| 초록 |
ZrO2 is useful material as high refractive index for providing high performance optical films. But ZrO2-mixed organic resin is hard to coat on film uniformly, because ZrO2 has bad dispersion problem. So it is hard to expect improvement of films refractive index. Therefore, the surface modification with hydrophobic agent is essential for dispersing ZrO2 nanoparticles uniformly into the organic resin. In this study, silane coupling agents modified ZrO2 nanoparticles are synthesized using zirconium n-propoxide, benzyl alcohol, and then modified with two kinds of bifunctional silane coupling agents such as, Methacrylopropyltrimethoxysilane(MPS) and Decyltrimethoxysilane(DTMS). The zirconia particles consisted of intrinsic ZrO2 crystallite and 5-10 nm sizes. The modified zirconia particles show good chemical bonding between ZrO2 and silane coupling agents so, hydrophobicity enhanced in water floating test before modified samples. The refractive index for sample containing modified zirconia shows 1.6 which is higher than that of before modified sample. |
