What is the function of calcium carbonate

Calcium carbonate is a compound that many people have learned about in school. It is introduced in the subject of chemistry. It is insoluble in water but soluble in hydrochloric acid, and is widely used in industry. It has no smell. I believe that many people do not know much about it and do not know how to use it. Now let us understand the role of calcium carbonate.

As an important inorganic powder product, calcium carbonate is widely used as filler in the following industries due to its wide range of raw materials, low processing cost, non-toxicity and high whiteness:

1. Rubber: Filling a large amount of calcium carbonate in rubber products can increase the volume of the products, thereby saving expensive natural rubber or synthetic rubber and achieving the purpose of reducing costs; improving processing performance, and changes in the addition ratio will not affect the rubber vulcanization system; improving the performance of vulcanized rubber, playing a reinforcing or semi-reinforcing role; the hardness can be adjusted by changing the amount of calcium carbonate filled; adjusting the viscosity in latex slurry and rubber glue, etc.

2. Plastics: Adding calcium carbonate to plastics can act as a skeleton, improve the dimensional stability of plastic products, improve the hardness and rigidity of plastic products, and change the rheological properties of plastics. It can also improve the surface gloss and surface smoothness of products, reduce the shrinkage, linear expansion coefficient, and creep properties of plastic products, and help the processing and forming of plastics. It can also improve the heat resistance of plastic products, improve the light dispersion of plastics, and reduce the cost of plastic products.

3. Papermaking: Adding a large amount of calcium carbonate to paper can ensure the strength and whiteness of the paper while reducing costs. Calcium carbonate is superior to talcum powder in whiteness, opacity and fineness. Calcium carbonate is used as a white pigment in coated paper. Its advantages are high whiteness, ability to adjust ink absorbency, and good hiding power and optical properties.

4. Paint: Calcium carbonate is a filler used in large quantities in paint and acts as a skeleton. Filling calcium carbonate into oil-based paint can make the paint thicker and thicker, playing a filling and leveling role. Calcium carbonate is an ideal matting filler in topcoats; it is widely used in water-based coatings because it is white, hydrophilic and cheap.

Calcium carbonate also has a wide range of applications in medicine, food, feed, ink, toothpaste, cosmetics and other fields. Moreover, with the progress and development of science and technology and the influence of relevant national policies, the use of calcium carbonate will become more and more extensive, and the demand will also increase.

I believe everyone has a preliminary understanding of the role of calcium carbonate through the introduction of the above content. Many mothers are more familiar with the calcium carbonate particles used to supplement calcium for their children. This is also an important role of calcium carbonate. It is worth noting that workers engaged in the mining and processing of calcium carbonate must take protective measures, because it is easy to affect the body after inhalation.