The spherical silica is produced by silica being belted in very high temperature flame.
Spherical silica has characters of high purity, low specific surface, good fluidity, low thermal stress etc.
It is widely used in the fields of EMC, high-tech electronic materials, high grade paints, etc.
| Items | Unit | Typical value | Test Method | |
|---|---|---|---|---|
| Sieve | +20um | % | 0.0032 | Wet Sieving |
| Laser method | D50 | µm | 1.73 | Laser Analyzer |
| D90 | µm | 3.38 | ||
| D100 | µm | 6.76 | ||
| S.S.A. | m2/g | 7.0 | Nitrogen Adsorption Method | |
| Items | Unit | Typical value | Test Method | |
|---|---|---|---|---|
| Chemical Composition | SiO2 | % | 99.5 | Weight Method |
| Fe2O3 | ppm | 40 | Spectrophotometer | |
| Moisture | % | 0.03 | Weight Method | |
| Extraction Water | Ec | µs∕cm | 6.0 | Conductivity Meter |
| Na+ | ppm | 1.3 | AAS | |
| Cl- | ppm | 1.6 | Automatic Potential Titrator | |
| pH | — | 5.2 | PH Meter | |
Above specification are for common uses,and can be adjusted upon user’s request.