Silica Coatings

Silicon dioxide coatings have been widely used for several reasons: it increases the solubility of the nanoparticles without altering their chemical properties, it is biocompatible, and it provides stability to the particle in changing environmental ...…

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Borosilicate glass of boron

Borosilicate glass, typically 12–15% B2O3, 80% SiO2, and 2% Al2O3, has a low coefficient of thermal expansion, giving it excellent resistance to thermal shock. Schott AG's "Duran" and Owens-Corning's trademarked Pyrex are two prominent brand names fo...…

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Volumetric Feeder for Fumed Silica

Fumed silica is also known as pyrogenic silica because it is produced in flame pyrolysis of silicon tetrachloride or from quartz sand vaporized in a 3000 °C electric arc. Fumed Silica consists of microscopic droplets of amorphous silica fused into br...…

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Fumed silica serves as a universal thickening agent

Fumed silica is a universal thickening agent and an anticaking agent (free-flow agent) in powders. Like silica gel, it serves as a desiccant. It is used in cosmetics for its light-diffusing properties. It is used as a light abrasive in products like ...…

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Dust Collection for Fumed Silica

Fumed silica is an artificial substance, so it’s no surprise that it’s known by multiple names—Diatomaceous earth, Diatomaceous silica, Diatomite, Silicon dioxide (amorphous), and Vitreous silica, at least. In fact, before 1989, its official name was...…

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Silica Fume

Silica fume is a byproduct of the reaction between quartz and coal, coke, or wood chips and also forms in the production of silicon and ferrosilicon alloys. Silica fume is another silica-based additive used in cementitious applications. It is classif...…

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What is the Difference Between Fumed Silica and Silica Fume

The benefits of fumed silica and silica fume in the manufacturing and construction industries are well known. While the two terms seem similar, the products have apparent differences. Unfortunately, most people use the terms interchangeably. Here is ...…

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Adding Fumed Silica to Liquids

What is Fumed Silica?Fumed Silica is a form of silicon dioxide, or silicon, with the molecular formula SiO2 and a molecular weight of 60.0843 g/mol. Fumed silica is also known as pyrogenic silica. It is an odorless white powder consisting of droplets...…

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The Aerosil 200 silica used in accordance with the invention

The Aerosil® 200 silica used by the invention, with a BET surface area, differs from the known Aerosil® 300, which has a surface area of 300 m2/g, not only in the surface size but also in the average primary particle size. The Aerosil® 300 has an ave...…

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Reagglomeration can only be prevented in accordance with the prior art if the hydrophilic silica

The prior art can only prevent deagglomeration if the hydrophilic silica is mixed with 3% by weight of hydrophobic silica and if this mixture is ground utilizing an air-jet mill or a pinned-disc mill (EP 0 076 377 B1). In this case, for a fumed silic...…

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A known procedure is to render fumed silica hydrophobic

A known procedure is to render fumed silica hydrophobic, grind it in a pinned-disc mill, and then classify it (U.S. 2004/0110077 A1). This known silica is used as an external additive in toner mixtures. Reducing the agglomerate size by dispersing out...…

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The primary particles and aggregates of a fumed silica

The primary particles and aggregates of a fumed silica agglomerate form larger assemblies whose size is generally in inverse proportion to the primary particle size or proportion to the specific surface area. The agglomerate size also increases with ...…

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