Product Name
Name:Calcium Carbonate Nanopowder
Product Overview
Nano calcium carbonate is a new type of lightweight calcium carbonate products, due to the ultrafine calcium carbonate particles, fine and uniform particle size, narrow distribution, large specific surface area, surface activity and dispersion of good, high surface energy, so that in actual use embodies a lot of ordinary calcium carbonate materials do not have more excellent performance, more widely used. The main synthesis methods of calcium carbonate nanoparticles are carbonation method, precipitation method, etc. The produced calcium carbonate mainly exists in the form of calcite, and its particle size ranges from dozens to hundreds of nanometres. In the polymer melt, the agglomeration of the filler powder will adversely affect the performance of the material, so it is necessary to carry out surface modification of calcium carbonate nanoparticles before filling. Some commonly used surfactants are silane coupling agents, stearic acid, aluminates/titanates coupling agents, etc. These coupling agent molecules usually contain both hydrophilic and hydrophobic groups, which, combined with the groups on the surface of calcium carbonate, are able to reduce the surface energy of the calcium carbonate nanoparticles and improve their dispersion properties.
Technical Parameter
Form: White powder
Particle size: 20-110 nm
Purity: >99%
Moisture content: ~0.28%
Whiteness: ~95.2
PH value: ~9.55
Specific surface area :~24m2/g
Burning loss: ~43.6%
Magnesium oxide content: ~0.26%
Product Features
1）Low water content, nearly neutral, and has good chemical stability, do not react with the curing glue in adhesives.
2）The large amount of addition can greatly reduce the cost of adhesive products (for example, the amount of silicone rubber sealant is more than 50%, and the amount of polyurethane adhesive is 20-30%).
3）With reinforcing effect, can improve the mechanical properties of the adhesive, reduce the shrinkage and thermal expansion coefficient, increase the thermal conductivity, improve heat resistance and adhesion force, improve the mechanical strength (hardness and compression strength) and corrosion resistance; can also lubricating the adhesive, improve the operation conditions, and improve the bonding performance.
4）Nano calcium carbonate has small particle size and large specific surface area, and has good solubility with the adhesive after certain surface treatment. It can be used as a thielectric agent in the adhesive system to adjust the viscosity of the adhesive, prevent the adhesive from sagging during the vertical surface construction, and improve its retention characteristics.
5）In the process of making color material, nano calcium carbonate is easy to color and will not affect the color of the product.
6）It has different modification effects in different adhesives, which can improve its rheological properties in PVC plastic sol; increased strength and wear resistance in silicone structural sealant; incremental reinforcement and heat resistance in hot melt adhesive; and thickening and adhesion in water-based adhesive.
Application Fields
1）Plastics industry: As a filler and enhancer, nano-calcium carbonate can improve the rigidity, toughness and heat resistance of plastic products, and improve their processing performance. For example, adding a small amount of light calcium carbonate to PVC products improves the tensile strength.
2）Rubber industry: Nano calcium carbonate used in high-performance tires, auto parts, bicycle tires and running shoes and other products, can increase the strength, rigidity and durability of the product.
3）Paper industry: used as a filler, nano calcium carbonate can improve the brightness, whiteness and flatness of paper, suitable for advanced packaging paper.
4）Patings and inks: Adding nano-calcium carbonate to coatings and inks gives the coating better gloss and durability, while reducing production costs.
5）Pharmaceutical industry: nano-calcium carbonate, as an important component and calcium source additive in the culture medium, is also used in the production of antibiotics, painkillers and gastric drugs.
Related Information
Please e-mail for the detailed characterization data.
E-mail:sales@xfnano.com
