Calcium carbonate is a kind of odorless white powder, which is widely used as an inorganic filler. As a white color paste, calcium carbonate is of high quality and low price. It has rich resources and high taste, and is widely used in building coatings, plastics, rubber and other industries. Calcium carbonate is used as electrostatic powder, which has the characteristics of high powder rate, large total paint area, no sand, no heavy metal exceeding the standard, etc.

1. The type of calcium carbonate is different according to the production method of calcium carbonate, which can be divided into Heavy calcium carbonate 、 Light calcium carbonate Colloidal solution calcium carbonate and crystalline calcium carbonate. The development trend of calcium carbonate can be divided into two crystal calcium carbonate and atomic crystal calcium carbonate according to the different ordering methods of the macro structure of calcium carbonate, namely, the ordering of molecules and positive ions and whether there is regularity. Snow white sand

2. Characteristics of light calcium carbonate Calcium carbonate is non irritating, odorless, white, dry, carboxyl free, soft powder, and its strength is Mocha No. 3. Light calcium carbonate is a chemical production of calcium carbonate, with an average particle size of 0-6um and a glossiness of more than 95%, which is usually used as an electrostatic powder of calcium carbonate.

Heavy calcium carbonate is made of natural dolomite, limestone and other raw materials by mechanical equipment. Because of the variety of equipment, its application in electrostatic powder is limited.

3. Effect of calcium carbonate in electrostatic powder

A. It plays a framing role in the electrostatic powder. Their addition can improve the thickness of the coating, corrosion resistance and durability of its coating.

B. It can reduce the cost of spraying. Generally, the price of calcium carbonate is lower than that of other inorganic fillers, and the addition of calcium carbonate in architectural coatings is also very large. Therefore, adding calcium carbonate can reduce the cost of coatings.

C. It can improve the powder speed of electrostatic powder and the total painting area