam to fabricate the dual 3D network in the GnP@PDMS/GF composites. The dual structured GnP@PDMS/GF composites showed a excellent EMI SE of 50.13 dB and high TC of 1.47 W·m-1·K-1 and excellent electrical insulating properties as high as 2.82×10−10 S·cm-1. In addition to above, the GnP@PDMS/GF composite was demonstrated to have outstanding mechanical flexibility, thermal stability, and heat dissipating capability. The research was supported by a grant from the Academic Research Program of Korea National University of Transportation in 2023.Chem. Eng. J. 462 (2023) 142017