Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Preparation of UV Cured Hard Coating Films Using Polysilazane on Plastic Substrates

플라스틱 기재 위에 polysilazane을 이용한 UV 경화형 하드코팅 도막 제조

  • Yang, Jun Ho (Department of Biomedical Materials, Konyang University) ;
  • Cho, Yong Ju (Research Institute of YooLim Specialty Chemicals Co.) ;
  • Song, Ki Chang (Department of Biomedical Materials, Konyang University)
  • 양준호 (건양대학교 의료신소재학과) ;
  • 조용주 (유림특수화학(주) 기술연구소) ;
  • 송기창 (건양대학교 의료신소재학과)
  • Received : 2017.11.23
  • Accepted : 2017.12.15
  • Published : 2018.04.01
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Abstract

UV-curable hard coating solutions were prepared by mixing organic or inorganic polysilazane with urethane acrylate. UV-cured hard coating films were also obtained by flow coating, subsequently UV-curing on polymethylmethacrylate (PMMA) sheets. The effect of types and amounts of polysilazane was investigated on properties of obtained coating films. As a result, the coatings obtained by using organic polysilazane showed a high hydrophobic property with water contact angle of $95^{\circ}$, pencil hardness of 7H and high transparency of 92% in the visible wavelength range. On the other hand, the PMMA sheets made by using inorganic polysilazane exhibited a pencil hardness of as high as 8H, good adhesion to the substrate and water contact angle of $82^{\circ}$.

유기 및 무기 폴리실라잔을 우레탄 아크릴레이트와 혼합시킴에 따라 UV 경화형 하드 코팅 용액을 제조하였다. 이용액을 polymethylmethacrylate (PMMA) 시트에 흐름 코팅한 후 UV 경화시킴에 의해 UV 경화형 하드 코팅 도막을 제조하였다. 이 과정 중 폴리실라잔의 종류 및 첨가량을 변화시켜 코팅 도막의 물성에 미치는 영향을 살펴보았다. 그 결과 유기 폴리실라잔의 경우 $95^{\circ}$의 수접촉각을 보여 높은 소수성을 나타내었으며, 7H의 연필경도와 92%의 가시광선 투과율을 보였다. 반면에 무기 폴리실라잔을 코팅한 도막은 8H의 높은 연필경도와 기재와의 우수한 접착력 및 $82^{\circ}$의 수접촉각을 나타내었다.

Keywords

References

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