Hydrophobic Fumed Silica HB-139
Fumed Silica
HB-
139
Characteristic
FM-H-B139 is hydrophobic fumed silica which is produced by hydrophilic fumed silica with specific surface area of 200m²/g after chemical post-treatment with PDMS (Polydimethylsiloxane).
|
Applications |
Properties |
|
● silicone rubber |
● Good thickening and thixotropic property |
|
● Coating & printing ink |
● Good anti-sagging properties and excellent stability in epoxy resin |
|
● Adhesives & sealants |
● Excellent reinforcing properties in silicone rubber especially at high filler loading levels and no crepe hardening on aging |
|
● Greased & cable gel |
|
|
● Unsaturated resin |
● Well suited for transparent systems |
|
● Powders coating |
● High hydrophobicity,free flow aid for powder coatings |
Physical and Chemical Data (Standard: GB/T 20020)
|
Test Item |
Unit |
Typical Value |
|
Specific Surface Area(BET) |
m²/g |
110±30 |
|
Carbon Content(Based on material dried at 105℃ for 2 hours) |
% |
4.0～7.0 |
|
pH value in 4% dispersion |
-- |
4.0～7.0 |
|
Loss on drying( 2 hours at 105℃) |
% |
≤ 0.7 |
|
Loss on ignition (2 hours at 1000℃, based on material dried for 2 hours at 105℃) |
% |
≤ 10.0 |
|
Tamped Density (Based on material dried at 105℃ for 2 hours) |
g/L |
40～60 |
|
Silica Content (Based on ignited material) |
% |
≥ 99.8 |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.