White Carbon Black is a general term for white powdery X-ray amorphous silicic acid and silicate products. The following is a detailed introduction to White Carbon Black:

I. Definition and Composition
White Carbon Black mainly refers to precipitated silica, fumed silica, and ultrafine silica gel, as well as powdered synthetic aluminum silicate and calcium silicate. Its composition can be represented as SiO2·nH2O, where nH2O exists in the form of surface hydroxyl groups. White Carbon Black is a porous substance that can dissolve in caustic alkalis and hydrofluoric acid but is insoluble in water, solvents, and acids (except hydrofluoric acid).

II. Classification and Production Methods
White Carbon Black is generally classified into precipitated White Carbon Black and fumed White Carbon Black based on production methods. Fumed White Carbon Black is a white, amorphous, flocculent, semi-transparent solid colloidal nanoparticle (particle size less than 100nm) under normal conditions, consisting entirely of nano-silica. The product purity can reach 99%, with a particle size of 10-20nm. However, the preparation process is complex and the price is high. Precipitated White Carbon Black is further divided into traditional precipitated White Carbon Black and special precipitated White Carbon Black. The former refers to silica produced using sulfuric acid, hydrochloric acid, CO2, and water glass as basic raw materials, while the latter refers to silica produced using special methods such as supergravity technology, sol-gel method, chemical crystal method, secondary crystallization method, or reverse micelle microemulsion method.

III. Main Properties
White Carbon Black is resistant to high temperatures, non-flammable, odorless, and tasteless, with excellent electrical insulation properties. At the same time, due to its unique microparticle structure, it exhibits unusual or anomalous physicochemical properties.

IV. Application Fields
As an environmentally friendly and high-performance additive, White Carbon Black has a wide range of applications in various fields such as rubber products (including high-temperature vulcanized silicone rubber), textiles, papermaking, pesticides, and food additives. For example, in the rubber industry, White Carbon Black can effectively improve the strength, wear resistance, tear resistance, and aging resistance of rubber products; in the coating industry, it can enhance the hiding power, adhesion, and weather resistance of coatings.

In summary, White Carbon Black is an inorganic material with various excellent properties and wide application fields.

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