Carbon black dispersion has always been a problem when using carbon black,
but many manufacturers have not solved it well, leading to the phenomenon of
thickening. This is mainly due to poor dispersion of carbon black, and
dispersants for carbon black were therefore developed. However, carbon black
dispersants are not only used to prevent thickening.
Functions of carbon black dispersants:
Enhancing gloss and leveling effects
Preventing floating color and blooming
Improving the ability to disperse carbon black, which is also a common function of carbon black dispersants
Reducing viscosity and increasing pigment loading
Reducing agglomeration
Increasing storage stability
Improving color development and increasing color saturation
Increasing transparency (for organic pigments) or opacity (for inorganic pigments)
Through the above content, it can be seen that carbon black dispersants have significant effects. Some carbon black manufacturers even mix carbon black with dispersants to improve the dispersion of carbon black before selling it. However, it should be noted that there are many types of carbon black dispersants, and the effects of different dispersants on carbon black are not the same. Therefore, it is important to choose carefully."