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백정주,신교직,박성만,김영랑,김영훈,장기철,배근열,최경호 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Siloxanes have many commercial and industrial applications such as adhesives, coatings and plastics because of the water repellency, low thermal conductivity, and high flexibility, etc. Especially, water repellency which is one of demands for improving the quality related to a reliability and stability of semiconductors, optical lenses, solar cell, automotive and display materials. In this study, fluorinated siloxane precursors with low surface energy for improving water repellency were synthesized by the sol-gel reaction and characterized. And then transparent water-repellent coating layers were fabricated using synthesized siloxane-modified polysilazane solutions on a plastic substrate by solution process. Surface and optical properties of the layers through curing process were evaluated. The layers appeared transparent hydrophobicity, good chemical resistance, wear resistance and hardness as measuring above 109˚ water contact angle and as 4H pencil hardness at a load of 500 g.