| 초록 |
Surface properties and curing behavior of UV-initiated photopolymerization with and without wax have been investigated by pendulum hardness, pencil hardness, gloss, photo-differential scanning calorimetry (photo-DSC), and FTIR-ATR. In addition, the influence of wax type (paraffin wax, amine modified PE wax) on the various properties of UV cured films was studied. The results showed that the wax type and the concentration of wax were the significant factor affecting gloss and curing of UV cured films. Specially, the photo-DSC results showed that the polymerization reactivity and the ultimate percentage conversion for the UV cured films containing paraffin wax were higher than the corresponding values for the formulation without wax and with amine modified PE. The observed results clearly demonstrate that the photopolymerization of UV curing with paraffin wax in an air atmosphere is less inhibited by the oxygen compared to UV curing without wax and with amine modified PE wax. |
