Description
Product information
GS-939 is a hydrophobic fumed silica prepared by treating hydrophilic fumed silica with PDMS (polydimethylsiloxane). Its specific surface area is about 110m²/g.
Product performance
- Control rheology and thixotropy
- Reinforcement of silicone elastomers
- Improve free flow
- Anti-sagging and anti-settlement
- Thickener
Physical data
| Physical and chemical properties | unit | value |
| Specific surface area | m²/g | 110±20 |
| pH (4% suspension) | – | 4.5-6.0 |
| Drying reduction (105°C, 2h) | wt.% | ≤0.5 |
| Reduction of burning (1000°C, 2h) | wt.% | ≤7.0 |
| SiO2 content | wt.% | ≥99.8 |
| Bulk density | g/l | 50 |
Applications
- Silicone rubber
- Adhesive and sealant
- Beauty grout
- Copy toner
Packaging
- pallet with paper bag:10 kg /bag
