Evonik AEROSIL R812 is a hydrophobic fumed silica imported from Germany, surface-modified with HMDS. It is designed for efficient rheology control in complex polar systems, featuring strong hydrophobicity, high transparency and easy dispersion, widely used in coatings, adhesives, silicone rubber and other fields.
High-end hydrophobic modification - Treated with D4, stable hydrophobicity, suitable for water-resistant product systems, improving water and moisture resistance of the system
Efficient fluidity optimization - Significantly improves fluidity of powder and liquid systems, anti-caking, easy to add, enhancing processing efficiency
Excellent thixotropic thickening - As an efficient thickener, precisely regulates system thixotropy, with good anti-sagging and shape retention
Strong lipophilicity enhancement - Improves system lipophilicity, suitable for paste daily chemicals, oil-based coatings and other systems, enhancing compatibility
Multifunctional reinforcement - As an RTV silicone rubber reinforcing agent, improves product mechanical strength, and adapts to multi-industry scenario needs
Daily chemical field - Cosmetics and toothpaste, improving lipophilicity and thixotropy, optimizing product texture and user experience
Pharmaceutical field - As a functional additive, improving powder fluidity, enhancing preparation stability and processability
Coatings and inks - Controlling thixotropy and anti-sagging, improving system stability and construction uniformity
Adhesives and sealants - Optimizing fluidity and thixotropy, enhancing bonding strength and water resistance
Plastics and silicone rubber - Reinforcing RTV silicone rubber, improving mechanical properties, and improving plastic processing fluidity
| Brand | Evonik |
| Product Series | AEROSIL Hydrophobic Fumed Silica |
| Product Type | Hydrophobic Fumed Silica |
| Surface Treatment Agent | Octamethylcyclotetrasiloxane (D4) |
| BET Surface Area | 170±20 m²/g |
| Average Primary Particle Size | 12 nm |
| Compacted Density (Approx.) | 50 g/L |
| Loss on Drying (105℃, 2h) | ≤0.5 wt% |
| Loss on Ignition (1000℃, 2h) | ≤2 wt% |
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