Hydrophobic Fumed Silica Powder Used For Coatings and Inks As Stable Thixotropy, Anti-settling, Anti-sagging
Characteristics
HB-620 is a hydrophobic fumed silica after treated with DDS(Dimethyl based on a hydrophilic fume silica with a specific surface area of 170 m2/g. It is a kind of high purity white colloidal powder.
Applications
1, HTV Silicone Rubber
2, Adhesive and Sealants
3, Coatings, Inks.
4, Powder Coatings
Properties
1, Reinforcement of HTV Silicone Rubber, Anti-Caking.
2, Hydrophobic surface chemistry and stable thixotropy, anti-settling, anti-sagging.
3, Good Performance of hydrophobic feature and rheology in Adhensives and Sealants.
4, Improve the free flow, homogeneity and probility stability of Carbon Powder.
Physicochemical Data
| Properties | Unit | Typical Value |
| Specific Surface Area(BET) | M2/g | 170±20 |
| PH-Value in 4% Dispersion(1:1 mixture of water and ethanol) | | 5.5-8.0 |
| Loss on drying(2h@105℃) | Wt% | ≤0.5 |
| Loss on ignition(2h@1000℃,based on material dried for 2h@105℃) | Wt% | ≤4.0 |
| Silica content(Based on ignited material) | Wt% | ≥99.8 |
| Tamped Density(Based on material dried for 2h@105℃) | g/L | 40-60 |
| Carbon Content(Based on material dried for 2h@105105℃) | Wt% | 1.5-2.5 |
