Indicator name: Pigment wettability

Other names: Wetting of a pigment surface, powder wettability, surface wettability, surface wetting

So What is pigment wettability?

Pigment wettability (Powder wettability) is the ability and stability of a pigment to spread in a liquid medium (e.g. oil, solvent, etc.). Or you can understand it as wetting of a pigment surface. In simpler terms, it describes the ability of the pigment particles to interact with the liquid medium. The wettability index also reflects the phenomenon of whether the pigment particles can be sufficiently wetted and dispersed by the liquid medium.

Pic# Common indicators of iSuoChem Pigment Technical data sheet(TDS): Pigment wettability

Pigment wettability has an important influence on pigment dispersion, coloring effect and coating performance. If the wettability of the pigment is good, then the pigment particles can be better dispersed in the liquid medium to form a uniform pigment dispersion. This not only improves the coloring and covering power of the pigment, but also improves the flow and adhesion of the coating, thus improving the overall performance of the coating.

We are often asked by new customers in the coating industry how to improve the wettability of pigments. We generally suggest that: the wettability of pigment can be improved by adjusting the surface treatment of pigment particles, choosing suitable liquid medium and optimizing the dispersion process, so as to improve the quality and performance of coatings.