water -based inks

In recent years, the pollution problem of volatile organic solvents in coatings, adhesives, and inks has attracted increasing attention.

In the printing industry, the development of water -based inks has become the consensus of the industry.

When preparing water -based inks, in order to balance the use performance of the hardness and adhesion of the ink and the minimum film temperature and other printing adaptability, people often comply and cold, or use two types Lotion with a nuclear shell structure.

1. Design synthesis of acrylic hard lotion (TG is higher than room temperature) and the cross -linked acrylic emulsion (Tg is lower than room temperature) with low glass transformed temperature with high glass transition temperature (TG is lower than room temperature). The effects of polymerization and other effects on the stability of soft lotion; mix the above two emulsions in a certain proportion to prepare a series to form a different soft and hard gums. Use the lowest film temperature meter, differential scanning heat meter (DSC), dynamic mechanical analyzer (DMA), material test machine, dynamic light scattering meter (DLS), stability analyzer, atomic power microscope (AFM) and other instruments testing The performance of pure orders and mixed emulsions. The system has studied different soft and hardcups with calcium ion stability and ethanol stability of the co -mixed emulsion. The influence of micro -appearance.

Preparation of acrylic emulsion with semi -continuous seed emulsion and pre -emulsification method to prepare room temperature self -cross -cross -cross -cross -linked nuclear shell structure, and the effects of various emulsification systems and dosage have on emulsion performance. The emulsification system formula has studied the effects of lotion, type and dosage, pH regulator types, cross -linking monomer dosage, etc., especially the effects of emulsion stability performance. The optimized formula and process are prepared to obtain excellent comprehensive performance on PE, PP, PET, and PA membranes, and acrylic emulsion resin connectors that have significantly improved ethanol dilution stability.

Taking the optimized acrylic lotion prepared as the connection, prepare water -based ink, and compare with similar inks prepared by a foreign DSM emulsion, examine the compound solubility of two water -based inks on PE, PP, PET, PA membrane, attached, attached Power, rubbing resistance, scratch resistance, wet friction, water -resistant, hydrogen peroxide and other performance differences.

The results showed that the comprehensive performance of the ink prepared by homemade emulsion was excellent, and it had better compound solubility and adhesion.