nano colloidal silica for battery

Silica sol is a kind of is widely used in the precision casting industry, it is a dispersion of silica particles in the water or other solvents.At present, the relative to foreign, domestic silicon sol and a lot of defects, especially the characteristics, such as impurity, small variety, etc.Below to understand the production process of silica sol and USES.
The production technology of silica sol
In short, the making craft of silica sol with three methods.
1, ion exchange resin in sodium silicate dilute solution method.It is through the modulus of sodium silicate solution for 3.5 to contain water to dilute, Na201.15 SiO24 % % of various materials such as matching.
2, use the method of sulfuric acid and sodium silicate dilute solution.
3, the hydrolysis of ester silicate method.
Eventually, of course, there are other methods, the principle was to remove soluble in the sodium ions in the water.
Silica sol
1, do binder
Good bonding ability of silica sol and the fire resistance strong adhesive can be used as refractory materials.
2, used for precision casting
Silica sol relative to sodium silicate, more advantages, such as can make the shell mold strength, casting finish higher.
3, coating industry
Colloidal silica used in paint industry, coating can be more strong, and can also fire prevention, aging resistance, etc.
4, used in papermaking industry.
Of course there are other USES, such as can be used as a sizing agent in textile industry and so on.