Silica sol has good adhesion, and its adhesion can generally reach 460~500N/cm². Its adhesion is widely applicable to a variety of materials.
Metal investment casting: Silica sol has high adhesion and high temperature resistance (melting point can reach 1660℃), and is an ideal adhesive for metal investment casting, which can replace water glass and ethyl silicate.
Petrochemical: Silica sol has a large specific surface area (250~350㎡/g), good insulation (insulation resistance 8X10^8Ω), and adhesion reaches Class C, so it is often used as a carrier for petrochemical catalysts.
Refractory materials: Silica sol has the characteristics of water resistance, fire resistance, and corrosion resistance. It is suitable for fire retardant coatings, interior and exterior wall coatings, and insulating filling coatings in the steel industry. In the refractory industry, silica sol is also often used as a binder for silicate refractory fibers, refractory insulation bricks, and acid-alkali resistant cement.
Electronic industry: Silica sol can be used as a dispersant and binder in the manufacture of color picture tubes, taking advantage of its good dispersibility, insulation and adhesion.
Ceramics and glass: The wear resistance, light transmittance, adsorption and high dispersibility of silica sol make it widely used in ceramic polishing. It can also be used for polishing mobile phone screens, sapphires, glass, etc. to form a polishing and anti-fouling effect.
Papermaking: The dispersibility and adhesion of silica sol can be used for anti-skid kraft paper, film-forming glazing of photographic paper, and strengthening the toughness of pulp.
Textile: Silica sol has a large specific surface area and adsorption, which can be used to increase fiber cohesion, reduce fiber breakage, prevent flying flowers, improve slurry adhesion, shorten drying time, and make fiber products wrinkle-proof and resistant to washing and wear.
Food: The adsorption and dispersibility of silica sol make it a clarifier for juice, rice wine, soy sauce, beer, juice, etc. It can effectively adsorb and separate impurities in liquids, making the product clear and transparent, and harmless to the human body.
In addition, silica sol is also used in anti-slip agents, pharmaceutical industry, toothpaste (increasing the friction of toothpaste), floor wax (anti-fouling, anti-skid), batteries and other fields. In general, colloidal silica is able to adhere to many different types of materials and plays an important role in many industries.
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