Industrial Grade Hydrophobic Silicon Dioxide Fumed Silica CAS 7631-86-9 For Adhesive
Industrial Grade Hydrophobic Silicon Dioxide Fumed Silica CAS 7631-86-9 For Adhesive
Silicon Dioxide Fumed Silica Properties
·Thixotropy and reinforcement in RTV silicone sealants, the hydrophobic feature gives RTV silicone
sealants a long shelf-life.
·Rheology control in adhesives
·Anti-settling, anti-sagging and thixotropy control
·Free flow aid and anti-caking aid for powders
Physical & Chemical Data
| Properties | Unit | Standard Value | Testing Method |
|
pH in 4% dispersion (H2O:Ethanol=1:1) |
3.7~4.5 | GB/T 20020 | |
|
Loss on drying (2 hour at 105℃) |
% | ≤0.7 | GB/T 20020 |
|
Loss on ignition (2 hour at 1000° based on material dried for 2 hours at 105℃) |
% | ≤2.5 | GB/T 20020 |
|
Silica content ( based on ignited material) |
% | ≥99.8 | GB/T 20020 |
|
Tamped density (based on material dried for 2 hours at 105℃) |
g/dm² | 40-60 | GB/T 20020 |
|
Carbon content(based on material dried for 2 hours at 105℃) |
% | 0.6~1.2 | GB/T 20020 |
Silicon Dioxide Fumed Silica Applications
Silicone rubber
Adhesives and Sealants
Defoamer
Toner
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