What are the main components of calcium carbonate powder?

Calcium carbonate is an inorganic compound, which is the main component of limestone and calcite. It is white crystal or surface, tasteless, no response when exposed to the air, and insoluble in alcohol. What are the main components of calcium carbonate powder?

What are the main components of calcium carbonate powder?

According to different production methods of calcium carbonate, calcium carbonate can be divided into heavy calcium carbonate, light calcium carbonate, colloidal calcium carbonate and crystalline calcium carbonate. The content of calcium carbonate powder is more than 98%, which is neutral, with a PH value of 7-10, high whiteness, light specific gravity, and large water absorption, which is one time of gray calcium and 3-4 times of heavy calcium. The suspension is good. It feels good with your hands. However, the amount of glue used is large, so ordinary cold soluble glue powder and cellulose are not suitable for use (polyvinyl alcohol hot-melt adhesive is not included). The hardness and water resistance of polyvinyl alcohol are poor, so polyvinyl alcohol is suitable for use.

What are the characteristics of calcium carbonate powder?

Low water absorption, high whiteness, low dosage and strong cohesiveness. Low price calcium lime powder is an environment-friendly coating with the function of drawing on indoor carbonate gas (calcium lime powder includes calcium oxycarbonate and calcium oxycarbonate, which can continuously draw on the carbonate gas in indoor air and convert it into calcium carbonate. This requires a particularly long process, and these functions have been recognized by many people layer by layer until now.

What is the use of calcium carbonate powder in paint putty powder?

In coatings, calcium carbonate powder can be used as a white pigment, playing a fan-shaped role, and calcium carbonate can be used as a healthy pigment in the coating industry. As the color of calcium carbonate powder is white, compared with the latex in the paint, the solvent is cheap, the particles are small, and can be evenly distributed in the paint. It is a widely used healthy pigment. Due to the increasing awareness of environmental protection, waterborne coatings have been widely used in buildings. As calcium carbonate powder is white, hydrophilic and cheap, it has been widely used. The filling of calcium carbonate powder can enhance the deposition and permeability of the base course surface primer.

The clay in the paint is used to fill the base surface, that is, the half waist layer of the group paint. Any clay needs to be filled with a large amount of filler. The main body of the filler in the clay is heavy calcium carbonate, and a small amount of lithopone is added to increase the viscosity to avoid loose paint layer. At the same time, properly participate in the precipitation of calcium carbonate for dry polishing.

In thick paint, calcium carbonate powder can thicken the paint sheet and play the role of supplement and leveling. Therefore, heavy calcium carbonate and light calcium carbonate are generally added to thick paint, and the amount of heavy calcium carbonate powder can reach 24.6% - 78.5%.

In the top coat, namely the top coat, semi gloss and matt paint shall be considered appropriate, and the method of increasing healthy pigments and reducing gloss shall be adopted. Calcium carbonate powder is an ideal matting filler.

Calcium carbonate powder can play its role as an additive in colorful coatings, so as to reduce the cost of materials and increase the decorative effect. Light calcium carbonate, namely precipitated calcium carbonate, can be used for color paint chips. The oil absorption is about 80%, the particle size is about 15 microns, the specific gravity is about 2.7, and the refractive index is about 1.60. It can also be ground with heavy calcium carbonate (calcite powder), which is naturally produced marble.