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