What is the difference between coated and uncoated calcium carbonate?
Coated calcium carbonate:
The stones after mining will be carefully selected, classified, controlled, and processed in a closed process, and then crushed and acid-coated by modern technology.
Uncoated calcium carbonate:
Uncoated calcium carbonate powder CaCO3 is a pure, smooth stone powder without fatty acid coating.
Also as a filler, the main characteristics of coated calcium carbonate are that the particle size is less than 0.1um, the particle size is relatively uniform, the specific surface area is large, and the application performance is much better than ordinary calcium carbonate. It is widely used as a filler for PVC cable materials, synthetic leather, polyethylene film, foam plastic slippers, and other products. Plastic products filled with activated calcium carbonate can improve impact resistance. Activated calcium carbonate is used as a rubber supplement. When added to rubber products, its mechanical properties are significantly improved, such as the tear strength can be increased by more than double, and the number of flexion times can be increased by 5-6 times. Therefore, activated calcium carbonate is both a filler and a reinforcing agent for rubber.