Contact: Liang Guiquan
Superfine calcium carbonate is a classification of calcium carbonate, which can be widely used in the plastics industry for wires, leather cloths, molded products, rigid pipes, profiled extrusions, floor tiles, films, EVA sponges, powder coatings for the coatings industry, synthetic resins, Glaze, oil-based paint, emulsion paint, primary paint, rubber industry footwear, wire and cable, tire, sponge, gum paste, rubber lining, belt hose, paper, industrial coating, filling and fuel color Agents, toothpaste, cosmetics, food additives, acid neutralizers, etc.
English name: calcium carbonate, ultra-fine
Classification: There are ordinary ultrafine calcium carbonate and active ultrafine calcium carbonate. Ultrafine active calcium carbonate is superfine calcium carbonate whose surface is treated with emulsifier and surface treatment agent.
Molecular weight: 100.09
Relative density: 2.45 ~ 2.50
Particle size: 0.01 ~ 0.08μm
Specific surface area: 10 ~ 70㎡ / g
Appearance: white fine powder
Solubility: Almost insoluble in water, insoluble in alcohol
Stability: stable in air
Application of superfine calcium carbonate:
Superfine calcium carbonate can be used as a filler for high-end cosmetics, soap, facial cleanser, children's toothpaste, etc. In the industry, ultrafine calcium carbonate is an important ingredient in the culture medium and a calcium source additive. It is used as a buffer for microbial fermentation and is used in the production of antibiotics. It also plays a certain pharmacological role in analgesics and gastric medicine.
Advantages of superfine calcium carbonate:
In addition, the higher the superfine calcium carbonate used for rubber, the higher the oil absorption value, the better the calcium carbonate's wettability and reinforcement to the rubber. Through application, it has been found that among ultrafine calcium with different crystal forms, chain-shaped ultrafine calcium carbonate is used. It has the best reinforcement effect on rubber.
The plastic industry is one of the largest users of the ultra-fine calcium carbonate industry in China, and it is also a field with relatively mature application technology. Ultrafine calcium carbonate is increasing the volume of plastic products, reducing costs, improving stability, hardness and rigidity, improving the processing performance of plastics, improving its heat resistance, improving the light scattering, scratch resistance, smoothness and notch of plastics. The toughening effect of impact strength and viscous properties in the mixing process have obvious effects.
It has been found through application that the application of ultra-fine calcium carbonate for plastics in the form of cubes has the best effect. Generally, products with a cubic crystal form have a low oil absorption value and products with a chain-like crystal form have a high oil absorption value. Because plasticizers are used in plastic processing, if plasticizers are used, Calcium carbonate has a high oil absorption value and a large amount of plasticizer absorption, so that the processing properties of plastics will be poor. For superfine calcium carbonate used for plastic filling, a suitable surface treatment agent and a corresponding activation method should be selected to improve the dispersibility of the product and prevent secondary agglomeration. Due to particle agglomeration, the actual particle size of the calcium carbonate product is much larger than the particle size of the original particles. However, during the processing of plastics, the mixing shear force is limited, and the agglomeration is not easy to break up, which will inevitably cause local defects. Its application effect is worse than ordinary Calcium Carbonate is good.
Properties of superfine calcium carbonate:
The particle size of heavy calcium carbonate is a fine powder with high whiteness between 400 and 2500 mesh. It is made of high-quality calcite ore. It has high content purity, high whiteness, and uniform particle size. At the same time, it has no odor, taste, and corrosion. , No radiation, in line with environmental protection characteristics. Due to the good dispersibility of heavy calcium itself, rubber plastics, paper making, food, medicine, polymer composite materials, daily chemical and other industries are currently the best raw materials and filling materials in these industries.
1. Application of heavy calcium in rubber and building materials. Heavy calcium is a large amount of filler in rubber products, which saves expensive natural rubber and reduces costs. It can also improve the processing performance of rubber and its elongation rate of thio rubber. Tear resistance, compression deformation and flex resistance are significantly better than other additives. The addition of ultra-fine calcium to building materials can improve heat resistance, chemical resistance, cold resistance, sound insulation, shock resistance and easy processing performance, thereby greatly improving performance. Product performance and quality reduce production costs.
2.In the application in the plastic and paper industry, heavy calcium is used to increase the connectivity of plastic products, improve heat resistance, improve the processing properties of plastics, improve heat resistance, improve the processing properties of plastics, scratch resistance, smoothness and It has obvious effects on notched impact strength, etc. The use of heavy calcium in papermaking can reduce the abrasion of the paper machine, improve the whiteness, strength, opacity and smoothness of the paper, and give the paper good bending and softness. To enhance the absorption of ink and water.
3. In the coating, health food and beverage industries, the finer calcium added to the coating can be used as a whitening high-quality filler to improve the gloss of the coating and paint, and at the same time play a reinforcing role, not only reducing production costs, its products The quality and effect can also achieve the same effect, as long as the content of lead, arsenic and other harmful elements to humans and animals in the ultrafine calcium is controlled, the finer calcium as a calcium source additive can be used in the health food and beverage industry. It has the characteristics of high quality, low price, easy absorption, etc. It is currently being researched and applied in milk powder and other aspects.
4. It is necessary to add materials for the production of gussets and plastic master batches.
In the paper industry, as the sizing technology in the papermaking process changes from acid sizing to neutral sizing, it provides a huge potential market for the application of calcium carbonate. Calcium carbonate is used as a papermaking filler with high whiteness, which can greatly improve the performance of paper. Because it replaces the more expensive kaolin, it makes paper mills obtain obvious economic benefits. The ultrafine calcium carbonate particles are small and uniform, and the wear on the paper machine is small. The filling of ultra-fine calcium not only reduces the cost, but also improves the strength, whiteness, opacity, and smoothness of the paper. It also gives the paper good bendability, softness, and good absorption of ink and water. . The content of calcium carbonate in cigarette paper, magazine paper, dictionary paper, 管家婆期期准免费资料精选print, and book paper is more than 5% -30%. The filler of ultrafine calcium carbonate in special paper products such as quantitative coated paper and matte copper paper is even more than 80%.
The printing ink market requires high-performance ultrafine calcium carbonate. Ultrafine calcium carbonate used in ink products shows excellent dispersibility, transparency, excellent gloss and hiding power, and excellent ink absorption and drying properties. The ultra-fine calcium carbonate used in the ink must undergo activation treatment, and the crystal form is spherical or cubic. At present, most domestic high-end ink fillers use ultra-fine calcium carbonate.
As long as the content of lead, arsenic and other harmful elements in ultrafine calcium carbonate is controlled, ultrafine calcium carbonate can also be used as a calcium source additive in the health food and feed industry. It has the characteristics of high quality, low price, and easy absorption. Research and application in milk powder and other aspects have begun, and the application potential in this area is relatively large.
Superfine calcium carbonate can be used as a filler for high-end cosmetics, soap, facial cleanser, children's toothpaste and other daily chemical products. In the pharmaceutical industry, ultrafine calcium carbonate is an important ingredient in the culture medium and a calcium source additive. It is used as a buffer for microbial fermentation and is used in the production of antibiotics. It also plays a certain pharmacological role in analgesics and gastric medicine.