Properties and uses of silica sol

Silica Sol Properties:

High Stability: Silica sol has high colloidal stability and is not prone to coagulation,

ensuring its reliability during application

High Specific Surface Area: Silica sol has a small particle diameter and a large specific surface area, which gives it excellent adsorption capacity and allows it to effectively adsorb and immobilize other substances.

Good Rheological Properties: Silica sol has excellent fluidity and permeability, allowing it to penetrate even tiny gaps and form a uniform coating or filling layer.

Corrosion Resistance: Silica sol has excellent chemical stability and is resistant to corrosionby acids, alkalis, and other chemicals, making it suitable for use in various harsh environments.

Low Viscosity: Silica sol has a low viscosity, allowing it to penetrate other substances and exhibit excellent dispersibility and permeability when mixed with other substances.

Good Adhesion: Due to its uniform micelle size, silica sol has excellent adhesion and forms a hard gel structure after drying and curing

High Temperature Resistance: Silica sol is heat-resistant and can generally be used at temperatures around 1500°C to 1600°C.

Hydrophilicity and Oleophobicity: Silica sol has good hydrophilicity and strong oleophobicity. It can be diluted to any concentration with distilled or ion-free pure water, and its stability increases with increasing dilution. When added to organic matter or various metal ions, it can also become oleophobic.

Applications of Silica Sol:

Precision Casting: Used as a binder in precision casting, it can improve the dimensional

accuracy and surface quality of castings.

Coatings: Used as a base material for coatings, it improves the hardness, water resistance,

and corrosion resistance of coatings.

Textiles: Used as a waterproofing agent, wrinkle preventer, and softener for textiles,

improving their quality and comfort.

Construction: Used as an additive in concrete, it improves its durability,

frost resistance, and fire resistance.

Petrochemicals: It also has applications in the petrochemical industry,

such as as a catalyst carrier to enhance catalytic effectiveness.

Binder for Refractory Materials: It exhibits strong bonding strength and

high-temperature resistance.

Papermaking Industry: Can be used as an anti-sticking agent for cellophane,

a pre-treatment agent for photographic paper, and an anti-slip agent for cement bags.

Used as a silicon steel sheet treatment agent, a dispersant for picture tubes,

and an anti-slip agent for floor wax.

Used in thin shell casting: It increases shell strength and produces a smooth casting finish.

Used as a film-forming aid in wood coatings.