What is activated calcium carbonate used for?

Anyone who has studied chemistry must be very familiar with the chemical substance calcium carbonate. This is an inorganic compound. Calcium carbonate actually has many common names, such as limestone, marble, etc. The stones that people often see in their lives are rich in calcium carbonate, so calcium carbonate is a very important building material nowadays. So what are the uses of activated calcium carbonate in life?

Uses of activated calcium carbonate:

Crystalline nano calcium carbonate has a fifty-year application history abroad and is widely used in rubber, plastics, papermaking, chemical building materials, inks, coatings, sealants and adhesives and other industries.

Rubber products industry

Nano calcium carbonate is ultrafine and ultrapure. Its crystal form and particle size can be effectively controlled during the production process. Nano calcium carbonate after surface modification has good compatibility with rubber. Therefore, it presents a three-dimensional structure when used in rubber, fundamentally improving the performance of rubber products. In the rubber industry of developed countries, nano calcium carbonate has long been widely used in industries ranging from oil seals and auto parts to tires and tapes. It can not only be used alone as a reinforcing filler, but also can be used in combination with other fillers according to production needs, such as carbon black, light calcium or heavy calcium, clay, titanium dioxide, etc., to achieve the purpose of reinforcement, filling, color adjustment, improving processing technology and product performance, reducing rubber content or replacing part of expensive white fillers such as titanium dioxide and white carbon black.

Needle-shaped calcium carbonate has great reinforcing properties. When used in natural rubber and synthetic rubber, it can substantially improve the elongation, tensile strength, tear strength, etc. of the products. The filling amount is increased by more than 50% compared with ordinary light calcium, which improves the market competitiveness of this type of product.

Coatings Industry

The use of nano calcium carbonate in the coatings industry has been a major development trend in the industry in recent years, making the coating delicate, uniform, quick-drying, and having good optical properties. Compared with the commonly used lead powder, it has stronger adsorption and surface chemical properties, so the surface tension of nano calcium carbonate coating is smaller than that of lead powder coating, and its highly dispersed nature makes its hiding power stronger than that of lead powder coating. The coating using nano calcium carbonate as filler has reduced liquid cohesion, smooth surface coating and good texture.

In view of the characteristics of fillers and aggregates used in coatings, special spindle-shaped nano calcium carbonate is used. Compared with commonly used lead powder and titanium dioxide, the particles of this product are very fine, completely wetted by water, easy to grind and disperse, and have extremely strong adsorption capacity. Its covering power is stronger than lead powder. The surface coating is smooth, colorful and has good texture. It can replace expensive titanium dioxide in large quantities, while reducing the amount of base material adhesive used, greatly reducing costs and achieving significant economic benefits. Nano calcium carbonate has been successfully used by many paint manufacturers to develop advanced nano coatings and improve the technical content of products.

Plastics Industry

Because active nano calcium carbonate has the characteristics of high gloss, low wear rate, lipophilic and hydrophobic surface, it can be filled in polymers such as PVC, PP, PF, and PE. The surface treatment agents for active nano calcium carbonate for plastics mainly include fatty acids, coupling agents, etc., which have excellent compatibility with organic matter. Filling in plastic substrates has the advantages of reducing costs and improving product stiffness, heat resistance and dimensional stability.

The application of nanomaterials to toughen and reinforce plastics is a current hot topic. The company's products have the characteristics of small secondary particle size, narrow particle size distribution, and high dispersion in the products. They are ideal toughening and reinforcing inorganic fillers. In the application of polystyrene and polypropylene granulation, it can greatly improve their impact strength and tensile properties. Practice has proved that by adding the company's products into the mixture of PVC pipes and sheets, the impact strength of the products can be more than doubled, the tensile strength can be significantly improved, and the appearance and processing performance of the products can be greatly improved without changing the cost. Adding nano calcium carbonate to plastic profiles can improve product dimensional stability and rigidity, reduce costs, and improve surface gloss and other related technical indicators such as impact strength.