Inorganic silicone  rubber

Inorganic silica gel is a kind of highly active adsorption material, usually with sodium silicate and sulfuric acid reaction, and after aging, acid bubble and a series of post-treatment process and made.Silica gel is amorphous material, and its chemical formula is MSiO2. nH2O.Insoluble in water and any solvent, non-toxic and tasteless, stable chemical properties, in addition to strong alkali, hydrofluoric acid does not react with any substances.Various types of silica gel due to its different manufacturing methods and the formation of different microporous structure.The chemical composition and physical structure of silica gel determine that it has many characteristics that are difficult to replace by other similar materials: high adsorption performance, good thermal stability, stable chemical properties, high mechanical strength, etc., family used as desiccant, humidity adjuster, deodorant, etc.;Industry used as oil hydrocarbon decolorizing agent, catalyst carrier, pressure change adsorbent, etc.;Fine chemical separation and purification agent, beer stabilizer, coating thickener, toothpaste friction agent, extinction agent, etc.

Silica gel according to the size of its pore size is divided into: macroporous silica gel, coarse pore silica gel, B type silica gel, fine pore silica gel.Due to the different pore structures, their adsorption properties have their own characteristics.Coarse pore silica gel in the case of high relative humidity has a higher adsorption capacity, fine pore silica gel in the case of low relative humidity adsorption capacity is higher than coarse pore silica gel, and B type silica gel due to the pore structure between the coarse and fine pore, the adsorption capacity is also between the coarse and fine pore.


According to its use, inorganic silica gel can also be divided into beer silica gel, pressure shift adsorption silica gel, medical silica gel, color changing silica gel, silica gel desiccant, silica gel opening agent, toothpaste with silica gel and so on.

Of fine silica

Fine pore silica gel is colorless or slightly yellow transparent vitreous, its basic quality parameters are as follows: average hole spacing 2.0-3.0nm, specific surface 650-800 square meters /g, pore volume 0.35-0.4mL /g, specific heat 0.92KJ/kg.℃, thermal conductivity 0.63KJ/m. Hr.℃.
Application: Suitable for drying, moistureproof and rust proof.It can prevent instruments, instruments, weapons and ammunition, electrical equipment, medicine, food, textiles and other packaging items from being contaminated with moisture, and can also be used as catalyst carrier and dewatering of organic compounds.It can be used as air purifier to control air humidity because of its characteristics of high density and obvious hygroscopic effect under low humidity.It is also widely used in sea transportation, because the goods are often dampened and deteriorated due to high humidity in the transportation process, the product can be effectively moisture-proof, so that the quality of the goods can be guaranteed.Fine pore silica gel is also often used for dehumidification between two layers of parallel sealing window panels, which can maintain the lightness of two layers of glass.

Type B silica gel

Properties: B type silica gel is milky white transparent or translucent spherical or massive particles.B type colloidal pore structure between coarse pore silica gel and fine pore silica gel.Basic quality parameters: pore volume is 0.60 -- 0.85 mL /g, average pore diameter is 4.5 -- 7.0nm, specific surface is 450 -- 650m2/g.

Usage: mainly used as air humidity regulator, catalyst and carrier, pet cushion material, as well as used as the raw material of chromatography silica gel and other fine chemical products.

Coarse silica gel

Coarse pore silica gel is also called C-type silica gel, which is a kind of silica gel. It is a kind of highly active adsorption material. It belongs to amorphous material, and its chemical formula is MSiO2 · NH2O.Insoluble in water and any solvent, non-toxic and tasteless, stable chemical properties, in addition to strong alkali, hydrofluoric acid does not react with any substances.The chemical composition and physical structure of coarse-pore silica gel determine that it has many other similar materials that are difficult to replace the characteristics: high adsorption performance, good thermal stability, chemical stability, high mechanical strength and so on.

Coarse pore silica gel appearance is white, there are block, spherical and microspherical three types of products.Coarse spherical silica gel is mainly used in gas purifier, desiccant and insulating oil deacidifier, etc.Coarse block silica gel is mainly used in catalyst carrier, desiccant, gas and liquid purifier, etc.