Colloidal silica is a suspension of fine amorphous, nonporous, and typically spherical silica particles in a liquid phase. The liquid is denser than water and has been stabilized electrostatically to allow the particles to stay suspended in the solution.November 04, 2018 Industrial Goods
Colloidal silica is a suspension of fine amorphous, nonporous, and typically spherical silica particles in a liquid phase. The liquid is denser than water and has been stabilized electrostatically to allow the particles to stay suspended in the solution. There are many grades of colloidal silica, but all of them are composed of silica particles ranging in size from about 3 nm up to about 150 nm. These particles may be spherical or slightly irregular in shape, and they may be present as discrete particles or slightly structured aggregates. These particles may also be present in a narrow or wide particle size range - depending on the process in which they were created.
Silica sol as an applicable precursor could be used in lots of industrial applications, such as:
Used across the construction industry for increased durability and strength in concrete and cementing operations and ground consolidation.
Enabling precision, strength, safety, and reliability in the foundry industry such as precision investment casting and refractory materials.
Creating nearly defect-free, flat surfaces on silicon semiconductor and sapphire wafers, and optical lenses.
Its application in coating industry includes decorative coatings, inorganic & insulation coatings, non-stick coatings, paper, inkjet & photo, pigment & fillers, plastic films, protective coatings, wood coatings are prolonging open-time, improving hardness and durability as well as improving anti-soiling properties.
In addition to stated applications, colloidal silica can be used in adhesives, beverage clarification, catalysts, cleaning products, textiles & fabrics, gel & AGM batteries, and water treatment.
Particle size below 50 nm and colloidal concentration of silica is 11/2 Wt%.