There are many products about lithopone. Everyone knows that lithopone is also known as zinc white, which is a non-toxic white powder series. It is insoluble in water and decomposes with acid. Its heat resistance is very high. Good, it can also improve the weather resistance, anti-algae, and shielding power of the product.
The main purpose:
Lithopone is a white powder pigment with a zinc sulfide content of 30%. It is stronger than B301's hiding power and achromatic power, and has good dispersibility. It is mainly used in coatings, paints, rubber, inks, plastics and other industries.
Weather resistance and color retention of lithopone:
The coating film of the coating is composed of a base polymer and a pigment. In the formulation, the volume concentration of the lithopone is lower than that of the critical PVC, the lithopone particles are dispersed in the continuous phase of the base polymer, and the lithopone particles are loosely packed. There is a gap, scrub resistance and pollution resistance drop sharply. Therefore, when configuring high-performance paint, it is necessary to strictly control PVC as small as possible to ensure that the coating film is intact.
The main function is to make the coating film have a certain hiding power, and also exhibit different colors. The coating film has excellent weather resistance. Lide powder needs to have good hiding power and coloring power, high dispersion, and vivid color. And stability to light, etc.
Weather resistance is one of the properties of excellent lithopone. At the same time, its color is not the same, it can absorb a lot of ultraviolet rays, and it can reduce the other colors of ultraviolet light on the base material, that is, improve the weather resistance and color retention of the coating film. The most effective and best titanium dioxide.
In summary, in high-performance coatings, it is important to prevent the use of fillers that are easy to be pulverized, and to use fillers with good weatherability and acid-base stability. The precipitated barium sulfate, quartz powder, and mica powder are better. And wollastonite powder, etc.
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