In fact, there are many kinds of silica. Today, our silica manufacturers will tell you about the physical and chemical properties of precipitated silica.



White carbon black, also known as light silica, scientific name precipitation hydrated silica. It is a high-tech inorganic fine chemical product, mainly composed of SiO2. The performance is similar to carbon black, and the appearance is white highly dispersed amorphous powder or flocculent powder, and some are processed into granules as commodities. Light weight, original particle size 0.3 μ M U.M or less, relative density 2.319 ~ 2.653, melting point 1750 ℃, insoluble in water and most acids, water absorbent, and will become aggregated fine particles after absorbing water in the air. Soluble in caustic soda and hydrofluoric acid. It is stable to other chemicals, resistant to high temperature, does not decompose and does not burn. It is chemically inert to the matrix, active ingredients and additives, and has good compatibility with vitamins, hormones, fluorides, antibiotics, enzymes and many active ingredients commonly used in cosmetics.


Our white carbon black manufacturer will tell you about its physical properties.


And has high electrical insulation. Due to its porosity and large specific surface area, it has a large dispersion force in raw rubber, and shows high reinforcement when filled in rubber. The hydrophobic white carbon black after surface modification is easily soluble in oil. When used as a reinforcing filler for rubber and plastics, the mechanical strength and tear resistance of its products will be significantly improved. Due to different manufacturing methods, the physical and chemical properties and microstructure of white carbon black will be different, so its application fields and effects are also different.