The role of dispersant is to use wetting dispersant to reduce the time and energy needed to complete the dispersion process, stabilize the dispersed pigment dispersion, modify the surface properties of pigment particles, adjust the movement of pigment particles. It is embodied in the following aspects:

1, improve the luster, increase the leveling effect luster actually the most important depends on the surface of the paint scattering of light (that is, a certain flatness can be. Of course, it is necessary to determine whether the detection instrument is smooth enough, not only considering the number of primary particles, shape, and consider their combination), when the particle size is less than 1/2 of the incident light (this value is uncertain), the performance is refracted light, luster will not be improved, the same way that the covering power depends on scattering to provide the main covering power will not increase (in addition to carbon black mainly by absorbing light, Organic paint forgot). Note: The incident light refers to the range leveling of visible light. But note that the original number of particles reduced, is to reduce its structural viscosity, but the increase of the surface will reduce the number of free resin, whether there is a balance point is not good, but the general powder coating leveling is not the finer the better.

2, prevent floating color hair flower.

3, improve coloring power Note that coloring power in automatic color matching system is not the higher the better.

4, reduce viscosity, increase the amount of pigment loading.

5, reduce flocculation is such, but the finer the surface energy is higher, the higher the adsorption strength of the dispersant is needed, but the adsorption strength of the dispersant is too high may cause adverse to the film performance.

6, increase the storage stability of the reason is similar to the above, once the dispersant stability strength is not enough, but the storage stability is worse (of course, from your picture is no problem).

7, increase color display, increase color saturation, increase transparency (organic pigments) or cover power (inorganic pigments).