| 초록 |
A flexible hard coating material displaying the anti-scratch properties and foldable flexibility was developed by the design of an organic-inorganic hybrid coating material employing an alkoxysilyl-functionalized polyrotaxane cross-linker (PRX_Si1). The PRX_Si1 has a molecular necklace-like structure that can form organic-inorganic cross-linking points and provide large molecular movements. It was postulated that the scratch resistance and flexibility could be simultaneously increased due to the hybrid cross-linking points and dynamic molecular movements. To confirm this hypothesis, the properties of the PRX_Si1-based hard coating material were analyzed by TEM, SAXS, tensile, pencil hardness, and scratch tests. The PRX_Si1-based hard coating material could form homogeneously dispersed siloxane nano clusters, and the strain at breaking point was three times higher than that of a commercial hard coating material. |
