Water-based ink pigment carbon black, carbon black after oxidation

Application description of pigment carbon black for water-based inks: water-based inks have been widely used at home and abroad. Stable, strong water-resistant glue, non-corrosive plate material, adjustable drying speed, can be used for four-color overprinting and spot color printing, etc.

The performance of pigment carbon black for water-based ink is the key to the quality of water-based ink. If the properties of carbon black such as blackness, fineness, tinting strength, etc. are poor, no matter how good the dispersant is, it will not be able to produce good water-based ink. The particle size of carbon black for ink is relatively small, the surface free energy is high, and there is a strong tendency of self-aggregation, so it is difficult to disperse stably in a solvent. Molecular polymers will significantly improve the dispersion stability of pigment carbon black in solvents. Select the appropriate pigment carbon black, and then mix it with the appropriate dispersant and resin system reasonably, and grind it to get high-quality water-based ink.

Does the special pigment carbon black for water-based ink go through oxidation?

After post-oxidation treatment, the more oxygen-containing groups on the surface, the lower the pH value will be, but the hygroscopicity of carbon black will be greatly increased. Although the water resistance and drying properties of the ink will be deteriorated, it is very beneficial to pigments. Dispersion of carbon black in water-based inks. If the amount added is the same, the pigment carbon black with finer particles will increase the viscosity of the ink, and conversely, if it is a product with thicker particles, the ink will not flow, so you want to get the best addition during production If the amount is large, more energy is needed to fully disperse it until it is satisfied.