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Synthesis and Curing Behavior of UV-curable Polycarbonate-based Polyurethane Methacrylate : Effect of Polyol Molecular Weight, Contents of Photoinitiator and Monomers on the Flexibility and Properties

자외선 경화형 폴리카보네이트계 폴리우레탄 메타아크릴레이트의 합성과 경화거동 : 폴리올 분자량, 광개시제 및 모노머 함량이 유연성과 물성에 미치는 영향

  • Park, Eun-Suk (Lab. of Adhesion and Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Hwang, Hyeon-Deuk (Lab. of Adhesion and Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Park, Cho-Hee (Lab. of Adhesion and Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Lee, Yong-Hee (Lab. of Adhesion and Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Moon, Je-Ik (Lab. of Adhesion and Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Kim, Hyun-Joong (Lab. of Adhesion and Bio-Composites, Program in Environmental Materials Science, Research Institute for Agriculture and Life Sciences, Seoul National University)
  • 박은숙 (서울대학교 환경재료과학전공 바이오복합재료 및 접착과학 연구실, 농업생명과학연구원) ;
  • 황현득 (서울대학교 환경재료과학전공 바이오복합재료 및 접착과학 연구실, 농업생명과학연구원) ;
  • 박초희 (서울대학교 환경재료과학전공 바이오복합재료 및 접착과학 연구실, 농업생명과학연구원) ;
  • 이용희 (서울대학교 환경재료과학전공 바이오복합재료 및 접착과학 연구실, 농업생명과학연구원) ;
  • 문제익 (서울대학교 환경재료과학전공 바이오복합재료 및 접착과학 연구실, 농업생명과학연구원) ;
  • 김현중 (서울대학교 환경재료과학전공 바이오복합재료 및 접착과학 연구실, 농업생명과학연구원)
  • Received : 2011.02.17
  • Accepted : 2011.06.01
  • Published : 2011.06.30

Abstract

UV-curable coatings have been used in various industries due to their advantages such as high mechanical property, good solvent resistance, fast curing process and low volatile organic compounds. However, a lack of flexibility of UV-cured films is a weak point for the pre-coated system of roll-to-roll process. In this study, UV-curable polycarbonate-based methacrylates were synthesized with polycarbonate diol, isophorone diisocyanate and 2-hydroxyethylmethacrylate to improve flexibility of the UC-cured films. The effects of polyol molecular weight, content of photoinitiator and monomers on the UV-curing behavior, flexibility and properties were investigated. The UV-curing behavior was measured by a photo-DSC, the pendulum hardness, tensile strength, viscoelastic properties were also evaluated.

자외선 경화형 도료는 기계적 물성과 내화학성, 내마모성 등이 우수하고, 빠른 경화시간으로 경제성이 우수하며, 휘발성유기용제의 양을 줄일 수 있어 환경친화적이기 때문에 다양한 산업분야에서 널리 사용되고 있다. 이에 반해, 유연성이 떨어지는 도막을 형성하기 때문에 최근 활발히 연구되고 있는 선도장 후성형의 pre-coated metal용 도료로 사용하는 데 문제점을 지니고 있다. 본 연구에서는 polycarbonate diol, isophorone diisocyanate와 2-hydroxyethyl methacrylate를 이용해 polyurethane methacrylate를 합성하여 성형 시 필요한 유연성을 향상시켜 선도장 강판용 도료의 적용 가능성을 살펴보았다. 또한, 폴리올의 분자량, 광개시제의 함량, 모노머의 함량이 경화거동, 유연성, 도막물성에 미치는 영향을 평가하였다. Photo-DSC를 이용하여 광경화 거동을 살펴보았고, 진자경도, 인장강도, 점탄성을 측정하여 경화도막의 유연성 및 도막물성을 평가하였다.

Keywords

References

  1. P. Uhlmann, R. Frenzel, B. Voit, U. Mock, B. Szyszka, B. Schmidt, D. Ondratschek, J. Gochermann, and K. Roths, Prog Org Coat, 58, 122, (2007). https://doi.org/10.1016/j.porgcoat.2006.08.020
  2. T. Brock, M. Groteklaes, and P. Mischke, European Coatings Handbook, Editor, Vincentz, Hannover (2000).
  3. P. Glockner, T. Jung, S. Struck, and K. Studer, Radiation Curing ‐ Coatings and Printing Inks, Editor, Vincentz Network, Hannover (2008).
  4. R. Schwalm, UV Coatings : Basics, Recent Developments and New Applications, Editor, Elsevier, Amsterdam; London (2007).
  5. 황현득, 이용희, 김현중, 노승만, 남준현, 박종명, 김종훈, 공업화학전망, 13, 36 (2010).
  6. K. Ueda, H. Kanai, and T. Amari, Prog Org Coat, 45, 15 (2002). https://doi.org/10.1016/S0300-9440(02)00068-1
  7. K. Ueda, H. Kanai, and T. Amari, Prog Org Coat, 45, 267 (2002). https://doi.org/10.1016/S0300-9440(01)00255-7
  8. D. Santos, H. Raminhos, M. R. Costa, T. Diamantino, and F. Goodwin, Prog Org Coat, 62, 265 (2008). https://doi.org/10.1016/j.porgcoat.2008.01.003
  9. A. L. Yahkind, D. A. Paquet Jr, D. V. Parekh, C. L. Stine, and L. G. J. van der Ven, Prog Org Coat, 68, 28 (2010). https://doi.org/10.1016/j.porgcoat.2009.09.022
  10. P. Glockner, T. Jung, S. Struck, and K. Studer, Radiation Curing coatings and Printing Inks, Editor, 1, 60, Vincentz, Hannover (2008).
  11. R. Schwalm, L. Haubling, W. Reich, E. Beck, P. Enenkel, and K. Menzel, Prog Org Coat, 32, 191, (1997). https://doi.org/10.1016/S0300-9440(97)00060-X
  12. F. Wang, J. Q. Hu, and W. P. Tu, Prog Org Coat, 62, 245 (2008). https://doi.org/10.1016/j.porgcoat.2007.12.005
  13. S. A. Madbouly and J. U. Otaigbe, Prog Polym Sci, 34, 1283 (2009). https://doi.org/10.1016/j.progpolymsci.2009.08.002
  14. T. Masubuchi, M. Sakai, K. Kojio, M. Furukawa, and T. Aoyagi, e-journal of Soft Materials, 3, 55 (2007). https://doi.org/10.2324/ejsm.3.55
  15. A. Palanisamy, Prog Org Coat, 60, 161 (2007). https://doi.org/10.1016/j.porgcoat.2007.06.002
  16. J. H. Choi and H. J. Kim, Journal of Industrial and Engineering Chemistry, 12, 412 (2006).
  17. 임동혁, 김수민, 도현성, 박영준, 주효숙, 김현중, Trends in Agriculture & Life Sciences, 3, 28 (2005).
  18. B. H. Stuart, Polymer Analysis, D. J. Ando, 1, 134, Jone Wiley & Sons, Darford (2002).
  19. J. Xu, W. Pang, and W. Shi, Thin Solid Films, 514, 69 (2006). https://doi.org/10.1016/j.tsf.2006.02.032
  20. B. K. Kim, B. U. Ahn, M. H. Lee, and S. K. Lee, Prog Org Coat, 55, 194 (2006). https://doi.org/10.1016/j.porgcoat.2005.09.015
  21. C. Bai, X. Zhang, J. Dai, and W. Li, Prog Org Coat, 55, 291 (2006). https://doi.org/10.1016/j.porgcoat.2005.12.002