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Rubber Grade White Granular Silica Precipitated Silica
Chemical Properties
White granular form, Precipitated Silica White Granular Silica can be dissolved by NaOH,HF. Other kinds of acid, water and solvents can not dissolve the product.
Specifications
| Precipitated Silica White Granular |  |
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| Type | Felcosil-175GR | Felcosil-185GR | Felcosil-195GR |
| Heating loss（105° 2h）, % | 4.0-8.0 | ||
| Lgniting loss（1000° 2h）, % | ≤7.0 | ||
| DBP Absorption，cm³/g | 2.00-2.80 | ||
| Sieve residue，% | 60 Mesh≥75 | ||
| pH（5% suspension） | 6.0-8.0 | ||
| SiO2 % Min，% | ≥97.0 | ||
| BET specific surface area，m²/g | 170±15 | 180±15 | 190±15 |
| Salt as NA2SO4，% | ≤2.0 | ||
| Pellet hardness | ≤70 | ||
Application
- Precipitated Silica White Granular are mainly used in Shoe making, Rubber Roller and Tyre industries. It is so low dust,high bulk specific weight that it can be easy to process.
- Precipitated Silica White Granular possesses a high reinforcing potential and imparts to rubber compounds particularly high Shore hardness, tensile strength, tear resistance and abrasion resistance. In order to achieve optimum rubber-technical data the addition of activators like glycols, amines or other alkaline accelerators is necessary
