| 초록 |
An organic-inorganic hybrid coating material including an alkoxysilyl-functionalized polyrotaxane cross-linker(PRX_Si1) enables the coating material to display foldable flexibility and anti-scratch property. The PRX_Si1 has a molecular necklace-like structure that can form organic-inorganic cross-linking points and provide large molecular sliding motion. It was assumed that the flexibility and scratch-resistance could be simultaneously increased due to the hybrid cross-linking points and dynamic molecular movements. To verify 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 nanoclusters, and the strain at breaking point was three times higher than that of a commercial hard coating material. |
