Sipernat 298 is a hydrophilic milled precipitated silica imported from Germany. Designed for high‑grade silicone rubber and sealants, it features high specific surface area and excellent rheology control, efficiently reinforcing HTV/LSR/RTV‑2C, stabilizing viscosity and thixotropy, and acting as carrier, anti‑caking and functional filler.
High surface area reinforcement - Outstanding mechanical strength improvement
Precise rheology control - Stabilizes thixotropy and viscosity
Fine grinding & easy dispersion - Uniform particle, no white spots
Multi-scene adaptation - For silicone rubber, sealants, powder carrier
Excellent processability - Non-sticky, easy demolding
HTV silicone rubber - High reinforcement & rheology stability
LSR silicone rubber - Better mechanical & flow properties
RTV‑2C silicone rubber - Higher strength & longer pot life
Sealants & adhesives - Rheology control & anti-sagging
Powder industry - Anti-caking, flow aid & liquid carrier
| Product Type | Hydrophilic milled precipitated silica |
| Appearance | White powder |
| BET Surface Area | 175–215 m²/g |
| Median Particle Size D50 | 8.5–12.5 μm |
| Oil Absorption (DOA) | 210–240 mL/100g |
| pH Value | 6.0–8.0 |
| Loss on Drying | ≤7.0% |
| SiO₂ Content | ≥98% |
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