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09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능
제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내
Synthesis of Miscible Epoxy-based Perfluorinated Additives for Anti-fingerprint Properties of Flexible Hard Coating and Development of Film Preparation Protocols [동우화인켐㈜ 포스터상]
2017년 8월 23일 11시 11분 26초
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10월 20일 (금요일) 13:00~14:30
, Bongjin Moon
Chemistry, Sogang University, Korea
Department of Chemistry, Sogang University, Korea
In flexible displays, both hardness and flexibility are required to give durability during bending or folding of the screen. To satisfy these requirements, hybrid organic-inorganic materials are widely used. Especially, a silica-based hybrid hard coating film is known to exhibit high pencil hardness, flexibility, and outstanding transparency. However, after curing the hard coating film, it is difficult to introduce another coating layers on the cured film due to the lack of functional groups to react on the surface. One of the strategies to introduce anti-fingerprint (AF) property on the hard coating surface is to add a little amount of curable perfluorinated materials to the film forming solution. This approach is attractive because only a small amount of expensive fluorine-based materials is used, maintaining the hardness of hard coating itself. For example, Daikin Industries, Ltd. was developed an AF additive for hard coating, OPTOOL
-DAC HP. However, this cannot be utilized in epoxy-based hard coating materials because it has acrylate as a curable group. In this research, we have synthesized an epoxy-based AF additive with a long poly(pefluoropropylene oxide) chain for hard coating and developed a film preparation protocol in which less than 1 wt% of the synthesized additive is employed. From inexpensive tris(hydroxymethyl) aminoethane, we introduced three epoxy groups in one molecule as a dendritic structure for high degree of curing reaction and high miscibility with hard coating components. We then optimized the film preparation protocol to obtain hard coating film exhibiting AF properties with the lowest amount of the additive. The prepared AF films showed high water and ink repellency without any loss of inherent hardness of hard coating.
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