The most mature industry in which nano-calcium carbonate is applied is the plastics industry, which is mainly used in high-grade plastics products. It can improve the rheological property of plastic masterbatch and its formability. As a plastic filler, it can toughen and reinforce, improve the flexural strength and modulus of elasticity, thermal deformation temperature and dimensional stability of plastics, and at the same time give the plastics hysteresis. The use of nano-calcium carbonate in ink products shows excellent dispersion, transparency and luster, as well as excellent ink absorption and dryness. Nano-calcium carbonate as ink filler in resin-based ink has the advantages of good stability, high gloss, no influence on the drying performance of printing ink, strong adaptability and so on.
Because the surface of activated nano-calcium carbonate is hydrophobic and hydrophilic, and compatible with resin, it can effectively improve or adjust the rigidity, toughness, smoothness and bending strength of products; improve processing properties, improve rheological properties, dimensional stability and heat resistance of products with filling and strengthening, toughening effect, can replace some expensive fillers and aids, reduce the use of resin. Quantity, thus reducing the production cost of products and improving market competitiveness.
The nano-calcium carbonate treated by surface modification has good compatibility with rubber, which has the properties of reinforcing, filling, color mixing, improving processing technology and product performance. It can make rubber easy to mix and disperse, the gelatin after mixing is soft and the rubber surface is smooth. It can improve the elongation, tensile strength and tear strength of products essentially, reduce the rubber content or partly replace titanium dioxide. Powder, silica and other expensive white fillers, improve the market competitiveness of products.
Nano-calcium carbonate can be used in feed industry as calcium supplement to increase feed calcium content. In cosmetics, because of its high purity, good whiteness and small particle size, it can partly replace titanium dioxide. Adding nano-calcium carbonate to toothpaste can improve its extrusion performance.