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Common sense of silica gel
- Dec 11, 2017 -

Alias: Silicone rubber, is a highly active adsorbent material, is an amorphous material, the chemical formula is mSiO2 · nH2O. Silica gel insoluble in water and any solvent, non-toxic and tasteless, chemically stable, except alkali, hydrofluoric acid does not react with any substance. Various types of silica gel because of their different manufacturing methods and the formation of different micro-porous structure. Silica gel chemical composition and physical structure, it has many other similar materials difficult to replace its characteristics: high adsorption, thermal stability, chemical stability, high mechanical strength and so on.


In general, silicone by its nature and composition can be divided into two categories: silicone and inorganic silica gel. According to the composition of the shape is divided into extruded silicone and molded silicone.

Inorganic silica gel is a highly active adsorbent material, usually with sodium silicate and sulfuric acid reaction, and aging, acid bubble and a series of post-treatment process and prepared. Silica is an amorphous material, its chemical formula is mSiO2 .nH2O. Do not dissolve in water and any solvent, non-toxic and tasteless, chemically stable, except alkali, hydrofluoric acid does not react with any substance. Various types of silica gel because of their different manufacturing methods and the formation of different micro-porous structure. Silica gel chemical composition and physical structure, it has many other similar materials difficult to replace its characteristics: high adsorption, thermal stability, chemical stability, high mechanical strength and so on.

Silicone gel is an organosilicon compound which refers to a compound containing Si-C bonds and at least one organic group is directly connected to a silicon atom. It is also customary to use those compounds that react organic silicon with oxygen, sulfur, nitrogen, etc. Atomically linked compounds also serve as organosilicon compounds. Among them, the silicones (-Si-O-Si-) as the backbone of the polysiloxane composition, is the largest number of organic silicon compounds, the most studied, the most widely used category, accounting for more than 90% of the total amount .

Extruded silica gel is more common, for example, household electric rice cookers on the ring, called the silicone rice cooker seals.

Molded silicone is more complicated, irregular shape, including silicone bowls, silicone ice lattice, silicone cake mold and so on.


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