Simultaneously Improved Thermal Conductivity and Dielectric Properties of NBR Composites by Constructing 3D Hybrid Filler Networks

This work aims to address the heat accumulation issue in electronic components during high-frequency operation through preparation of novel thermally conductive composites. First, polydopamine (PDA) and in-situ growth silver (Ag) nanoparticles are applied for surface modification graphene oxide (GO) carbon nanotube (CNT) prepare [email protected] hybrid filler, respectively. Then, nitrile butadiene rubber (NBR) is chosen as polymeric matrix simultaneously incorporated with both composites excellent thermal conductivity (TC) dielectric constant (ɛr). Due construction 3D conduction networks by utilizing 2D 1D protected], fabricated NBR achieved maximum TC 1.0112 W/(mK), which 636% higher than that neat (0.1373 W (mK)−1). At filler loading 9 vol%, protected]/[email protected]/NBR composite 152% GO/CNT/NBR (0.6660 Moreover, due electron polarization effect GO CNT micro-capacitor Ag nanoparticles, a large ɛr 147.12 attained at 10 Hz Overall, development polymer materials high beneficial enhancing service life safety stability components.