Fumed Silica (Pyrogenic silica)
Description: Hydrophilic fumed silica with surface area of 150-380 m2/g .The original particle size can be 7-40 nm. It’s a kind of high purity white colloidal powder.
Specification:
| Type |
N15 |
N20 |
N30 |
N38 |
| Specific surface area (BET), m2/g |
150±15 |
200±20 |
300±25 |
380±30 |
| PH value in 4% dispersion |
3.6-4.5 |
| Loss on drying (2h, 105°C) |
1.5% max. |
| Loss on ignition (2h, 1000°C) |
2.5% max. |
| Sieve residue |
0.05% max. |
| Bulk density |
25-60 g/L |
| SiO2 content |
99.8% min. |
| Carbon content |
0.2% max. |
Packing: net 10 kg bag
Applications:
- Paints, Coatings, Printing inks and Unsaturated polyester resins
- Sealants and Silicone Adhesive
- Elastomers, especially HTV and RTV Silicone rubber
- Films, Cosmetics and Heat insulator
Properties:
- Reinforcing filler in elastomers
- Rheology and thixotropy control of liquid systems
- Used as anti-settling, thickening, anti-sagging agent
- Improvement of free flow and anti-caking characteristics of powders
- High transparency
