1 Application
Silica has been produced since 1948 and is used as a filler in the rubber industry. By the 1980s, about 67% of the world's precipitation white carbon black was used in the rubber industry, of which 45% was used in footwear and 16% in tires 6% is used for other rubber products.

2 Problems
Although the application of white carbon black has developed rapidly in recent years, its development also faces some problems. (1) The compound with silica added is difficult to disperse uniformly. (2) The static electricity accumulates easily in the silica compound. (3) The price of white carbon black is high.

3 Solution
Major manufacturers are developing processing aids that can improve the processing properties of silica. For example, after long-term exploration and precision screening of fatty acid soap additives, it can reduce the storage hardening of silica and improve the extrusion performance of the compounds. . The use of antistatic materials or dispersants in the rubber compound to improve the conductivity of the rubber compound can effectively reduce the accumulation of static electricity. In addition, major white carbon black manufacturers are still working hard to develop new varieties of white carbon black with better reinforcement and dispersion.

4 application and development of China's white carbon black
China's white carbon black production technology has been relatively backward, and the product specifications are single. The situation has improved in recent years, and breakthroughs have been made in process technology. Nevertheless, there are still many problems in the production of white carbon black in our country.For example, the products are still mainly white carbon black with ordinary precipitation method, there are too many manufacturers, and the scale is too small. The yield of French white carbon black is extremely low; high-dispersion white carbon black varieties suitable for "green tires" need to be developed.
Therefore, China should actively develop, produce and use a new series of highly dispersed white carbon black, and strive to improve the stability and purity of white carbon product quality; strengthen the development of white carbon black application technology; and strive to implement the expansion of white carbon by white carbon Planning of black production capacity, development of new white carbon black varieties according to market demand.