Precipitated silica is a widely used material for rubber reinforcement. Generally speaking, because the reinforce effect of precipitated silica (except for ultra-fine, surface treatment) is not as good as carbon black, it is a semi-reinforcing filler material. Therefore, the percentage to replace carbon black should be determined according to the use occasion. Precipitated silica is used in rubber products such as inner and outer tires of automobiles, dump trucks, trucks, tractors, forklifts, bicycles, industrial belts, hoses, gaskets, rubber sheets, threshing rubber rollers for grain processing, rubber shoes, etc. Silica is used more or less in all kinds of rubber industrial products. Adding a certain amount of silica to ordinary tires can increase the service life of tires. According to the results of the tire formula research test of a former West German company, if 10-20 parts of silica can be added, the adhesion and tear resistance can be improved, the mileage of the tire can be increased, and the tire's resistance to the road can be enhanced. Holding power to facilitate safe driving. The mileage of tires in my country is lower than the international level, and the non-use of silica is one of the reasons. In addition, due to the high heat of carbon black, silica is also tended to be added to automobile tires used on highways abroad. At present, domestic and foreign markets have increasingly diversified requirements for bicycle tires. For example, new fancy varieties such as tire bead colorization and flashing rings are produced with silica instead of carbon black. In the production of rubber shoes, people not only require fastness to rubber shoes, rain boots, sports shoes, travel shoes, fitness shoes, ballet shoes, etc., but also require beautiful colors, comfortable and lightweight. Silica not only has good reinforcement, abrasion resistance, slip resistance and upper adhesion, but also a good light-colored reinforcement material. Therefore, in the development of rubber shoes, it plays an important role in providing quality and style of shoes. Important role.