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Silica HL215, hydrophobic fumed silica
specific surface area: 150m2/g.
white colloidal powder
high purity: >99.8%
Fumed Silica HB215
Characteristics
HB-215 is hydrophobic fumed silica after treated with DDS (Dimethyldichlorosilane) based on a hydrophilic fumed silica with a specific surface area of 150 m²/g. It’s a kind of high purity white colloidal powder.
Applications:
Paints and coatings
Unsaturated polyester resins, laminated resins and gel coats
Elastomers, especially HTV and RTV Silicone rubber
Adhesives and sealants
Printing inks
Cable compounds
Plant protection
Food and Cosmetics
Properties:
Reinforcement filler in elastomers
Rheology and thixotrophy control of liquid systems, binders, polymers. Etc
Used as anti-settling, thickening, anti-sagging agent
Improvement of free flow and anti-caking characteristics of powders
High transparency
Physicochemical Data:
|
Properties |
Unit |
Typical Value |
Standardization |
|
Specific surface area (BET) |
M²/g |
120 ±15 |
GB/T 10722 |
|
PH-value in 4% dispersion |
% |
3.7----4.5 |
GB/T 1717 |
|
Loss on drying (2h@105°C) |
% |
≤0.5 |
GB/T5211.3 |
|
Loss on ignition(2h @1000 °C,based on material dried for 2h@105°C) |
% |
≤2.5 |
GB/T 20020 |
|
Sieve residue(45 μm) |
% |
≤0.04 |
GB/T 5211.14 |
|
Silica content (based on ignited material) |
% |
≥99.8 |
GB/T 20020 |
|
Tamped density(based on ignited material) |
g/L |
40--60 |
GB/T 5211.4 |
|
Carbon content (based on material dried for 2h @105°C) |
% |
≤0.2 |
GB/T 20020 |
