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Received June 1, 2009
Accepted June 8, 2009
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내마모성 색상코팅제를 코팅한 폴리카보네이트 필름의 물리적 특성
The Physical Properties of Polycarbonate Films Coated with Hard and Color Coating Materials
경기대학교 화학공학과, 443-760 경기도 수원시 영통구 이의동 산 94-6번지
Department of Chemical Engineering, Kyonggi University, San 94-6, Iui-dong, Youngtong-gu, Suwon-si, Gyeonggi 443-760, Korea
Korean Chemical Engineering Research, June 2009, 47(3), 316-320(5), NONE Epub 29 June 2009
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Abstract
폴리카보네이트(polycarbonate)는 가볍고, 내충격성 및 가공성이 우수하여 광학기기의 렌즈 및 각종 건축물의 투명소재 등에 유리의 대체품으로서 널리 이용되고 있으나 낮은 표면경도를 가지고 있어 유통 또는 사용시의 접촉으로 인하여 제품에 손상을 줄 염려가 있다. 따라서 본 연구에서는 폴리카보네이트 필름에 아크릴레이트 올리고머, 모노머, 용매, 염료, 실리콘 아크릴레이트, 그리고 광개시제 등을 다양한 함량비율에 따라 혼합한 코팅용액을 제조하고, 구성 성분의 비율에 따른 폴리카보네이트 필름의 표면 경도, 접착력, 그리고 투과율의 변화를 실험하였다. 그 결과 최대 연필 경도가 2H이고, 접착력과 가시광선 투과율이 우수한 코팅용액의 조성을 얻었다. 색상코팅 실험 결과, 기존 산화물 증착에 의해 구현하던 색상을 본 실험에서 제조한 코팅 용액을 사용하여 거의 대부분 구현할 수 있었으며, 이를 바탕으로_x000D_
색상 윈도우 렌즈를 제작한 결과, 매우 깨끗하고 균일한 색상과 표면을 가졌다.
UV curable hard and color coatings were formed on polycarbonate(PC) films. The coating materials were composed of a commercially available end-capped polyester(EB830), diacrylate monomer(HDDA), silicon acrylate, photoinitiator, and organic dye as a coloring agent. The surface properties of coating films were evaluated, and the influences of the compositions of coating materials were investigated. The coating films showed high transmission and good_x000D_
adhesion between coating layer and PC substrate. And the coating films exhibited higher hardness than bare PC film. The coating films with various colors were obtained by wet process, and the clear and color window lenses for mobile phone were prepared successfully.
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