Resolve all kinds of white pigment in paint

In the paint industry, the most important white pigment is titanium dioxide (TiO2). As a high refractive index titanium dioxide (rutile titanium dioxide n = 2.80, anatase titanium dioxide n = 2.55), light scattering ability is stronger than any other white pigment in colored paint with excellent hiding power, especially rutile dioxide. Compared with other coloring pigments, titanium dioxide white pigment in the pigment in the performance of all the best brightness. Due to these excellent optical properties, non-toxic and chemically inert, can replace all other titanium dioxide white pigment.PVC plasticizer
Size and size distribution; many are transparent TiO2 crystals appear, but the industry has TiO2 pigment ultrafine particles having a high opacity (hiding power). When the particle diameter is about 0.25μm, the titanium dioxide pigment maximum hiding power; TiO2 particle diameter larger than or smaller than 0.25μm, the hiding power will be reduced. The particle size of 0.25μm wavelength of 400nm light is ideal. Near the maximum value in hiding, changes in particle size as the pigment, the pigment color will change. Smaller particle size TiO2 appear blue, the larger particle size TiO2 appear yellow.PVC impact modifier
TiO2 particle size distribution of the presence of the coating influence the performance, a narrow particle size distribution of titanium dioxide per unit volume of the product color intensity hiding or wide particle size distribution than products better.
Surface treatment; surface treatment of titanium dioxide pigment in an amount of usually 0 to 20%, mainly inorganic surface treatment agent, such as Al2O3, SiO2, ZrO2 or mixtures thereof. In addition, some of the organic surface treatment agent may also be used to improve the titanium dioxide in the dispersion of different media, such as polyhydric alcohols, amines and silane coupling agent, the pigment production process can be used as grinding aids. The surface treatment agent added amount of the pigment type and properties of great increase in the amount with the treating agent, pigment particle size, oil absorption and surface area will increase;