Applications of silica sol in various industries
Release date:
2026-02-03
Silica sols can be tailored to meet the needs of various industries by adjusting their particle size, pH value, concentration, and undergoing surface modification.
I. Precision Casting and Refractory Materials
Function: Binder and shell strengthening agent 。
Investment casting (lost-wax process): Silica sol, used as a binder, is mixed with refractory materials such as zircon powder and bauxite to form a slurry, which is then applied onto wax patterns to create a robust ceramic shell. After dewaxing and sintering, the ceramic shell exhibits— High strength, high precision, excellent breathability, and thermal shock resistance. It can cast metal parts with complex shapes and smooth surfaces.
Refractory materials: As a binder, it is used in the production of shaped and unshaped refractory materials to enhance their high-temperature strength and thermal stability.
II. The Paint and Coating Industry
Function: Enhance hardness, wear resistance, weather resistance, stain resistance, and improve construction performance. 。
Architectural exterior paint: Form a dense silicon-oxygen network to enhance the coating film's... Hardness, scrub resistance, weather resistance, and stain resistance 。
Metal anti-corrosion coating: As an inorganic film-forming substance or additive, it enhances the adhesion, compactness, and corrosion resistance of coatings.
Floor paint and wood finish: Enhance Wear resistance and scratch resistance 。
Water-based coatings: As Dispersant and anti-settling agent Improve the suspension stability of pigments and prevent agglomeration.
III. Textile and Paper Industries
Function: Increase stiffness, improve performance 。
Textiles:
Anti-wrinkle and non-iron finish: Reduce formaldehyde emissions and improve the fabric’s elastic recovery rate.
Water- and oil-repellent finishing: As a component of durable finishing agents.
Increase fabric weight and drape: For high-end fabrics.
Papermaking:
Surface sizing agent: Improve the paper's Surface strength, smoothness, stiffness, and printability Reduce shedding and powdering.
Enhancer: Adding it in the wet end can partially improve the dry strength of the paper.
IV. Electronics and Semiconductor Industry
Function: Precision polishing 。
CMP polishing slurry: Used for Nanoscale Planarization Polishing Silica sol particles have moderate hardness and uniform particle size.
V. Chemical and Catalysis Industry
Function: Catalyst support 。
Catalyst support: Applied in fields such as petrochemicals, automotive exhaust purification, and environmental catalysis.
VI. Other Industries
Food and Pharmaceutical: As Clarifying agent, stabilizer, and anti-caking agent 。
Agriculture: As Carrier for pesticides and fertilizers Improve adhesion and sustained-release effect.
Daily chemicals: For use in toothpaste as Mild abrasive or acts as a thickening and stabilizing agent in certain skincare products.
Building materials: Added to concrete, it serves to... Dense reinforcement, impermeability and corrosion resistance The role of.
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