Yuan Lei told you | Do you know the difference between pigments and fillers?

Release time:

2024-01-29 09:38


Yuan Lei Powder tells you | Do you know the difference between pigments and fillers?


As we all know, in many cases, floor coatings need to be dyed, but the coloring of floor coatings is simpler than that of ordinary architectural decorative coatings, and the varieties used are relatively small. In the performance of epoxy resin, epoxy floor coatings for the selection of colored pigments have any special requirements, but from the needs of the actual performance of floor coatings, it is best to choose good chemical resistance and alkali resistance of inorganic pigments or water-based color paste.



The filler is a low refractive index white and colorless pigment, also known as an extender pigment. Most of these materials are natural products and industrial by-products, so the price is much cheaper than colored pigments. The refractive index of fillers is generally in 1.45-1.7. Some fillers such as light calcium carbonate, white carbon black and other density is small, the suspension force is better, in the paint can prevent the high density pigment precipitation; some fillers can improve the logistics performance and chemical properties of the coating; some fillers can improve the water resistance, durability and wear resistance of the coating.



The correct choice of fillers in the production of coatings can not only reduce production costs, but also improve product quality.


Fillers are generally classified according to mineral composition, which are divided into alkaline earth metal salts, silicates and light metal salts such as aluminum and magnesium.


Alkaline earth metal salts:Heavy calcium carbonate, light calcium carbonate, precipitated barium sulfate, etc.


Silicates:Silica, talc, kaolin, wollastonite powder, mica powder, bentonite, diatomite, etc.


Light metal salts such as aluminum and magnesiumThere are dolomite powder, magnesium carbonate, magnesium oxide, aluminum hydroxide, etc.







Tell, filler, pigment, salt, paint, floor, can, coloring, performance, calcium carbonate

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Fillers in coatings are usually white or slightly colored pigments with a refractive index less than 1.7. It has the basic physical and chemical properties of pigments used in coatings, but due to its refractive index being similar to the film-forming material, it is transparent in coatings and does not have the coloring and covering power of coloring pigments. It is an indispensable pigment in coatings.

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In architectural coatings, commonly used mineral materials include barium sulfate, calcium carbonate, kaolin, mica powder, talc powder, quartz powder, silica micro powder, transparent powder, glass powder, wollastonite powder, etc. Reasonable application of various mineral materials can effectively improve or enhance the performance of coatings. Let's take a look at the application of different mineral materials in coatings.