Neutral colloidal silica is a type of colloidal silica that is neutral in pH, meaning it has a pH of around 7, which is considered to be neutral on the pH scale. Colloidal silica is a type of fine, suspended particulate matter that is made up of microscopic particles of silicon dioxide, which is a common mineral found in nature. Neutral colloidal silica is typically used in a variety of industrial and manufacturing processes, including as a thickening agent, a binder, a suspending agent, and a reinforcing agent. It is also used in some personal care products, such as toothpaste, and in the production of ceramics and glass. Colloidal silica is known for its ability to absorb and retain water, and it can be used to improve the stability and viscosity of various products.
Colloidal silica/Silica sol is a kind of colloid which is formed by nm-grade particles SiO2, dispersed in water. It is odorless, tasteless and nontoxic and its chemical molecular formula is mSiO2·nH2O.
1. The colloid particles are minute, and the particle size can be controlled according to customers' requirements.
2. Colloidal silica/Silica sol has relatively large specific surface area, and high heat-resisting performance (1500-1600"C).
3. With low viscosity, it can soak the places where water soaks; therefore, it presents excellent dispersion and permeability.
4. When the moisture contained in silica sol is evaporated, the colloid grains firmly adhere to the material surface and the combination of silicon and oxygen is then formed between grains. It is a good adhesive.
Product application: coating, refractory industries, investment casting, polishing etc.