Benefits of Calcium Carbonate in the Paint industry
calcium carbonate (CaCO3) , commonly known as limestone or chalk, is a basic material in the paint industry. It plays an important role in various paint properties and provides many benefits.
Functions of calcium carbonate in paint:
- Filler: Calcium carbonate is used as a filler to reduce the cost of paint without compromising its quality.
- Property enhancer: Calcium carbonate improves coating properties such as viscosity, covering ability, and corrosion resistance.
- Bleach: Calcium carbonate is used as a bleach to increase the whiteness of paint.
Types of calcium carbonate used in paint:
- Ground Calcium Carbonate (GCC): This is the most common type and provides good value for money.
- Precipitated Calcium Carbonate (PCC): It has a smaller particle size and higher purity, which improves the coating properties.
- Granulated Calcium Carbonate: This has an even smaller particle size than PCC, giving better performance in some types of coatings.
Also Read Derivatives Of Calcium Carbonate
Effects of calcium carbonate on paint properties:
- Viscosity: Calcium carbonate increases the viscosity of the paint, which may affect the ease of application.
- Gloss: Calcium carbonate reduces the gloss of paint.
- Covering ability: Calcium carbonate increases the coating’s covering ability.
- Corrosion resistance: Calcium carbonate increases the paint’s resistance to corrosion.
Criteria for selecting calcium carbonate for paint:
- Particle size: The particle size of calcium carbonate should be compatible with the type of coating.
- Color: The color of calcium carbonate should be bright white.
- Purity: Calcium carbonate must be free of impurities.
Other uses of calcium carbonate in the paint industry
- Making putty: Calcium carbonate is used as a filler in making putty.
- Varnish making: Calcium carbonate is used as a filler in making varnish.
- Making Basics: Calcium carbonate is used as a filler in making basics.
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