Water Milling Heavy and Active Ultrafine Nanometer Calcium Carbonate 5000 Mesh - Ultra-Pure Nanometer Calcium Carbonate for Specialty Coatings

Select high-quality calcite, adopt vertical mill, 5000L large stirring mill imported from Germany, hot gas flow mill, modifier and other equipment, and then dry grinding, wet grinding, drying, dispersing and modifying to ultra-fine and nano-sized calcium carbonate.

Product whiteness: 94% - 95%- 96%

Calcium carbonate content:≥98%

Application field:mainly used in high-grade coatings, high-grade paints, inks, PVC, PE, PPR water supply and large sewage pipes, plastic steel profiles, polymer masterbatch, non-woven masterbatch, soft cable masterbatch, silicon copper adhesive, and breathable film.

Product Features

Ultra-small particle size and uniform distribution: Through the water grinding process, its particle size can reach 5000 mesh, D97 can usually be controlled below 2μm, and some products can even reach 100-200nm, and the particle size distribution is extremely narrow and uniform.

This ultra-small particle size gives it a large specific surface area, which can fully contact and combine with the resin and other components in the coating, greatly improving the performance of the coating.

High purity and whiteness: The calcium carbonate content is generally ≥99%, and the impurity content is extremely low. For example, impurities such as iron and manganese are strictly controlled below 0.005%, and the whiteness is ≥97%.

High purity ensures the stability and purity of the product, and high whiteness gives it excellent hiding power and optical properties in the coating. It can partially replace expensive white pigments such as titanium dioxide, reduce the cost of coatings, and maintain or improve the whiteness and gloss of the coating.

Good dispersibility: After special surface activation treatment, such as modification with stearic acid, silane coupling agent, etc., the particle surface has lipophilic and hydrophobic characteristics, and can be quickly and evenly dispersed in both water-based and solvent-based coating systems, and is not easy to agglomerate.

This allows the coating to maintain good stability and rheology during production and use, and avoids the degradation of coating performance caused by filler agglomeration.

Controllable crystal morphology: The water grinding process can accurately control the crystal morphology of calcium carbonate, such as preparing spherical, cubic or other special crystal forms.

Spherical particles help improve the fluidity and glossiness of the coating, and are suitable for special coatings with high gloss requirements; cubic particles can increase the density and hardness of the coating, and perform well in special coatings such as anti-corrosion and wear-resistant.

Product advantages

Improve coating performance: Nano-scale particles can be filled into the microstructure of the coating, enhance the density of the coating, and improve the coating's water resistance, corrosion resistance, weather resistance and other properties.

In the water resistance test, the water absorption rate of the coating can be reduced to less than 5%; in the salt spray test, after 5000 hours of testing, the coating can still maintain good integrity, without obvious rust and blistering. At the same time, it can also improve the hardness, wear resistance and scratch resistance of the coating, making the coating more durable.

Improve the rheological properties of the coating: it can effectively adjust the viscosity, thixotropy and leveling of the coating.

During the coating construction process, good thixotropy makes the coating easy to flow and spread when brushing or spraying, and it can quickly restore a certain viscosity after construction to prevent sagging, ensuring the uniformity and thickness consistency of the coating.

The improvement of leveling makes the coating surface smoother and flatter, improving the appearance quality of the coating.

Wide applicability: Applicable to a variety of special coating systems, such as automotive original paint, aerospace coatings, electronic equipment coatings, marine anti-corrosion coatings, etc.

In the original paint of automobiles, it can improve the gloss and vividness of the coating, making the surface of the car more beautiful and beautiful, while enhancing the stone impact resistance and chemical corrosion resistance of the coating to protect the car body; in aerospace coatings, it can meet the requirements for high performance of the coating, such as high and low temperature resistance, radiation resistance, etc.; in electronic equipment coatings, it can provide good insulation and anti-electromagnetic interference performance; in marine anti-corrosion coatings, excellent water resistance and salt spray resistance can effectively protect marine facilities from seawater and salt spray erosion.

Excellent environmental performance: The product complies with international environmental standards, such as REACH, RoHS, etc., does not contain harmful heavy metals and volatile organic compounds (VOC), has low dust emissions, and has little impact on the environment and human health during the production and use of coatings, which helps enterprises meet environmental protection requirements and produce green and environmentally friendly coating products.

High cost performance: Due to its excellent performance, it can partially replace expensive functional fillers such as titanium dioxide and fumed silica, reducing the cost of raw materials for coatings.

At the same time, good processing performance and dispersibility reduce energy consumption and equipment wear in the production process and improve production efficiency. Overall, it has a high cost-effectiveness and can bring significant economic benefits to coatings manufacturers.

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