The Study Of Water-based Varnish And Printing Processes Matching

In this work, traditional polyacrylate emulsion was modified via semi-continuous emulsion polymerization of monomers such as methyl methacrylate, butyl acrylate, acrylic acid with the introduction of veova-10, diacetone acrylamide, hexamethylenediamine hydrazide, N- methylol acrylamide as modified monomers respectively. The results revealed that the addition of Veova-10 improved the water resistance, acid and alkali resistance and gloss of coating of the final coatings. The best performance was achieved with 10% addition of Veova-10. The crosslinked structures with improved water resistance,wear resistance and blocking resisitance can be obtained with DAAM and ADH. The best performance in this case was realized with 5.6% DAAM. The resin with N-MAM promoted the drying rate when cured at 120℃. Besides, the water resistance and blocking resistance were also enhanced with the optimized amount of 2%. The above three modified water-based polyacrylate emulsion suitable as high-performance water-based coating connection material.Furthermore, the influence of various modified resins and auxiliaries on the processing ability (drying property, blocking resistance,leveling,etc) and the use performance (gloss, abrasion resistance, water resistance,etc) were thoroughly investigated in order to meet the requirements of aqueous coatings for online polishing process (like lithographic printing, gravure, flexographic printing). Finally, water-based glazing oils with high-quality were synthesized for different printing inline coatings.