1. Join directly at the time of production
1. Add clean water to a large bucket equipped with a high-shear blender.
2. Start stirring continuously at low speed and slowly sieve the hydroxyethyl cellulose into the solution evenly.
3. Continue stirring until all particles are soaked through.
4. Then add antifungal agents, alkaline additives such as pigments, dispersing aids, ammonia water.
5. Stir until all the hydroxyethyl cellulose is completely dissolved (the viscosity of the solution increases significantly) before adding other components in the formula, and grind until the finished product.
2. Equipped with mother liquor for waiting
This method is to first prepare a mother liquor with a higher concentration, and then add it to the latex paint. The advantage of this method is that it has greater flexibility and can be directly added to the finished paint, but it should be properly stored. The steps are similar to steps 1-4 in method 1, except that high stirring is not required to completely dissolve into a viscous solution.
3.Prepared into porridge for use
Since organic solvents are poor solvents for hydroxyethyl cellulose, these organic solvents can be used to prepare porridge-like products. The most commonly used organic solvents are organic liquids in paint formulations such as ethylene glycol, propylene glycol and film formers (eg ethylene glycol or diethylene glycol butyl acetate). Ice water is also a poor solvent, so ice water is often used together with organic liquids to prepare porridge-like products. The porridge-like product, hydroxyethyl cellulose, can be directly added to the paint, and the hydroxyethyl cellulose has been foamed and swelled by the porridge. When added to the paint, it dissolves immediately and thickens. After adding, it is still necessary to keep stirring until the hydroxyethyl cellulose is completely dissolved and uniform. Generally, the porridge-like product is mixed with six parts of organic solvent or ice water and one part of hydroxyethyl cellulose. After about 6-30 minutes, the hydroxyethyl cellulose will be hydrolyzed and swelled obviously. In summer, the water temperature is generally too high, and it is not suitable to use products similar to porridge.
Post time: Oct-19-2022