High Purity White Colloidal Hydrophobic Fumed Silica Counter For R812 Used For HTV Silicone Rubber and LSR
Characteristics
HB-630 is a hydrophobic fumed silica after treated with DDS(Dimethyl based on a hydrophilic fume silica with a specific surface area of 260 m2/g. It is a kind of high purity white colloidal powder.
Applications
1, Elastomer, HTV Silicone Rubber and LSR
2, Anti-foamer
3, Coatings, Inks.
4, Carbon Powder for Printer
Properties
1, In HTV and Liquid silicone rubber, provide good reinforcement and transparency.
2, Hydrophobic surface chemistry and stable thixotropy, anti-settling, anti-sagging.
3, High surface area, small particle size and good decentrality, performance high anti-foam property.
4, Improve the free flow, homogeneity and probility stability of Cabon Powder.
Physicochemical Data
| Properties | Unit | Typical Value |
| Specific Surface Area(BET) | M2/g | 260±25 |
| 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% | 2.5-4.0 |
