Comprehensive review of the top ten application areas of calcium carbonate
Plastic industry
The largest consumer market for calcium carbonate, accounting for over 40%
Core function
1. Can replace resin raw materials in large quantities, significantly reducing manufacturing costs;
2. Enhance product rigidity, heat resistance, and dimensional stability, reduce shrinkage and warping deformation during injection molding and extrusion processes;
3. The use of ultrafine or nano-sized calcium carbonate can help improve impact resistance and surface glossiness, and the addition of PE film can form breathable micropores;
4. Optimize the flowability performance of the melt, shorten the injection molding cycle, and thereby reduce the energy consumption of equipment operation.
Selection and Application Points
Pipes, turnover boxes, and packaging products: Choose 800-1500 mesh active heavy calcium carbonate with a filling ratio of 30% -50%;
PE breathable film and high gloss home appliance shell: Recommended for ultra-fine lightweight calcium or nano calcium with a filling ratio of 10% -25% above 1250 mesh;
PLA/PBAT biodegradable plastics: using modified nano calcium, filled with 20% -35%, can regulate the degradation rate;
Rubber industry
Common fillers for semi reinforced systems
Core function
1. Partially replacing carbon black and white carbon black, reducing the cost of rubber raw material input, suitable for the production of light colored rubber products;
2. Improve tensile strength, tear strength, wear resistance, and flexural aging resistance;
3. Optimize the flow characteristics of rubber mixing and extrusion, shorten the vulcanization time, and reduce the Mooney viscosity.
Selection and Application Points
Low end rubber pad and ordinary sole: 400-800 mesh heavy calcium, filled with 30-50 parts;
Sealing strips and rubber hoses: 800-1500 mesh active light calcium, filled with 25-40 parts;
Tire sidewall and precision silicone rubber seals: using nano calcium carbonate, which can replace about 30% of white carbon black;
Papermaking industry
Combining the functions of filler and coating pigment
Core function
1. As a filler in pulp, it can reduce the amount of wood pulp used, improve paper whiteness, opacity, and breathability, and achieve fiber conservation;
2. Used as a paper coating pigment to improve paper smoothness, ink absorption capacity, and printing glossiness, reducing the use of kaolin.
Selection and Application Points
Ordinary writing paper and whiteboard paper filler: 400-1250 mesh ground calcium, filled with 15% -25%;
Copperplate paper coating, inkjet paper, and cigarette paper: using ultra-fine light calcium to pursue higher delicacy and gloss;
Coatings and Ink Industry
Core function
1. Acting as a physical filler, it can partially replace titanium dioxide and significantly reduce the cost of coating raw materials;
2. Adjust the hardness, scrub resistance, crack resistance, and weather resistance of the paint film;
3. By controlling the leveling effect, extinction performance, and anti settling performance, high oil absorption calcium powder can eliminate the need for additional extinction agents in matte coatings.
Selection and Application Points
Latex paint and putty for interior and exterior walls: 1250-2000 mesh heavy calcium, filled with 15% -35%;
Wood and automotive paint: choose ultra-fine light calcium; MS sealant and silicone adhesive specific nano calcium can provide excellent thixotropy;
Offset printing ink: choose low oil absorption heavy calcium; UV ink requires transparent nano calcium to ensure printing transparency and glossiness.
Building materials
Putty, cement, artificial stone, ceramic tiles
Core function
1. Play a filling and leveling function in putty and dry powder mortar, improve polishing and adhesion, while reducing powder costs;
2. Used for concrete and artificial stone, it can improve compactness and compressive strength, and reduce cement consumption;
3. It plays a role in regulating the shrinkage during firing in ceramic tile bodies, improving the flatness of the body, and reducing the defect rate during firing.
Selection and Application Points
Ordinary heavy calcium with a mesh of 800-1500 is generally used, without strict activation treatment requirements; External wall weather resistant mortar can be combined with a small amount of ultra-fine light calcium to enhance crack resistance.
Daily chemical personal care
Toothpaste, cosmetics, skincare products
Core function
1. As the main friction agent of toothpaste, it gently removes dental plaque without damaging enamel; Affordable toothpaste often uses coarse and heavy calcium, while sensitive teeth whitening toothpaste uses ultra-fine light calcium;
2. It plays the role of filling, thickening and shading in color makeup and face cream, adjusting the skin feeling of use, and improving the stability of cream molding.
Selection and Application Points
The toothpaste field usually uses 400-2000 mesh graded calcium powder; It is recommended to use ultra-fine and heavy metal free light calcium for skincare products.
Environmental governance
Flue gas desulfurization, wastewater treatment, soil remediation
1. The flue gas desulfurization process in power plants and steel mills: the gypsum by-product generated by the neutralization reaction with SO ₂ can be reused as a resource;
2. Industrial acidic wastewater treatment: adjusting pH value, adsorbing heavy metal ions and suspended solids in water;
3. Acidic soil improvement: Neutralizing soil acidity, supplementing calcium elements, and used for remediation and treatment of heavy metal contaminated land.
Selection and Application Points
Low cost ordinary heavy calcium can be selected for large-scale desulfurization and water treatment scenarios; The scenario of deep adsorption of heavy metals can be combined with a small amount of nano calcium carbonate.
New Energy
High end materials such as lithium batteries and photovoltaics
Core function (applicable only to nano calcium carbonate)
1. Lithium battery electrolyte additives: adsorb HF impurities, stabilize SEI film structure, and extend battery cycle life;
2. Lithium battery separator coating: Sheet shaped ultrafine calcium can improve the heat resistance and thermal insulation safety of the separator;
3. Photovoltaic packaging adhesive: Nano calcium can adjust the thixotropy and anti-aging properties of the colloid, and enhance the overall weather resistance of the module.
Selection and Application Points
To meet the standards of high purity and low impurities, wet modified nano calcium is used with a water content controlled at ≤ 0.1%.
Sealing glue and adhesive
MS adhesive, silicone adhesive, epoxy adhesive
Core function
1. Give the system good thixotropy to ensure that the glue does not flow and the facade construction does not sag;
2. Improve the elongation, crack resistance, and adhesive strength of colloids;
3. Replace white carbon black and reduce the production and manufacturing of high-end sealants
Selection and Application Points
The main recommendation is to use active nano calcium carbonate, compounded with 5% -10% ultrafine heavy calcium to reduce viscosity and control overall costs; The filling range is 40% -60%.