Hydrophobic Fumed Silica HB-151
Fumed Silica
HB-
151
Characteristic
FM-H-B151 is hydrophobic fumed silica which is produced by hydrophilic fumed silica with specific surface area of 150m²/g after chemica post-treatment with DDS (Dimethyldichlorosilane).
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Applications |
Properties |
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● RTV silicone rubber, especially RTV-T |
● Thixotropy and reinforcement in RTV silicone sealants,the hydrophobic feature gives RTV silicone sealants a long shelf-life |
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● Adhesives & sealants |
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● Coating & printing ink |
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● Powder coating |
● Rheology control in adhesives |
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● Anti-settling,anti-sagging and thixotropy control |
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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 |
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Specific Surface Area(BET) |
m²/g |
120±30 |
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Carbon Content(Based on material dried at 105℃ for 2 hours) |
% |
0.6～1.2 |
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pH value in 4% dispersion |
-- |
≥ 3.7 |
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Loss on drying( 2 hours at 105℃) |
% |
≤ 0.7 |
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Loss on ignition (2 hours at 1000℃, based on material dried for 2 hours at 105℃) |
% |
≤ 2.5 |
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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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