Specifications
used for adhesive,batterybeverage&water treatmentcatalyst,ceramics,cleaningconcrete&well cementingcorrosion control coat
Colloidal silica has many benefits for corrosion control coatings.
In the electroplating industry, there is a push to move away from hexavalent chrome (Cr IV) to trivalant chrome (Cr III) for health and safety reasons. It can sometimes be a challenge to replace Cr IV with Cr III, but colloidal silica has been found to improve the performance of Cr III to almost Cr IV standards. Also, colloidal silica has an extra benefit in the stabilization of electroplating baths by providing ionic stabilization without adversely effecting bath performance.
For zinc rich coatings used to protect steel in construction facilities, colloidal silica can be used as a binder. This results in a hard, durable coating that protects steel and prevents oxidation in construction environments.
Technical Data
ITEM | Basic sodium type | |||
JN--20 | JN--25 | JN--30 | JN--40 | |
SiO2, % | 20.0-21.0 | 25.0-26.0 | 30.0-31.0 | 40.0-41.0 |
Na2O, % ≤ | 0.30 | 0.30 | 0.30 | 0.40 |
pH value | 8.5-10.0 | 8.5-10.0 | 8.5-10.0 | 9.0-10.5 |
Viscosity (25°C),mp a.s ≤ | 5.0 | 6.0 | 7.0 | 25.0 |
Density (25°C),g/cm3 | 1.12-1.14 | 1.15-1.17 | 1.19-1.21 | 1.28-1.30 |
Average particle diameter,nm | 10-20 | 10-20 | 10-20 | 10-20 |
Packaging
25kg or 250kg per plastic drum.
Term of validity
One year for the alkali based.