Graphite nanoplatelet/rubbery epoxy composites as adhesives and pads for thermal interface applications

摘要: Composites of graphite nanoplatelets (GNPs) and rubbery epoxy (RE) resins as adhesives pads are evaluated thermal interface materials (TIM). GNP-15 GNP-5 (15 5 µm across, respectively) were loaded in RE by 3-roll milling to produce GNP/RE composites. The role composite processing techniques on the texture, electrical conductivities compression properties composites was studied compared. Scanning electron microscopy revealed uniform dispersion GNPs RE, regardless loading X-ray diffraction texture measurement showed less platelet alignment at low loadings. Thermal 20 wt% GNP-15/RE (3.29 W/m K) 35 GNP-5/RE (2.36 W/m K) both significantly higher than pure (0.17 W/m K). retained good compliance, compressive moduli being comparable commercial BN/silicone TIM. Although contact resistance for paste, its interfacial transport outperformed GNP/silicone (due RE’s strongly adhesive nature) and, across thick bond lines, reported GNP-pastes. pad had lower other pads. This decreased with increasing applied pressure, pad. thus promising candidates