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The main component of silica in the end is what
Dec 14, 2015

Silica gel is a highly active adsorption material is amorphous material, its chemical formula is mSiO2 ยท nH2O. Insoluble in water and any solvent, non-toxic, odorless, chemically stable, it does not react with any substance except alkali, hydrofluoric acid. Various types of silicone because different manufacturing method for the formation of different pore structure. Chemical composition and physical structure of silica gel, determines that it has many other features of similar materials difficult to replace obtained: adsorption properties, thermal stability, chemical stability, high mechanical strength.

Silica according to the size of the aperture is divided into: large pore silica gel, rough hole silica gel, B type silica gel, pore silica gel. Due to the different pore structure, adsorption properties so they have their own characteristics. Coarse pore silica gel in the case of high relative humidity have higher adsorption capacity, pore silica gel in the case of low relative humidity higher than the coarse pore silica gel adsorption capacity, while the B-type silica gel because the pore structure between the coarse pore among silica gel, the adsorption amount between the crude, between the pores. Wide pore silica is generally used as a catalyst carrier, matting agents, toothpaste abrasive. You should choose different varieties for different purposes.


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