Science popularization of coatings: the relationship between the coloring power and dispersion of pigments

Coloring power is the ability of one pigment to mix with another to form a strong or weak color For example, when chrome yellow is mixed with Chinese blue, various green pigments are produced, and chrome green of the same color tone is produced The amount of Chinese blue depends on its coloring power Strong coloring power, less consumption In the same white paint, it is often used to reduce their yellow color The larger the colouring power, the smaller the dosage The coloring power of pigments depends not only on their properties, but also on the production process Many researchers believe that the greater the dispersion of pigment, the greater its coloring power Some people have studied the relationship between the coloring power and dispersion of Ultramarine as shown in the table below [upload = JPG] / powder / UploadFile / 2009-7 / 200972116495266507 JPG [/ upload] the relationship between the coloring power and dispersion of ultramarine pigment can be concluded from the above table In some parts of the particle size distribution, the smaller the particle size is, the larger the coloring power is When the dispersion is large, the coloring power rises slowly, but does not stop rising or may decline like the covering power.