Fumed Silica EC 300
Physical Properties
EC 300 is hydrophilic fumed silica with a specific surface area of 300m2/g. It is a kind of high purity white colloidal powder.
Properties
» Used as anti-settling, thickening, anti-sagging agent
» Improvement of free flow and anti-caking characteristics of powders
» Rheology and thixotropy control of liquid systems, binders, polymers, etc.
» Reinforcement filler in elastomers
» Excellent transparency in unsaturated polyester resins
Specifications
| Properties | Target Values (Spec Limits) |
| Appearance | White Powder |
| BET specific surface area m2/g | 275-325 |
| Heating Loss at 105 °C 2h wt.% Max | 1.5 |
| Igniting Loss wt.%
(2h at 1000 °C, based on materials dried for 2h at 105 °C) Max |
2.5 |
| 45μm Mesh residue on sieve wt.% Max | 0.05 |
| pH Value in 4% dispersion | 3.6-4.5 |
| SiO2 (based on ignited material) % Min | 99.8 |
| Tamped density (based on material dried for 2h at 105 °C g/L | 40-60 |
| Carbon contend(based on material dried for 2h at 105 °C wt.% Max | 0.2 |
Application
• HTV and RTV silicone rubber
• Adhesives and sealants
• Paints, coatings and pigments
• Printing inks
• Cable compounds
• Unsaturated polyester resins, laminated resins and Gel coat
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