Guangxi Calcium Carbonate Manufacturers: Different Applications of Calcium Carbonate in Rubber Products. In the rubber industry, calcium carbonate is the third largest inorganic filler and reinforcing agent after carbon black and white carbon black. In recent years, in order to reduce carbon emissions and environmental problems caused by excessive release of carbon black, the application of Guangxi calcium carbonate in rubber has received more attention.

Guangxi Calcium Carbonate Manufacturers: Applications of Different Calcium Carbonates in Rubber Products. In the rubber industry, calcium carbonate is the third largest inorganic filler and reinforcing agent after carbon black and white carbon black. In recent years, to reduce carbon emissions and environmental problems caused by excessive release of carbon black, the application of Guangxi calcium carbonate in rubber has received more attention.

　

 

　　The Role of Guangxi Calcium Carbonate in Rubber

　　As a filler, calcium carbonate can increase the volume of rubber, reduce the cost of products, and improve processing performance without affecting product performance.

　　

 

　　As a reinforcing agent, calcium carbonate can significantly improve the wear resistance, tear strength, tensile strength, modulus, and anti-swelling properties of vulcanized rubber.

　　Guangxi Heavy Calcium Carbonate

　　Heavy calcium carbonate is characterized by high purity, high inertness, good stability, high whiteness, and good dispersibility. It has outstanding filling performance in rubber, is easy to mix and disperse, and the blending amount can reach 100%~250% of the rubber amount, making it a major low-cost filling material in the rubber industry.

　　Guangxi Light Calcium Carbonate

　　Light calcium carbonate is characterized by regular particle shape, narrow particle size distribution, and small particle size. It is a commonly used filler and bulking agent, with a large filling amount, easy extrusion, good gloss, high elongation, and mechanical properties that can exceed those of clay, reaching the level of semi-soft carbon black.

　　Guangxi Active Calcium Carbonate

　　Guangxi active calcium carbonate has the characteristics of small particle size, low oil absorption, good dispersibility, and good reinforcing properties, which helps to improve the physical and mechanical properties of rubber, improve processing performance, and improve the extensibility, tensile strength, and tear strength of products.

　　Guangxi Nano Calcium Carbonate

　　Guangxi nano calcium carbonate is characterized by its ultra-fine and ultra-pure nature. During production, not only the crystal form and particle size are effectively controlled, but also the surface is modified, resulting in a three-dimensional spatial structure in rubber, with good dispersibility and compatibility, improving the mechanical properties of the product.

　　Heavy calcium carbonate is used as the main filler to reduce costs; light calcium carbonate has semi-reinforcing properties and can improve the physical and mechanical properties of vulcanized rubber; active nano calcium carbonate has excellent reinforcing properties and a color-adjusting and whitening effect, and can partially replace expensive white carbon black and titanium dioxide.

　　How to modify calcium carbonate for rubber use?

　　In recent years, powder surface modification technology has become one of the hot technologies. Among them, surface coating modification is an important type of surface modification technology. Coating, also known as coating or coating layer, is a method of modifying the surface of mineral particles by using inorganic or organic substances to achieve modification.

　　Surface coating of Guangxi calcium carbonate powder is also to introduce a coating layer on its surface as needed. The modified calcium carbonate can be regarded as a composite powder composed of a "core layer" and a "shell layer." By coating a covering layer with a different chemical composition (such as carbon black) on the surface of calcium carbonate, it can have good dispersibility and compatibility with rubber. Different powder coating modification processes can specifically improve its thermal, mechanical, and chemical stability, change its optical, magnetic, electrical, catalytic, hydrophilic, hydrophobic, and sintering properties, and improve its corrosion resistance, durability, and service life.

　　In the future, calcium carbonate for rubber will gradually develop from heavy and light calcium carbonate to active nano calcium carbonate. With the gradual increase in the output of active nano calcium carbonate, various special calcium carbonates are developing rapidly. Rubber, as a fiercely competitive sub-field for calcium carbonate, has attracted much attention in terms of technological development.