1. Improve the gloss and increase the leveling effect. Experiments have shown that the gloss of the paint film will be significantly different if the same formula is used and different dispersants are used. For example, in a black coil coating system, the 20 ° gloss of coating films made by three different dispersants are 69.7%, 81.5%, and 77.1%, respectively. If the dispersant used is not appropriate, the color will become coarse after flocculation, and its effect on gloss is similar to matting powder, which will naturally affect gloss.

2. Preventing floating color blooming Preventing floating color blooming is one of the well-known dispersants. To prevent floating color blooming, a suitable dispersant should be selected, whether it is floating color blooming in the tank or floating color blooming of the paint film, which can be improved or eliminated. Some dispersants are controlled flocculant dispersants. The molecular chain contains some carboxyl groups, and when they are compatible with the pigment, they will also form hydrogen bonds with each other, thereby stabilizing the pigment particles and preventing floating and blooming. effect.

3. Improve the tinting strength. Pigment dispersion and stability are better, and its tinting strength will be significantly enhanced.

4. Reduce the viscosity and increase the pigment loading. Using a suitable dispersant, the viscosity of the obtained color paste will be significantly reduced. This can increase the loading of pigments and improve production efficiency.

5. Reduce flocculation, increase workability and usability. Many people do finger research tests when evaluating dispersants. If the dispersant is improperly matched, there will be a significant color difference between the finger-grinded area and the finger-grinded area, and the pigmentation power of the pigment after flocculation will be reduced, which will cause difficulties in color matching and coating construction. Using the flow plate test, flocculation of color paste can also be observed.

6. Prevent coarsening and increase storage stability. If an inappropriate dispersant is selected, the color paste will be roughened or the color will change due to flocculation, which is not what everyone wants. In addition to resin systems, dispersants are important factors affecting the storage stability of coatings. Poorly dispersing color pastes will undergo coarsening, sedimentation, and reduced tinting power.