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[Select UV Light Source] How to Choose UV Light Sources for UV Inks of Cationic Optical Curing Syste
2023-02-03
Tianhui
43
There are several types of UV inks: cationic optical curing UV ink, water -based UV ink, hybrid ink, etc. The UV ink of cationic optical curing system is currently the research field that people are concerned about. The light curing system UV ink does not produce unpleasant smell after curing, and once the cation is generated after being raised by UV light, the solidification reaction can continue to be continued after stopping the light. This is difficult to achieve the free radical light curing system. 2. Not suppressed by oxygen, which is conducive to the height of the ink surface, making the coating tough and shiny. And the free radical light curing system ink is severely suppressed by oxygen ink. 3. After the cationic optical curing system UV ink is cured, the volume shrinkage (generally 3% 5%), so it is conducive to improving the adhesion of the substrate. The volume shrinkage of the volume of the free radical light curing system is generally contracted by 10%, which has a greater impact on the adhesion of the substrate. Therefore, the UV ink or free radical/cationic optical optical curing system UV ink with cationic optical curing system UV ink can improve the speed of optical curing, especially for the solidification of the colored UV ink and the thicker network printing UV ink, more For benefits. From the market growth rate of cationic curing materials higher than the total growth rate of the UV curing market, it can be seen that the UV ink with a cationic optical optical curing system or a free radical/cationic composite optical system will be the new development direction of the UV ink. For the characteristics of cationic optical curing system UV ink, how should we choose a solid light source? Following the study shows that the exciting molecular lamp with a wavelength of 308nm is particularly effective for the curing of the uV ink of the cationic optical system UV ink. As far as the UVLED light source is concerned, it can be mixed with 310nm, 365nm, 385nm UVLED lamp beads in light sources.
Author: Tianhui-Air Disinfection
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