| 초록 |
With the development of flexible displays, various materials such as films, adhesives, and hard coatings require flexibility. In particular, hard coating materials for flexible displays need not only hard properties but also flexibility to protect flexible substrate. Silsesquioxane materials are attracting attention to realize such high performance properties. Silsesquioxanes have the formula RSiO1.5 (R is an organic group or H). Representative silsesquioxanes structure is polyhedral oligomeric silsesquioxane (POSS) of cage-like oligomer structure and the ladder-like polysilsesquioxane (LPSQ) structure. POSS and LPSQ show various differences in terms of structure and molecular weight. In this study, we analyzed the effect of the silsesquioxane structure on the mechanical properties by introducing cycloaliphatic functionalized POSS and LPSQ. As a result, the LPSQ-coated film showed a pencil hardness of 8H and high flexibility due to uniform coating properties. |
