Evonik AEROSIL R202 is a hydrophobic fumed silica imported from Germany, modified with polydimethylsiloxane. It is designed for polar resin systems, providing excellent thickening, thixotropy and anti-settling properties for adhesives, sealants and cable gels.
Excellent compatibility with polar systems – Suitable for epoxy, polyurethane, vinyl resins and other complex polar liquids
High-efficiency thixotropy and thickening – Provides stable thixotropic and thickening effects to improve construction performance
Outstanding anti-settling for fillers – Effectively prevents high-density fillers from settling and keeps the system uniform
Superior hydrophobicity – Fully modified surface, water and moisture resistant, enhancing product durability
Special additive for cable gels – Optimizes consistency and thixotropy to ensure cable sealing and protection
Adhesives and sealants
Epoxy resins, vinyl resins and gel coats
Optical fiber and cable gels
High filler content resin systems
Industrial potting and insulation materials
| Brand | Evonik |
| Product Series | AEROSIL Hydrophobic Fumed Silica |
| Product Type | Hydrophobic Fumed Silica (White Carbon Black) |
| Surface Treatment | Polydimethylsiloxane |
| BET Surface Area | 100±25 m²/g |
| Average Primary Particle Size | 14 nm |
| Bulk Density | approx. 50 g/L |
| Carbon Content | 3.5–5.0 wt% |
| Moisture Content | ≤0.5 wt% |
| Loss on Ignition | 4.0–4.6 wt% |
| pH Value | 4.0–6.0 |
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