What is Fumed Silica?
Since its first production in the early forties of this century, fumed silica has found widespread use in industrial applications. Due to its pyrogenic manufacturing process by combustion of silicon tetrachloride in an oxygen-hydrogen flame, fumed silica offers a variety of fascinating properties. It consists of finely dispersed amorphous silicon dioxide, and its surface is covered by highly reactive silanol groups, which are available for chemical reactions. Additionally, fumed silica shows a space-filling particle structure related to a high surface area and lacking micropores. These characteristics enable fumed silica to act as a free-flow additive in powder-like solids, as a thickener in various liquids, and as a powerful reinforcing filler in elastomers. This paper aims to combine results from surface chemistry and particle characterization to understand the basic mechanisms of fumed silica applications. Recent investigations in the field of surface characterization and interactions are reported.
About Fumed Silica
Fumed Silica is a powder composed of submicron-sized amorphous silica spheres arranged in branching chains of varying lengths. To produce fumed silica, silicon tetrachloride or quartz is burned in a flame of hydrogen and oxygen to yield molten uniform-sized spheres that fuse into three-dimensional aggregates. Though the lengths and shapes of these chains differ (lending it an enormous external surface area), the spheres' size can be controlled during the preparation process. Fumed silica exhibits thixotropic properties and is typically used as a desiccant, thickening and anti-caking agent, and stabilizer in pharmaceuticals, cosmetics, paints and coatings, sealants, and gel-cell batteries (as an additive to acid-based electrolytes). American Elements can produce hydrophilic and hydrophobic (treated) fumed silica in various sizes and surface areas.
Related Elements
See more Silicon products. Silicon (atomic symbol: Si, atomic number: 14) is a Block P, Group 14, Period 3 element with an atomic weight of 28.085. Silicon Bohr MoleculeThe number of electrons in each of Silicon's shells is 2, 8, 4, and its electron configuration is [Ne] 3s2 3p2. The silicon atom has a radius of 111 pm and a Van der Waals radius of 210 pm. Silicon was discovered and first isolated by Jöns Jacob Berzelius in 1823. Silicon makes up 25.7% of the earth's crust by weight and is the second most abundant element, exceeded only by oxygen. The metalloid is rarely found in pure crystal form and is usually produced from the iron-silicon alloy ferrosilicon. As sand, elemental silicon silica (or silicon dioxide) is a principal ingredient of glass, one of the most inexpensive materials with excellent mechanical, optical, thermal, and electrical properties. Ultra-high purity silicon can be doped with boron, gallium, phosphorus, or arsenic to produce Silicon for use in transistors, solar cells, rectifiers, and other solid-state devices extensively in the electronics industry. Silicon originates from the Latin word silex, which means flint or hard stone.
Price of Fumed Silica
Fumed Silica particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Fumed Silica. A large amount of large amount will be lower. The Price of Fumed Silica is on our company's official website.
Fumed Silica supplier
Mis-Asia is a reliable and high-quality global chemical material supplier and manufacturer. It has over 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Fumed Silica, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Fumed Silica, you are welcome to contact us or inquire any time.
