Superfine calcium carbonate

Superfine calcium carbonate is a classification of calcium carbonate. The molecular formula is CaCo3, which refers to calcium carbonate with an average diameter of 0.02 M < d < < 0.1 Mu as calcium carbonate powder. It can be widely used in plastics industry for wire, leather cloth, molding products, hard tube, special shape pressure, floor tiles, thin film, EVA sea cotton, powder coatings and combination of coating industry. Resin, glaze, oily paint, milk lacquer, first layer paint, rubber industry footwear, wire and cable, tires, sea cotton, gelatin paste, rubber cloth, belt hose, paper, industrial coating, filling and fuel color agent, toothpaste, cosmetics, food additives, acid and agent.
Superfine calcium carbonate is the calcium carbonate of the particle size of the primary particle between 0.02-0.1 and M. It is the first developed in Japan. It is the cheapest nanometer material. It has the special quantum size effect, small size effect and surface effect, so that it has the strength, transparency, dispersion and touch compared with the conventional powder material. There are obvious advantages in denaturation and leveling, especially the active superfine calcium carbonate, which has the characteristics of functional filler, thus greatly widening its application range. Its toughening and reinforcing effect greatly improves and improves the product performance and quality of the related industries. Superfine calcium carbonate can be used as filler for high-grade cosmetics, soap, facial cleanser and toothpaste for children. In industry, super fine calcium carbonate is an important ingredient in the medium and a calcium source additive. As a buffer for microbial fermentation, it is applied to the production of antibiotics, and it also plays a certain pharmacological role in the analgesics and gastric drugs. In addition, the higher the absorptive oil value of the rubber superfine calcium carbonate, the better the soakability and reinforcing property of the calcium carbonate to the rubber. Through the application, it is found that the superfine calcium carbonate has the best effect on the rubber in the superfine calcium carbonate with different crystalline form.
Plastic industry is one of the largest users of China's ultrafine calcium carbonate industry, and is also a relatively mature field of application technology. Superfine calcium carbonate is obvious in increasing the volume of plastic products, reducing the cost, improving the stability, hardness and steel degree, improving the processing property of the plastic, improving the heat resistance of the plastic, improving the astigmatic property of the plastic, the abrasion resistance, the smoothness, the toughening effect on the notch impact strength and the viscosity in the mixing process. Effect。 It is found that the application effect of the special superfine calcium carbonate in the shape of cubic body shape is the best, the product oil absorption of the product of the general cube crystal form is low, the chain lock crystalline product has high oil absorption value. Because the plasticizer is used in the plastic processing, the quantity of the absorbable plasticizer is high if the calcium carbonate is high in oil absorption and the quantity of the plasticizer is large. The processing performance will be worse. The suitable surface treatment agent and the corresponding activation method should be selected for the superfine calcium carbonate used for plastic filling, in order to improve the dispersibility of the product and prevent the two condensation.
In the paper industry, the filling of superfine calcium carbonate not only reduces the cost, but also improves the strength, whiteness, opacity and smoothness of the paper, and gives the paper a good flexiability, softness, and the absorbability of ink and water. In cigarette paper, magazine paper, dictionary paper, newsprint and book paper, the filling amount of calcium carbonate is more than 5%-30%. In special paper products such as quantitative coated paper and matte copper paper, the filler of superfine calcium carbonate is even more than 80%.
The printing ink market requires high-performance ultra-fine calcium carbonate. Superfine calcium carbonate is used in ink products with excellent dispersion, transparency, excellent gloss and covering power, as well as excellent ink absorbability and dryness. The ultrafine calcium carbonate used for printing ink must be activated and the crystal shape is spherical or cubic. At present, superfine calcium carbonate is used in high-grade ink filling in China.