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AEROSIL® R 202 VV 90 is a hydrophobic fumed silica after treated with polydimethylsiloxane. Used in adhesives and sealants.
Details
CAS
67762-90-7
Recommended for
Applications
Producer
Supplier
Chemical Composition
Hydrophobic Fumed Silica
Advantages
- Thickening and thixotropy of complex polar liquids based on epoxy, polyurethane, or vinylester resins
- Thickening and thixotropy of cable gels for fiber optic cables
- anti-settling properties for heavy fillers
- improved wet-in behaviour compared to Aerosil® R 202
Other Applications
adhesives and sealants
epoxy-, vinylester resins and gelcoats
cable gels
Storage
We recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances.Aerosil® R 202 VV 90 should be used within 2 years after production.
Technical data
| Quantity | Value | Unit | Comment |
|---|---|---|---|
| Physical Properties | |||
| Particle size | 14 | nm | Average |
| Humidity | <0.5 | % | |
| Tap density | 0.09 | g/cm3 | |
| Surface Area | 80 - 120 | m²/g | BET |
| SiO2 | >99 | % | based on ignited material |
| pH | 4 - 6 | in 4% dispersion | |
| Thermal Properties | |||
| Loss on ignition | 4 - 6 | % | |
| Chemical Properties | |||
| Carbon percentage | 3.5 - 5 | % | |
| Loss on drying | <0.5 | % | 2hours at 105°C |