Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Preparation of Hard Coating Films with High Refractive Index using Organic-Inorganic Hybrid Coating Solutions

유-무기 하이브리드 코팅 용액을 이용한 고굴절 하드코팅 막의 제조

  • Choi, Jin Joo (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Kim, Nam Uoo (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Ahn, Chi Yong (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
  • 최진주 (건양대학교 화공생명학과) ;
  • 김남우 (건양대학교 화공생명학과) ;
  • 안치용 (건양대학교 화공생명학과) ;
  • 송기창 (건양대학교 화공생명학과)
  • Received : 2014.04.01
  • Accepted : 2014.05.02
  • Published : 2014.06.01
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Abstract

Inorganic-organic hybrid coating solutions were synthesized using titania sol from titanium isopropoxide (TTIP) as an inorganic component and mixture of two or three types of silane coupling agents, such as methacryloxypropyl trimethoxysilane (MPTMS), aminopropyl triethoxysilane (APS), glycidoxypropyl trimethoxysilane (GPTMS) and vinyltriethoxysilane (VTES) as an organic component. The hard coating films were obtained by spin-coating on the polycarbonate sheets and curing the inorganic-organic hybrid coating solutions. The coating films made from the mixture of two types of silane coupling agents showed poor pencil hardness and adhesion, while those from the mixture of three types of silane coupling agents exhibited an improved pencil hardness of 2H~4H and adhesion of 5B. The refractive indexes of coating films were increased from 1.56 to 1.63 at 550 nm by increasing the content of titania sols from 20 to 30 g.

출발물질인 TTIP로부터 이산화티탄 졸을 합성하여 무기물로 사용하고 유기물로서 실란커플링제인 methacryloxypropyl trimethoxysilane (MPTMS), aminopropyl triethoxysilane (APS), glycidoxypropyl trimethoxysilane (GPTMS), vinyltriethoxysilane (VTES)을 2종 혹은 3종씩 복합 사용하여 유-무기 하이브리드 코팅 용액을 제조하였다. 그 후 코팅 용액을 기재인 PC시트 위에 스핀 코팅시키고, 열경화 시켜 하드코팅 막을 제조하였다. 2종 실란커플링제를 혼합하여 제조된 코팅 막들은 기재와의 부착력과 연필경도가 우수하지 못했으나, 3종 실란커플링제를 혼합하여 제조한 코팅 막은 2H~4H의 향상된 연필경도와 5B의 우수한 부착력을 나타내었다. 이산화티탄 졸의 첨가량이 20 g인 코팅 막의 굴절률은 550 nm에서 1.56을 나타내었으나 이산화티탄 졸의 첨가량을 20 g에서 30 g으로 증가시킨 경우, 코팅 막의 굴절률이 1.63으로 향상되었다.

Keywords

References

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