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Introduction Of Precipitated Silica In Quanxu

2024-08-16

Precipitated silica products are commonly known as white carbon black in the industrial field, also known as hydrated silica and light silica. The chemical expression is generally written as mSiO2·nH2O. It appears as a white, highly dispersed amorphous powder, and is also processed into granules as a commercial product. . Specific gravity is 2.319~2.653, melting point is 1750℃, insoluble in water and most acids, will become aggregated fine particles after absorbing moisture in the air, soluble in caustic soda and hydrofluoric acid, stable to other chemicals, resistant to It does not decompose at high temperatures, does not burn, has high electrical insulation, porosity, large internal surface area, water absorption, and is non-toxic. Precipitated silica products have the following characteristics: adhesion, anti-adhesion, anti-caking, agglomeration, controlled release, carrier, flow aid, improved printing effect, mechanical effect, special additives for thermoplastic plastics, reinforcement, rheology control, enhanced white. Surface-modified hydrophobic silica is easily soluble in oil and can be used as a reinforcing filler in rubber and plastics, which will significantly improve the mechanical strength and tear resistance of the product. Due to different manufacturing methods, the physical and chemical properties and microstructure of silica will be different, so its application fields and application effects are also different. Surface-modified hydrophobic silica is easily soluble in oil and can be used as a reinforcing filler in rubber and plastics, which will significantly improve the mechanical strength and tear resistance of the product. Due to different manufacturing methods, the physical and chemical properties and microstructure of silica will be different, so its application fields and application effects are also different.

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