In today’s industrial production, there is a white powder that, due to its unique physical and chemical properties, is widely used across multiple fields. It is calcium carbonate powder. From building materials to food additives, from plastics and rubber to pharmaceuticals and cosmetics, the presence of calcium carbonate powder is ubiquitous, making it an indispensable key raw material in modern industry.
The papermaking industry is one of the traditional application areas for calcium carbonate powder. In the papermaking process, calcium carbonate powder is mainly used as a filler and coating pigment. It can improve the whiteness, opacity, and smoothness of paper, enhance the ink absorption and printability of paper, making it more suitable for printing. Moreover, calcium carbonate powder can also reduce the hygroscopicity and deformation of paper, and enhance the strength of paper. In the production of some high-grade papers, the usage of calcium carbonate powder can even reach over 30%.
In the production of plastic products, the application of calcium carbonate powder is equally extensive. It can enhance the dimensional stability, hardness, and rigidity of plastic products, while also improving the processing performance and surface gloss of plastics. More importantly, the addition of calcium carbonate powder can reduce the cost of plastic products, making them more competitive in the market. In addition, calcium carbonate powder can also endow plastic products with some special properties, such as insulation and flame retardancy.
Calcium carbonate powder is mainly used as a pigment in coatings. It can enhance the hiding power and filling properties of coatings, and improve the rheological properties of coatings. In waterborne coatings, the usage of calcium carbonate powder can reach 20-60%. Moreover, calcium carbonate powder can also be used as a matting filler for the production of matte or semi-matte coatings. In some special coatings, such as metal rust-proof coatings, calcium carbonate powder also has a certain rust-preventing effect.
In the production of rubber products, calcium carbonate powder is widely used for filling and modification. It can increase the volume of rubber products and reduce production costs. At the same time, calcium carbonate powder can also improve the processing performance of rubber, and enhance the tensile strength, wear resistance, and tear strength of rubber products. In some high-performance rubber products, such as tires and conveyor belts, the usage of calcium carbonate powder can reach over 30%.
In the pharmaceutical field, calcium carbonate powder is used as a drug carrier and additive. It can enhance the stability and efficacy of drugs, and reduce the adverse reactions of drugs. Moreover, calcium carbonate powder can also be used as a calcium supplement to treat calcium deficiency. In some new drug formulations, such as nano-calcium carbonate, it can also be used as a drug delivery system to improve the targeting and bioavailability of drugs.
In the food industry, calcium carbonate powder is widely used as a calcium fortifier and additive. It can supplement the calcium required by the human body and enhance the nutritional value of food. Moreover, calcium carbonate powder can also be used as an anti-caking agent, stabilizer, and acidity regulator for food processing and preservation. In some infant foods and health products, the usage of calcium carbonate powder can reach over 10%.
In the cosmetics industry, calcium carbonate powder is used as a filler, whitening agent, and adsorbent. It can improve the texture and stability of cosmetics, and enhance the usage effect of products. Moreover, calcium carbonate powder can also be used as a sunscreen and concealer for the production of sunscreens and foundations.
In the field of building materials, calcium carbonate powder is widely used in products such as cement, coatings, waterproof materials, and sealants. It can enhance the compressive strength, flexural strength, and durability of cement, while also improving the construction performance and seismic performance of cement. In architectural coatings, the usage of calcium carbonate powder can reach 70-80%.
Calcium carbonate powder, as an important industrial raw material, has been widely used in various fields due to its unique physical and chemical properties. From papermaking to plastics, from coatings to rubber, from pharmaceuticals to food, calcium carbonate powder plays an irreplaceable role. With the continuous progress and innovation of science and technology, the application fields of calcium carbonate powder will continue to expand, bringing more convenience and surprises to human life and industrial production.
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