The application advantages of magnesium carbonate in coatings are mainly reflected in the following aspects:
Thickener and filler: As a thickener in coatings, magnesium carbonate can effectively adjust the rheological properties of coatings and ensure that the coatings have good fluidity and coverage during construction. At the same time, it can also improve the filling of coatings, reduce shrinkage and cracking risks, thereby improving the mechanical strength and durability of coatings.
Environmentally friendly materials: With the increasingly stringent environmental regulations, the market demand for low VOC (volatile organic compounds) and non-toxic environmentally friendly coatings continues to increase. As a natural and non-toxic mineral material, magnesium carbonate meets the standards of environmentally friendly coatings, can replace some harmful chemicals, and reduce the harm of coatings to the environment and human body.
Fire retardant additives: When magnesium carbonate decomposes at high temperatures, it releases carbon dioxide and water vapor, absorbs a lot of heat, thereby reducing the temperature and delaying the spread of flames. In addition, the magnesium oxide formed after the decomposition of magnesium carbonate can form a protective film on the surface of the coating, further preventing the spread of fire and improving the fire retardant properties of the coating. This makes magnesium carbonate widely used in fire retardant coatings, flame retardant coatings and high temperature resistant coatings.
Antibacterial ingredients: Magnesium carbonate is used as an active ingredient in antibacterial coatings due to its excellent antibacterial and biocompatibility. Through synergistic effects with other antibacterial agents, magnesium carbonate can effectively inhibit bacterial growth on the surface of the coating, reduce the risk of pathogen transmission, and ensure environmental hygiene and safety.
Leveling agent and defoamer: During the processing of coatings, magnesium carbonate is also used as a leveling agent and defoamer. It can improve the flatness and smoothness of the coating during construction, and avoid defects such as brush marks, orange peel or bubbles on the coating surface. At the same time, magnesium carbonate also has good defoaming properties, which can reduce the bubbles generated during the construction of the coating and improve the finish and transparency of the coating.
Stability and durability: Magnesium carbonate, as a filler in the coating, can significantly improve the stability and durability of the coating. Its tiny particle size and uniform distribution enable the coating to form a denser structure during the curing process, thereby improving the anti-permeability and weather resistance of the coating.
In summary, the application advantages of magnesium carbonate in coatings are multifaceted and significant. With the continuous advancement of technology and the continuous expansion of the market, it is believed that the application of magnesium carbonate in the coatings field will become more extensive and in-depth.