Calcium carbonate（CaCO): an inorganic compound, commonly known as: limestone, limestone, stone powder, marble, etc.Calcium carbonateNeutral, basically insoluble in water, soluble in hydrochloric acid. It is one of the common substances on the earth, which exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of animal bones or shells.Calcium carbonateIt is also an important building material and is widely used in industry.
The role of calcium carbonate in rubber
Calcium carbonateAs one of the earliest and largest fillers used in the rubber industry. A large number of rubber products can not only increase the volume of the product, but also save expensive natural rubber or synthetic rubber to achieve the purpose of reducing costs. nanometer ultrafineCalcium carbonateBecause of its ultra-fine and ultra-pure characteristics, the crystal shape and particle size are effectively controlled in the production process, and the surface modification is carried out. Therefore, it has a three-dimensional structure in rubber, and has good dispersion, which can improve the reinforcement of the material.
The Role of Calcium Carbonate in Papermaking
Calcium carbonate is mainly used as the filler of paper in papermaking. In order to ensure the strength and whiteness of the paper and reduce the cost, a large amount of calcium carbonate is added to the paper. The extensive use of calcium carbonate in the paper industry is based on the international paper industry from acidic papermaking process to alkaline or neutral paper process, so that a large number of inexpensive calcium carbonate can be used instead of the previous talc and porcelain clay.
Calcium carbonateAs a papermaking filler, it has the following advantages: ① high whiteness; ② bulkiness; ③ durability; ④ air permeability; ⑤ can be used as a supplement for titanium dioxide; ⑥ low abrasiveness; ⑦ improve softness; ⑧ improve ink absorption performance; ⑨ low ultraviolet absorption; ⑩ can control combustion.
The role of calcium carbonate in ink
UltrafineCalcium carbonateUsed in ink, showing excellent dispersibility, transparency, excellent gloss and hiding power, as well as excellent ink adsorption and drying, which must be activated, the crystal shape is spherical or cubic.
The Role of Calcium Carbonate in Coatings
in paintCalcium carbonateCan be used as a white pigment, play a skeleton role,Calcium carbonateIt can be used as an extender pigment in the paint industry. DueCalcium carbonateThe color is white, the relative latex in the paint, the solvent price is cheap, and the particles are fine, can be evenly dispersed in the paint, so it is a large number of use of the body pigment. Due to the improvement of environmental awareness, a large number of water-based coatings have been used in construction.Calcium carbonateIt is white and hydrophilic, and the price is cheap, so it is applied.
The role of calcium carbonate in plastics
Calcium carbonateIt is widely used in filling polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS) and other resins. AddCalcium carbonateIt has a certain effect on improving some properties of plastic products to expand its application range. In plastic processing, they can reduce resin shrinkage rate, improve flow condition, control viscosity, improve the dimensional stability of plastic products, improve the hardness and rigidity of plastic products, improve the processing performance of plastic products, improve the heat resistance of plastic products, improve the astigmatism of plastic products, and reduce the cost of plastic products.
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