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Rubber Grade Precipitated Silica
Chemical Properties
Precipitated silica, a form of synthetic amorphous silicon dioxide .
There are different form,powder ,granular and micropeal forms silica.
specifically engineered to deliver consistent reinforcement in rubber and tire applications. improved tensile strength, tear resistance, abrasion resistance, and compound processability, making it an essential component for high-performance rubber formulations in tires, industrial goods, and mechanical rubber products.
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.
SiO2, Precipitated Silica, White Carbon, Silicon Dioxide, Silica Powder, Amorphous Precipitated Silica, Arosil silica
