Application of water-based dispersants in inks
The application of water-based dispersants in inks is of great significance in many aspects, as follows:
1. Pigment dispersion and system stability
Water-based dispersants can disperse pigments into tiny particles, suspend them stably in water, and form a uniform pigment dispersion system. This process can effectively prevent the pigment from settling in the ink, maintain the stability of the pigment particles, avoid agglomeration and precipitation, and thus ensure that the ink maintains color consistency and stability during storage and use.
2. Viscosity adjustment and process adaptation
Dispersants optimize the fluidity and coating performance of water-based inks by adjusting the viscosity of the ink. Appropriate viscosity design can achieve uniform printing or coating effects without affecting the dispersion stability of the ink. For example, in a flexographic ink system, selecting a suitable dispersant can significantly improve the color concentration and system uniformity, while reducing the viscosity to meet the needs of high-speed printing.
3. Improved printing quality
The application of dispersants can significantly improve the printing performance of inks. By improving gloss, increasing leveling effects, and preventing floating colors, the ink forms a more uniform color film on the surface of the substrate. At the same time, its enhanced coloring property improves color saturation and color development, especially for the regulation of transparency (organic pigments) or hiding power (inorganic pigments).
4. Durability and environmental protection
Dispersants enhance the binding force between pigments and resins, improve the water resistance, wear resistance and weather resistance of inks, and extend the outdoor service life of printed products. In addition, as an environmentally friendly additive, water-based dispersants can replace traditional organic solvents and significantly reduce volatile organic compound (VOC) emissions, which meets the requirements of modern industry for sustainable development.
5. Cost optimization and production efficiency
Dispersants reduce production costs by increasing pigment loading, shortening grinding time, and reducing resin usage. For example, in carbon black dispersion systems, some dispersants can reduce the amount of resin added by 30% while maintaining stable ink performance. In addition, its viscosity reduction effect can reduce equipment energy consumption and improve overall production efficiency.
