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http://dx.doi.org/10.17702/jai.2011.12.2.047

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  

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)
Publication Information
Journal of Adhesion and Interface / v.12, no.2, 2011 , pp. 47-55 More about this Journal
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.
Keywords
polycarbonate diol; polyurethane acrylate; pre-coated metal; automotive coatings; UV-curing;
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