Evonik AEROSIL R805 is a hydrophobic fumed silica imported from Germany, modified with octylsilane. It is designed for polar systems and anti-corrosion coatings, delivering precise rheology control, excellent anti-settling and powder flow aid properties for adhesives, sealants and epoxy coatings.
Octylsilane hydrophobic modification – Uniform surface treatment, strong hydrophobic stability, suitable for various polar and non-polar systems
Rheology control in complex systems – Stable thixotropy in two-component epoxy and other complex liquids, anti-sagging and easy to construct
Pigment anti-settling & anti-corrosion enhancement – Improves pigment suspension stability, enhances coating density and anti-corrosion protection
High-efficiency flow aid for powder coatings – Improves powder fluidity and dispersion, reduces caking, enhances spraying uniformity
Wide and stable system compatibility – Excellent chemical inertness, good compatibility with resins and additives, no impact on system performance
Industrial adhesives and sealants
Industrial paints and anti-corrosion coatings
Two-component epoxy resin multi-coat systems
Powder coating flow aid and anti-caking
Unsaturated polyester and gel coat systems
| Brand | Evonik |
| Product Series | AEROSIL Hydrophobic Fumed Silica |
| Product Type | Hydrophobic Fumed Silica (White Carbon Black) |
| Surface Treatment | Octylsilane |
| BET Surface Area | 150±25 m²/g |
| Bulk Density | approx. 50 g/L |
| Carbon Content | 4.5–6.5 wt% |
| Moisture Content | ≤0.5 wt% |
| Loss on Ignition | 5.0–7.0 wt% |
| pH Value (4% Dispersion) | 3.5–5.5 |
| SiO₂ Content | ≥99.8 w |
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E-mail: wangxingqiang@ericwchem.com
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