What is Fumed Silica?

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Fumed silica can be described as a fine white powder that is made by hydrolysis of silicon hailide at high temperatures using an oxyhydrogen torch. It is a form of amorphous silicone dioxide product. The primary particle sizes are between 740 nm and 200-500nm for aggregate particles. The specific area is 100400m2/g. It has high purity and a SiO2 content of not less than 99.8%. There are a number of silica-hydroxyl groups in the vapor phase silicaaggregates that have untreated surfaces. One is an isolated, unperturbed free hydroxyl molecule; the other is bonded silyl group that is linked and forms hydrogen bonds to one another. The vapor-phase silica aggregates have the untreated surfaces. They contain multiple -Oh compound, which can easily form an uniform three-dimensional network structure in the liquid system (hydrogen bond). This three-dimensional network structure, called the hydrogen bond, is formed by external force (shear, electric, etc.). This three-dimensional network structure (hydrogen bond), with an external force (shear, electric, etc.) will be destroyed. The medium will thin out, and the viscosity will drop. When the external force vanishes, the three dimensional structure (hydrogen Bond) will regain itself. Viscosity will rise, and this thixotropy will be reversible.

Fumed silica, one of the most valuable new inorganic material, is one. It is very small in size, has a high specific surface area, high surface adsorption and large surface energy. Its high stability, reinforcing effects, thickening and thixotropy make it an irreplaceable choice in many unique fields.
It is used widely in various industries such as additives and catalyst carriers, decolorizing agent. matting agent. rubber reinforcing. agent. plastic filling agents. ink thickening. metal soft polishing. agents. insulation and adiabatic. spraying materials. medicine. environmental protection.

Fumed silica is primarily composed of two types of “sex”, hydrophilic or waterphobic. You can use physical, chemical, or mechanical methods to alter the fumedsilica interface. These include surface energy, surface wetability, reaction characteristics, surface structure, functional groups, surface structure, and electrical adsorption. This allows it to be used in modern new materials, new technology, or for the development of new technologies.

Hydrophobic fumed Silica Applications
Thickening of certain polar liquids like epoxy resins. Silicone elastomer reinforcement. High addition. Good hydrophobicity. Improved anticorrosion. Powder flow AIDS.

Technology Co. Ltd. is a trusted global supplier and manufacturer of chemicals and nanomaterials. They have over 12 years experience in producing super-high-quality chemicals, such as silicon powder.
We can provide high-quality fumed silicona at an affordable price. Please contact us for more information. (brad@ihpa.net)