Calcium carbonate is one of the earliest and most widely used fillers in the rubber industry. The large-scale addition of calcium carbonate to rubber increases the volume of the product, saving on expensive natural rubber and thus reducing costs. The addition of calcium carbonate to rubber results in higher tensile strength, wear resistance, and tear strength than pure rubber vulcanizates, and it exhibits a significant reinforcing effect in both natural and synthetic rubbers. It can also adjust viscosity.

The role of light calcium carbonate

　　Light calcium carbonate has a wide range of uses and applications in the following industries:

　　Rubber industry

　　Calcium carbonate is one of the earliest and most widely used fillers in the rubber industry. A large amount of calcium carbonate is filled into rubber to increase the volume of the product, thereby saving expensive natural rubber and reducing costs. Adding calcium carbonate to rubber results in higher tensile strength, wear resistance, and tear strength than pure rubber sulfide, and it has a significant reinforcing effect in both natural and synthetic rubber. It can also adjust viscosity.

　　Plastics industry

　　In plastic products, calcium carbonate acts as a skeleton, playing a significant role in the dimensional stability of plastic products. It improves the hardness of the products and enhances the surface gloss and smoothness. Adding calcium carbonate to general plastic products can improve heat resistance. Because calcium carbonate has a whiteness of over 90%, it can also replace expensive white pigments to provide a certain whitening effect.

　　Paint industry

　　Calcium carbonate is used extensively in the paint industry and is an indispensable skeleton. In thick paints, the amount used is over 30%; in phenolic resin magnetic paint, it's 4-7%; and in phenolic resin fine-textured wrinkle paint, it's over 39%.

　　Water-based coatings industry

　　In the water-based coatings industry, its applications are even more extensive. It allows the coating to remain non-settling, easily dispersible, and have good gloss. The amount used in water-based coatings is 20-60%.

　　Others

　　In addition, calcium carbonate plays an important role in the papermaking industry, ensuring paper strength and whiteness at a lower cost. In the cable industry, it provides a certain degree of insulation. It can also be used as an abrasive in toothpaste.

　　Production methods of light calcium carbonate and main uses of nano calcium carbonate