Silica for Adhesives and Sealants
◆Description of products
Hydrophobic fumed silica is made by hydrolyzing exertion chloroethane in oxy-hydrogen flame. From 2008 year till now, we began to produce fumed silica; the annual sales reached 1500 tons. Main used in paint and coating, as additive agent used to prevent subside, thickening, thixotropic agent and prevent sagging in liquid system. There is an effective changing in the aspect of liquid viscosity.
◆Application Scopes
◆The specification, feature and application
Properties (GS-150) |
Unit |
Typical Value |
Testing Method |
Specific Surface Area(BET) |
m2/g |
150±15 |
GB/T 20020 |
PH value in 4% dispersion |
3.9~4.5 |
GB/T 20020 |
|
Loss on drying(2 hours at 105℃) |
wt% |
≤1.5 |
GB/T 20020 |
Loss on ignition(2 hours at 1000℃ based on material dried for 2 hours at 105℃) |
wt% |
≤2.0 |
GB/T 20020 |
Sieve Residue(45μm) |
wt% |
≤0.04 |
GB/T 20020 |
Silica Content(Based on ignited material) |
wt% |
≥99.8 |
GB/T 20020 |
Tamped Density(Based on material dried at 105℃ for 2 hours) |
g/L |
40~60 |
GB/T 20020 |