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Inorganic silica gel (silica gel)

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 Inorganic silica gel is a highly active adsorption material, usually made by reacting sodium silicate with sulfuric acid and undergoing a series of post-treatment processes such as aging and acid foaming. Silica gel is an amorphous substance and its chemical formula is mSiO2. nH2O. Insoluble in water and any solvents, non-toxic and odorless, chemically stable, and does not react with any substances except strong bases and hydrofluoric acid. Various types of silica gel have different microporous structures due to their different manufacturing methods.

    The chemical composition and physical structure of silica gel determine that it has many other similar materials that are difficult to replace: high adsorption performance, good thermal stability, stable chemical properties, and high mechanical strength. Because of its chemical nature, it is used to make many kinds of silicone products, such as silicone seals, silicone seals, silicone kitchenware, and so on.

    According to the size of its pore size, silica gel is divided into: large-pore silica gel, coarse-pore silica gel, B-type silica gel, and fine-pore silica gel. Due to the different pore structures, their adsorption properties are different. Coarse-pored silica gels have a higher adsorption capacity under high relative humidity conditions, while fine-pored silica gels have a higher adsorption capacity than coarse-pored silica gels with lower relative humidity, while type B silica gels have a coarser and finer pore structure due to their pore structure. Between pores, its adsorption capacity is also between coarse and fine pores. Macroporous silica gel is generally used as a catalyst carrier, matting agent, toothpaste abrasive, etc.

    From the product classification, application characteristics and precautions of silicone rubber, silicone rubber raw materials, liquid silicone rubber raw materials, there will be their own differences. The application technology and main application uses of silicone rubber, liquid silicone rubber raw materials are well known. More to discover, research and explore. Learn about silicone.

    Silicone resin is mainly used as insulating paint (including varnish, enamel, color paint, dipping varnish, etc.) to impregnate H-level motors and transformer coils, and to impregnate glass cloth, glass cloth silk, and asbestos cloth to make motor covers and electrical insulation winding Wait.

    Silicone resin can be used as heat-resistant and weather-resistant anticorrosive coatings, metal protective coatings, waterproofing and moisture-proof coatings for construction projects, release agents, adhesives, and secondary processing into silicone plastics, used in the electronics, electrical and defense industries, as Semiconductor packaging materials and insulation materials for electronic components.

    Silicone resin can also be used as heat-resistant and pressure-resistant anticorrosive coatings, metal protective coatings, waterproofing and moisture-proof coatings for construction projects, release agents, adhesives, and secondary processing into silicone plastics, used in the electronics, electrical and defense industries .

    Compared with other silicone materials, silicone resins have relatively fewer varieties and a smaller market share.

    Using pure silicone resin or modified silicone resin as the base material, the silver paint with aluminum powder can be used at a temperature of 400-450 ℃, or even 600 ℃. Compared with general organic resins, silicone resins have excellent weather resistance. The wavelength range of the sunlight spectrum is more than 300nm, while silicone resins only absorb light below 280nm.

    The hydrolysis of silicone resin often includes two or more monomers with different hydrolysis rates. In order to smooth the difference in hydrolysis speed of different silanes and cause uniform co-hydrolysis conditions, hydrolysis and alcoholysis are usually performed simultaneously.

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