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Rubber Grade Precipitated Silica
Chemical Properties
Precipitated silica, a form of synthetic amorphous silicon dioxide, is derived from quartz sand, a crystalline form of silicon dioxide. The physical properties of precipitated silica can be manipulated during the manufacturing process to deliver products with a wide range of performance-enhancing features engineered for many different end-use applications.
Specifications
| Precipitated Silica Powder |  |
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| Type | Felcosil-120 | Felcosil-140 | Felcosil-165 | Felcosil-185 | Felcosil-195 |
| Heating loss（105° 2h）, % | 4.0-8.0 | ||||
| Lgniting loss（1000° 2h）, % | ≤7.0 | ||||
| DBP Absorption，cm³/g | 2.00-3.50 | ||||
| Sieve residue，% | 45um≤0.5 | ||||
| pH（5% suspension） | 6.0-8.0 | ||||
| SiO2 % Min，% | ≥97.0 | ||||
| BET specific surface area，m²/g | 120±15 | 140±15 | 160±15 | 180±15 | 190±15 |
| Salt as NA2SO4，% | ≤2.0 | ||||
| Pellet hardness | - | ||||
| Precipitated Silica White Micro Pearl |  |
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| Type | Felcosil-175MP | Felcosil-185MP | Felcosil-195MP |
| Heating loss（105° 2h）, % | 4.0-8.0 | ||
| Lgniting loss（1000° 2h）, % | ≤7.0 | ||
| DBP Absorption，cm³/g | 2.00-3.50 | 2.00-2.80 | 2.00-3.5 |
| Sieve residue，% | 100Mesh≥80.0 | ||
| 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 | - | ||
| 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，% | 60Mesh≥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
Silica Precipitated Silica
- Precipitated Silica are mainly used in Shoe making, Rubber Roller and Tyre industries.
- Precipitated Silica 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
SiO2, Precipitated Silica, White Carbon, Silicon Dioxide, Silica Powder, Amorphous Precipitated Silica, Arosil silica
