Hydrophobic Fumed Silica HB-615
Fumed Silica
HB-
615
Characteristic
FM-H-B615 is hydrophobic fumed silica which is produced by hydrophilic fumed silica with specific
surface area of 150m²/g after chemical post-treatment with HMDS (Hexamethyldisilazane).
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Applications |
Properties |
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● Elastomers,HTV & RTV silicone rubber,LSR |
● Reinforcing filler for elastomer,adhesives & sealants |
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● Coatings & Printing Ink |
● High hydrophobicity and stable thixotropy |
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● Adhesives & sealants |
● Anti-settling and anti-sagging and agent in coatings and printing ink |
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● Toners |
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● Powder Coatings |
● Improving dispersion and stability of pigment |
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● Rheological control for adhesives & sealants |
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● Free flow aid and anti-caking aid for powders |
Physical and Chemical Data (Standard :GB/T 20020)
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Test Item |
Unit |
Typical Value |
|
Specific Surface Area(BET) |
m²/g |
140±20 |
|
Carbon Content(Based on material dried at 105℃ for 2 hours) |
% |
1.0～1.7 |
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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℃) |
% |
≤ 4.0 |
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Tamped Density (Based on material dried at 105℃ for 2 hours) |
g/L |
40～60 |
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Silica Content (Based on ignited material) |
% |
≥ 99.8 |
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