Water-based ink dispersant: Green revolution in the printing industry
In the printing industry, the performance of ink directly affects the quality and effect of printed products.
With the improvement of environmental awareness and the continuous
advancement of technology, water-based ink has gradually replaced traditional solvent-based inks due to its
advantages such as environmental protection, non-toxicity and easy handling.
As an important component of water-based inks, water-based ink dispersants play an increasingly important
role in the printing industry with their unique advantages.
1. Basic concept of water-based ink dispersants
Water-based ink dispersants are environmentally friendly non-ionic dispersants, which are mainly used to promote
the uniform dispersion of solid particles such as pigments and fillers
in aqueous media. Its molecular structure usually includes two parts: anchoring groups and solvation chains.
The anchoring groups can be tightly adsorbed on the surface of ink pigments
to prevent dispersant desorption; while the solvation chains can form a protective layer of a certain thickness on
the surface of ink pigments to improve the dispersion stability and fluidity
of inks.
2. Advantages of water-based ink dispersants
Excellent dispersion performance
Water-based ink dispersants can significantly reduce the viscosity of inks, making them easier to disperse and mix.
By destroying the agglomerates in the ink, the pigments and fillers are
more evenly distributed in the ink, thereby improving the coloring power and hiding power of the ink. At the same time,
the dispersant can form a protective layer on the surface of the
ink pigment to prevent the close agglomeration between the pigment particles, avoid the precipitation and stratification
of the ink during storage and use, and maintain the consistency
and stability of the ink.
Improve ink stability
The water-based ink dispersant has good stability, which can prevent the re-aggregation and precipitation of pigments and
fillers, and ensure the long-term stability of the ink. This is of
great significance for the long-term preservation and quality assurance of printed products.
Improve printing effect
The addition of dispersants can improve the fluidity and wettability of the ink, making the ink easier to print on the substrate.
At the same time, it can also improve the drying speed and
adhesion of the ink, making the printed products more vivid, clear and durable. This is crucial to improving the quality of printed
products and meeting the diverse needs of customers.
Environmental protection
Water-based ink dispersants are usually made of environmentally friendly non-ionic polymers, which are environmentally friendly
and will not cause pollution. This meets the requirements
of the modern printing industry for environmental protection and sustainable development, and is conducive to the realization of
green production and circular economy.
Wide applicability
Water-based ink dispersants are suitable for many types of inks, such as water-based flexographic inks, water-based gravure inks,
water-based screen printing inks, etc. At the same time,
it is also suitable for different pigments and fillers to meet various printing needs. This makes water-based ink dispersants have a
wide range of application prospects in the printing industry.
Easy to adjust
The amount of dispersant added can be adjusted according to the specific formula of the ink and the desired effect. By adjusting
the amount of dispersant, the dispersibility and stability
of the ink can be optimized to meet different printing requirements. This makes water-based ink dispersants more flexible and
controllable in the printing process.
Improve production efficiency
The use of water-based ink dispersants can shorten the grinding time and dispersion time of the ink and improve production efficiency.
At the same time, it can also reduce the failure rate
of the ink during the printing process, and improve the qualified rate and production efficiency of the printed products. This is of great
significance for printing companies to reduce costs
and improve competitiveness.
3. Conclusion
Water-based ink dispersants play an increasingly important role in the printing industry with their excellent dispersibility, improved ink
stability, improved printing effect, environmental
protection, wide applicability, easy adjustment and improved production efficiency. With the improvement of environmental awareness
and the continuous advancement of technology,
the application prospects of water-based ink dispersants will be broader. In the future, we will look forward to the emergence of more
innovative water-based ink dispersant products to
bring more convenience and benefits to the printing industry.
