Effect of AgNPs/reduced graphene oxide nanocomposites on the electrical performance of electrically conductive adhesives

Abstract

Rapid development in electronic products in recent years leads to an increasing demand for electrical conductive adhesives (ECAs) with large electrical conductivity and environmentally friendly. Therefore, how to increase its electrical property meanwhile its other properties can not be affected and even can be enhanced has become the focus of attention. In this study, we chose a green and mild reducing agent glucose, which was synthesised AgNPs/reduced graphene oxide (rGO) nanocomposites based on one-pot method in aqueous solution. The ECAs were prepared by mixing AgNPs/rGO, silver flakes and epoxy. Then we measured the bulk resistivity of ECAs after curing it at 150 °C for two hours. The results showed that when the total amount of the conductive filler maintained at 70 wt%, the mass fraction of AgNPs/rGO reached 0.2 wt%, and the bulk resistivity (8.76×10-5 Ω·cm) was lower than that of filled pure silver flake (1.11×10-4 Ω·cm).