Application requirements for dispersants in white pulp

The main component of the white paste used in white coatings and inks is titanium dioxide. Titanium dioxide is the strongest coloring agent among white pigments, with excellent coverage and color fastness. It turns yellow when heated and white again when cooled.

In our paint production process, pigment dispersion is a very important production link, which directly affects the storage, application, appearance, and performance of the paint film. Therefore, selecting dispersants reasonably is a very important link.

If the white slurry is not well dispersed, it may result in particle coarsening, insufficient grinding fineness, fogging, blooming, coagulation, and floating color during spraying after painting.

If the dispersion speed is not enough, increase the speed; Insufficient wetting and insufficient dispersant dosage may be due to the dispersant dosage exceeding the lower limit of the empirical formula. The dosage can be increased, but cost considerations must also be taken into account. The manufacturer recommends a dispersant dosage of 5% -10% of the inorganic pigment, but engineers usually design formulas based on the minimum dosage. There are so many manufacturers of dispersants on the market, so you can choose dispersants with low dosage that achieve the purpose of dispersion. After comprehensive consideration, choose a dispersant that can disperse the fineness to the desired fineness, and then conduct performance testing.

In summary, whether a dispersant is suitable for dispersing titanium dioxide depends on compatibility, dispersion fineness, cost, paint performance, and the material on which the paint film is coated.