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Silica gel used in industrial production can be divided into several categories

Generally speaking, silica gel can be divided into two categories: organic silica gel and inorganic silica gel according to its properties and components.

Inorganic silica gel is a kind of highly active adsorption material, usually made by reacting sodium silicate with sulfuric acid, and after a series of post-treatment processes such as aging and acid bubbles. Silica gel is an amorphous material, and its chemical formula is mSiO2. nH2O. It is insoluble in water and any solvents, non-toxic and odorless, chemically stable, and does not react with any substance except strong alkali and hydrofluoric acid. Various types of silica gel have different microporous structures due to different manufacturing methods. 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, and high mechanical strength. It is used as a desiccant for household use. Humidity Regulator, deodorant, etc .; industrial use as oil hydrocarbon decolorizer, catalyst carrier, pressure swing adsorbent, etc .; separation and purification agent for fine chemicals, beer stabilizer, paint thickener, toothpaste friction agent, matting agent, etc.

Organic silica gel is an organosilicon compound, which refers to a compound that contains Si-C bonds and at least one organic group is directly connected to a silicon atom. It is also customary to use oxygen, sulfur, nitrogen, etc. Atom-linked compounds are also regarded as organosilicon compounds. Among them, polysiloxane composed of silicon-oxygen bond (-Si-O-Si-) as the skeleton is the most widely studied, most widely used and most widely used organosilicon compound, accounting for more than 90% of the total dosage .

Squeezed silicone is relatively common, for example, the sealing ring on the household rice cooker is called the silicone seal ring of the rice cooker.

Molded silicone is a little more complicated and irregular in shape, including silicone bowl, silicone ice tray, silicone cake mold and so on.

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