| 초록 |
Silver nanowires (AgNWs) having high aspect ratio show excellent electrical conductivity. However, since the van der Waals force between AgNWs is larger than the attractive force between epoxy and AgNW, they form agglomerates and are not uniformly dispersed in the epoxy resin. In this study, silica nanoparticles (SNPs) showing good dispersibility with epoxy resin were coated on the surface of AgNW by sol-gel method to improve dispersion of AgNW in epoxy resin. Especially, the effect of SNP coating on the dispersibility and electrical properties of epoxy/SNP-AgNW nanocomposites was investigated. As the degree of SNP coating on AgNW surface increases, the dispersibility of AgNW improves but the electrical conductivity of AgNW decreases. The highest electrical conductivity of epoxy/SNP-AgNW nanocomposites was obtained at the AgNW coated with SNP for 2h, and the electrical conductivity at 2.7 vol% of SNP-AgNW was about 10 S/m. |
