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China's silicon compounds are mainly developed after the gradual development of the product, so far there are dozens of varieties of silicon dioxide varieties from silica factory, so the gap is still large. China has a high quality and rich resources for the research and development of more silicon compounds to provide a material basis. Over the past decade, not only received the attention of the Ministry of Chemical Industry, and commissioned by scientific research units published "silicon aluminum compounds" information. It is expected that the development of silicon compounds in China will be faster and faster, and the gap between the world's developed countries will become smaller and smaller.

Silica white is a relatively old species of silicon compounds, the mid-1930s, Germany, the Soviet Union, the United States and other countries began to develop, to the late 1940s entered the industrial production, the total production capacity of the eighties 70 ~ 80 Million tons /year. China began to start in the sixties, eighty thousand tons of two plants, the annual output of only a total of only 5000 to 6,000 tons, and the variety is small, poor quality, high energy consumption, not the formation of serialization. Therefore, the task of developing new products and developing applications is arduous.

Appearance is white highly dispersed amorphous powder or flocculent powder, also processed into granular as a commodity. Specific gravity of 2.319 ~ 2.653, the melting point of 1750 ℃. Do not dissolve in water and the vast majority of acids, after the absorption of water will become the accumulation of fine particles. Soluble in caustic soda and hydrofluoric acid. Other chemicals stable, high temperature does not decompose, do not burn. Has a high electrical insulation, porous. Inside the surface area, in the raw rubber in a greater dispersion. The surface modification of the hydrophobic silica is easy to dissolve in the oil, for rubber and plastic as a reinforcing filler, will make its products, mechanical strength and tear resistance significantly improved. As the manufacturing method is different from different silica factory, the physical and chemical properties of silica, microstructure will have some differences, so the application areas and application effects are also different.