Hydrophobic Fumed Silica Powder HS Code: 281122 Used For Adhesives of Rheology Control
Introductions
The Hydrophobic fumed silica HB-151 is a synthetic amorphous, non-crystalline silica. It is odorless, chemically inert and has no adverse health or environmental effects when used as recommend.
Characters
1, Treated with a reactive silane to give water repellent characteristics
2, Useful for thickening polar solvents and resins like alcohols, isocyanates, epoxies and urethanes
3, Useful for reinforcing silicones without thickening.
Chemical Parameters
| Property | Unit | Typical Value | Testing Method |
| Specific surface area(BET) | ㎡/g | 115±15 | GB/T20020 |
| PH Value in 4% dispersion | | 3.7-4.5 | GB/T20020 |
| Loss on dying(2h@105C) | Wt% | ≤0.5 | GB/T20020 |
| Loss on ignition(2h@1000C,based on material dried for 2h@105C) | Wt% | ≤2.5 | 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 | 0.6-1.2 | GB/T20020 |
Application:
1, Adhesives – for rheology control
2, Caulks and sealants – for rheology con- trol and reinforcement
3, Composites – for rheology control
4, Elastomers – for reinforcement
5, Personal care – for free flow in powders, rheology control in pastes and liquids and reinforcement
