Good Thickening Thixotropy Hydrophobic Fumed Silica Equivalent To R202 Used For Adhesives and Sealants
Introduction
HB-139 is a structure modified hydrophobic fumed silica
Application
Silicone Rubber
Coatings and Inks
Adhesives and Sealants
Greases and cable gel
Vinyl Ester Resins
Powders
Properties
1, It have good thickening thixotropy
2, Good antisage properties and excellent stability in epoxies.
3, Excellent resinforcing properties in silicone rubber applications especially at high filler loading levels and no crepe hardening on aging in silicone rubber.
4, Well suited for transparent systems.
5, High Water Resistance and Free- Flow aid for powders.
Physical and Chemical Data
| Property | Unit | Typical Value |
| Specific Surface area(BET) | m2/g | 110±15 |
| PH- Value in 4% Dispersion | 5.5-7.5 | |
Moisture(2 hours at 105℃) | wt% | ≤1.5 |
| Loss on ignition( 2 h@1000℃,based on material dried for 2h@105℃) | Wt% | ≤10 |
| Sio2 Content(Based on ignited material) | wt% | ≥99.8 |
| Carbon content(based on material dried for 2h @105℃) | Wt% | 4.5-6.5 |