Hydrophilic Fumed Silica Powder as White Colloidal Used For Paints
Characteristics
Fumed silica is made from flame pyrolysis of silicon tetrachloride or from quartz sand vaporized in a 3000 °C electric arc. It is used in cosmetics for its light-diffusing properties. It is used as a light abrasive, in products like toothpaste. Other uses include filler in silicone elastomer and viscosity adjustment in paints, coatings, printing inks, adhesives and unsaturated polyester resins.
HL-200 is a hydrophilic fumed silica with a specific surface area of 200m2/g. It is a kind of high purity white colloidal powder.
Properties
1, Rheology and thixotropy Control
2, Used as anti-settling, thickening, anti-sagging agent
3, Free Flow and Suspension
4, Reinforcement
5, Adsorbant
6, High transparency
Chemical Data
| Property | Unit | Typical Value | Testing Method |
| Specific surface area(BET) | M2/g | 200±20 | GB/T20020 |
| PH Value in 4% dispersion | | 3.7-4.5 | GB/T20020 |
| Loss on dying(2h@105C) | Wt% | ≤2.0 | GB/T20020 |
| Loss on ignition(2h@1000C,based on material dried for 2h@105C) | Wt% | ≤2.0 | GB/T20020 |
| Sieve residue(45um) | Wt% | ≤0.04 | GB/T20020 |
| Silica content(Based on ignited material) | Wt% | ≥99.8 | GB/T20020 |
| Tamped density(Based on material dried for 2h@105C) | g/L | 40-60 | GB/T20020 |
| Carbon content(Based on material dried for 2h@105C) | g/L | ≤0.15 | GB/T20020 |
Application:
1, RTV Silicone Sealant
2, HTV Silicone Rubber
3, Paints and Coatings, Ink
4, Unsaturated polyester resins
5, Adhesive & Sealant
6, Thermal insulation material
7, Composites& PVC
