Water-based nonionic wetting agents
Water-based nonionic wetting agents
Water-based nonionic wetting agents are widely used in water-based coatings and other water-based systems, and their application effects are mainly reflected in the following aspects:
1. Improve wetting performance
Water-based nonionic wetting agents can significantly reduce the static and dynamic surface tension of the system, thereby improving the wetting ability of the substrate. This improvement in wetting performance helps the coating to spread better on the surface of the substrate, reduce the interfacial tension between the coating and the substrate, and improve the adhesion and uniformity of the coating.
2. Promote flow and leveling
Water-based nonionic wetting agents can not only improve wetting performance, but also promote the flow and leveling of coatings. During the coating application process, wetting agents can improve the fluidity of the coating, make the coating easier to apply, and reduce surface defects such as brush marks and orange peels. At the same time, wetting agents can also promote the leveling of the coating, making the coating smoother and flatter.
3. Improve coating stability
Water-based nonionic wetting agents are very effective in improving emulsion stability and freeze-thaw stability of latex paint systems. In the preparation process of latex paint, wetting agents can accelerate the wetting process of pigments and fillers, improve dispersion efficiency, and fully demonstrate the performance of dispersants. In addition, wetting agents can enhance the anti-shrinkage performance of coatings and improve the overall stability of coatings.
4. Environmental protection and safety
With the improvement of environmental awareness, water-based non-ionic wetting agents also have significant advantages in environmental protection. Many water-based non-ionic wetting agents do not contain harmful substances such as silicone, oil and APEO, and meet environmental standards and regulatory requirements. At the same time, the use of wetting agents can also reduce VOC (volatile organic compounds) emissions and reduce pollution to the environment.
5. Specific application examples
Water-based coatings: Water-based non-ionic wetting agents are widely used in water-based interior and exterior wall coatings, water-based wood coatings and other water-based coatings to improve the wetting performance, fluidity and leveling of coatings.
Water-based inks: In water-based inks, wetting agents can improve the dispersibility and stability of inks and improve printing quality.
Water-based adhesives: Wetting agents help water-based adhesives to better wet the substrate, improve bonding strength and durability.
Water-based varnish and fountain solution: In water-based varnish and fountain solution, wetting agents can improve their fluidity and uniformity, and improve the gloss and clarity of printed products.
6. Precautions for use
Addition amount: The addition amount of water-based non-ionic wetting agents should be adjusted according to the specific use system and performance requirements. Generally speaking, the addition amount is between 0.1% and 1.0% of the total amount.
Addition method: Try to add the wetting agent after other surfactants and main resins are added, and stir well to achieve a good dispersion effect.
Compatibility: When selecting a wetting agent, ensure that it has good compatibility with other coating components to avoid adverse reactions or affect the performance of the coating.
In summary
Water-based non-ionic wetting agents have broad application prospects and significant advantages in water-based coatings and other water-based systems. By using wetting agents reasonably, the performance and quality of the coating can be significantly improved to meet the market demand for high-quality coatings.