According to the pH range, the transparent dispersion of nano-silica can be divided into basic transparent dispersion of nano-silica (PH=8-11), neutral transparent dispersion of nano-silica (pH=6-8) and acidic transparent dispersion of nano-silica (pH=1-5). SAT NANO adopts a special process and dispersion process to prepare a series of nano-silica transparent dispersion products with good dispersion and high solid content, good stability and high transparency. In the production process, nano-silica transparent dispersion has greater application advantages than silica powder, and has the characteristics of convenient use, no dust pollution, convenient transportation and easy storage. The storage stability of nano-silica transparent dispersion is different in different pH range. Generally speaking, the storage stability of the alkaline nano-silica transparent dispersion is longer, which can reach several years. This is because the surface of nano-silica particles in the transparent dispersion of alkaline nano-silica has negative charge. Therefore, nano-silica particles are mutually exclusive and difficult to agglomerate, so they can maintain very good stability.

Neutral transparent nano silica dispersion is a transparent nano-silica dispersion containing a small amount of alkali metal ions or ammonium ions. The zate potential on the surface of nano-silica particles is smaller than that of the alkaline nano-silica transparent dispersion, and its storage time is shorter than that of the alkaline nano-silica transparent dispersion.

The surface of nano-silica particles in acidic nano-silica transparent dispersion is rich in silicon hydroxyl. During storage, condensation reaction between hydroxyl groups will occur gradually. Therefore, the acidic nano silica transparent dispersion will gradually become gel, and its viscosity will gradually increase with the passage of time, and finally the gel will be gelatinized. During the drying process of acidic nano-silica transparent dispersion, the condensation reaction between the silicon hydroxyl groups will occur between the nano-hydroxysilane particles, so the binding force between the particles is greater than that of the alkaline nano-silica transparent dispersion or the neutral nano-silica transparent dispersion. As a high-temperature adhesive field, it will play a better role in bonding.