Application range: natural rubber, nitrile, styrene butadiene, rubber compounds, etc., suitable for tires, hoses, tapes, oil seals, auto parts and other rubber products.
Application characteristics: After surface modification treatment, nano-calcium carbonate has good compatibility with rubber. It can strengthen, fill, color, improve the performance of the processing and products, and make the rubber easy to mix and disperse. After mixing, the rubber is soft and the rubber surface is smooth; it can substantially improve the extensibility, tensile strength, and tear strength of the product; it can reduce the rubber content or partially replace the expensive white powder such as titanium dioxide and white carbon black. Filler, improve the market competitiveness of products.
One of the main application markets for nanometer calcium carbonate in the rubber industry. The rubber added with sodium calcium carbonate has higher vulcanized rubber growth rate, tearing performance, compression set and yield resistance than those with general calcium carbonate. After adding nano calcium carbonate treated with resin acid, the tear strength of some Yujiao products increased by more than 4 times.
Nano-level ultra-fine calcium carbonate has the characteristics of ultra-fine and ultra-pure. The crystal shape and particle size are effectively controlled during the production process, and the surface is modified. Therefore, it has a three-dimensional structure in rubber and good dispersibility, which can improve the reinforcing effect of the material. For example, chain-like nano-scale ultrafine calcium carbonate, in rubber mixing, the chain-like chain is broken, and a large number of highly active surfaces or points are formed. They form a bond with the rubber long chain, which not only has good dispersibility, And it greatly enhances the reinforcing effect. It is worth noting that it can not only be used alone as a reinforcing filler, but also can be used in conjunction with other fillers according to production requirements, such as: carbon black, white carbon black, light calcium and heavy calcium, titanium dioxide, clay, etc. The purpose of strengthening, filling, toning, improving processing technology and improving product performance, reducing gum content, or partially replacing white carbon black, titanium dioxide and other expensive white fillers.