Hydrophobic Fumed Silica HB-612
Fumed Silica
HB-
612
Characteristic
FM-H-B612 is hydrophobic fumed silica which produced by hydrophilic fumed silica with specific surface
Area of 150m²/g after chemical post-treatment with HMDS (Hexamethyldisilazane)
|
Applications |
Properties |
|
● RTV silicone rubber |
● Rheological control of RTV silicone rubber |
|
● Adhesives & sealants |
● Anti-settling,anti-sagging and thixotropy agent |
|
● Coatings & Printing Ink |
● Free flow aid and anti-caking aid for powders |
|
● Powder Coating |
● Thixotropy agent & reinforce filler for RTV silicone sealants, the hydrophobic feature enables RTV silicone sealants a long guarantee time |
Physical and Chemical Data (Standard: GB/T 20020)
|
Test Item |
Unit |
Typical Value |
|
Specific Surface Area(BET) |
m²/g |
140±20 |
|
Carbon Content(Based on material dried at 105℃ for 2 hours) |
% |
0.7～1.3 |
|
pH value in 4% dispersion |
-- |
5.0～8.0 |
|
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℃) |
% |
≤ 2.0 |
|
Tamped Density (Based on material dried at 105℃ for 2 hours) |
g/L |
40～60 |
|
Silica Content (Based on ignited material) |
% |
≥ 99.8 |
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