| 초록 |
Silica aerogels are known as the mesoporous material with the high porosity and the low thermal conductivity. Rigid polyurethane foam is insulation material widely used due to its good mechanical strength and workability. In this study, the rigid polyurethane foam (PU foam) composited with silica aerogels were prepared by compositing method using homogenizer. The change of polyurethane foam with the content of silica aerogels was observed. Silica aerogels were prepared with IPA, HCl, TMCS and water glass via the sol-gel method. Silica aerogels dispersed polyol solution and MDI were used to prepare the polyurethane foams. The particle size and structure were analyzed by HR-TEM and FE-SEM, and the dispersivity of silica aerogels in PU foam were characterized with FE-SEM and EDS. |
