The product name of "nano-silicon dioxide" is "white carbon black", but its name derives from its white color. "White Carbon" was developed by East China University of Science and Technology and Shanghai Chlor-alkali Co., Ltd. The person in charge of the project and professor of East China University of Science and Technology said that at the end of October 2003, the production line of 200 tons of “white carbon black†will be officially put into operation. It is expected that the successful promotion of this project will generate a production value of 1 billion yuan. The "silica" preparation technology was successfully developed in Shanghai, breaking the monopoly position in a few countries such as Germany, the United States, and Japan. It also proved the improvement of nanotechnology in China.
Since ordinary silica is only one-hundredth of a millimeter in size, its particles can be touched by hand. However, “silica†is only a few nanometers large, so it has a nano-scale origin, and there are also general two. Silica can not be compared to the use.
"White carbon" is used in cosmetics and has anti-ultraviolet properties; adding it to toothpaste has a clear whitening effect on the teeth; adding it to paper will also significantly increase tear strength and whiteness, " Mixing into the paint will increase the brightness of the paint compared to ordinary silica, it also has a good "reinforcing" effect, the rocket high temperature seals use it, high temperature resistance and tear resistance It will be doubled, and the plastic-steel door and window seals commonly used in home and decorating have become “tough†and will become even tougher.
However, the "white carbon" production process with such a wide range of uses is a world-class problem that the global chemical industry is contending to overcome. At present, the world's demand for it has reached 110,000 tons. China's current demand for it has also exceeded 10,000 tons, because the country could not produce "white carbon" on its own, and the average selling price of the market was as high as 10,000 US dollars per ton.