6 декабря, 2015 
Pokraskin The rheological component is likewise dependent on the particle size and the resulting surface area, but also on the structure and the surface chemistry. Finely divided pigment blacks have a relatively high surface area and therefore a strong thickening effect. If the particle size increases, the surface area decreases and the thickening effect is reduced. This means:
Decreasing particle size: high viscosity Increasing particle size: low viscosity
Structure: The structure of the pigment black is an important parameter for the production of printing inks. A number of quality attributes depend on the structure: dispersion properties, viscosity, flow properties, color density, gloss, rub resistance, and conductivity:
High-structure: high yield value, high viscosity and reduction in gloss Low-structure: good flow properties, low viscosity and increased gloss
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