Large particle size and high concentration: The particle size of large-particle silica sol is usually larger. Compared with ordinary silica sol, its particle size may range from tens of nanometers to hundreds of nanometers. This large particle size characteristic gives silica sol a unique advantage in application. High-concentration silica sol usually contains more silica particles, which are more evenly distributed in the dispersion, which is conducive to the formation of a stable colloidal system.
Excellent film-forming performance: Large-particle silica sol can form a solid film by drying or sintering. This film is not prone to cracking and has good mechanical strength and stability.
Excellent bonding performance: Large-particle silica sol has excellent bonding properties in the fields of coatings, refractory materials, etc., making the coating or refractory layer more solid and improving the service life and performance of the product.
Strong adsorption capacity: Large-particle silica sol has a large specific surface area, which makes it have a strong adsorption capacity and can adsorb a large amount of inorganic and organic matter.
High friction coefficient: Due to the large particle size, silica particles can increase the friction coefficient when attached to the solid surface, thereby improving the wear resistance of the material surface. This property has important application value in the fields of precision casting, ceramics, etc.
Strong filling ability: Large-particle silica sol is easier to penetrate and fill into porous materials, making the product surface smoother. This property has important application value in the fields of coatings, papermaking, etc.
Good wetting performance: The dispersibility and permeability of silica sol enable it to evenly cover the surface of the substrate to form a uniform coating or film layer.
Good suspension stability: Large-particle silica sol is easy to form a uniform fine-porous gel, which is conducive to the uniform dispersion of powder and increases the stability of the suspension. This stability makes it difficult for silica sol to stratify or precipitate during storage and use.