Study on the Dispersity of Black Water-based Covering Ink

Dispersity is one of the most important factors that affect the covering property of ink. In order to obtain the black water-based ink with high covering property, study the dispersity of ink, by changing the variety of both pigments and resins, the ratio of pigment to resin, the variety and the content of dispersants to prepare based ink, by testing the diameter size to explore the factors that affect the dispersion of black water-based covering ink. It has been proved that the interaction between different pigments and resins is the key factor that influences the dispersion property of the black water-based covering ink. The dispersity property of the resin to pigment depends on a great extent on the ratio of pigment to resin. The result also proved that different kind of dispersants and content are also important factors that influence the dispersion property.