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Preparation and Properties of UV Curable Hard Coating Materials on PET  

Kim, Hyunjoon (Department of Chemical Engineering, Kyonggi University)
Publication Information
Journal of the Semiconductor & Display Technology / v.13, no.1, 2014 , pp. 35-41 More about this Journal
Abstract
UV curable transparent hard coating materials have been developed to improve the mechanical and optical properties of PET substrate. The coating materials were synthesized using various urethane acrylate oligomers, monomers, photo initiators, and leveling agents. The materials were coated on PET substrates and UV cured. The hard coated PET films were shown to have the good scratch resistance and transparency. When the urethane acrylate oligomer with more functional groups was introduced into the coating solution, the mechanical and optical properties were improved. However the higher concentration of 9-functional oligomer resulted in the decrease of workability. The addition of trimethylolpropane ethoxylate$(EO/OH)_9$ triacrylate(TMPETA) to coating solution improved the workability and properties. As a result, the UV cured film from the formulation of urethane acrylate oligomer with 9-functional groups, TMPETA as a monomer, IRACURE 754 as a photo initiator and BYK-340 as a leveling agent showed the best mechanical and optical properties in this study.
Keywords
PET; UV curable; hard coating; urethane acrylate oligomer;
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Times Cited By KSCI : 1  (Citation Analysis)
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