Precipitated Silica (Rubber Filler)
CAS Number: 112926-00-8
Precipitated Silica is a high-performance reinforcing filler for rubber, particularly used in green tire technology to reduce rolling resistance while maintaining wet traction. When used with a silane coupling agent (e.g., Si69), it forms strong silica-polymer bonds that improve tensile strength, tear resistance, and abrasion resistance. Silica-reinforced compounds offer the best balance of performance for passenger tire treads.
Technical Specifications
| pH | 6.0–8.0 |
| appearance | White amorphous powder |
| moisture (%) | ≤6.0 |
| BET surface area (m²/g) | 100–200 |
| DBP absorption (mL/100g) | 180–250 |
Applications
- Green tire tread compounds
- Footwear sole compounds
- Silicone rubber reinforcement
- Industrial rubber conveyor belts
- High-performance rubber seals
Key Features
- Reduces rolling resistance for fuel savings
- Excellent wet traction performance
- Requires silane coupling agent for optimal reinforcement
- Superior to carbon black in light-colored rubber
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CAS Number
112926-00-8
Category
Plastic / Rubber AdditivesAvailability
In StockSample
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