Easily Dispersible Precipitated Silica in silicon rubber products
Type:779
Chemical Properties
Enhanced performance:
White carbon black provides high tensile strength, high tear strength, and good resilience by forming strong physical and chemical interactions with the silicone rubber matrix.
It can effectively improve the wear resistance and compression permanent deformation resistance of silicone rubber.
Improve processing performance:
During the mixing and processing, white carbon black can adjust the viscosity and rheological properties of silicone rubber, making it easier to extrude, mold or inject.
Specifications
| Items | Specification |
| Appearance | White Powder |
| BET specific surface area m²/g | 130-160 |
| Salt As Na2SO4% Max | 0.7 |
| SiO2 % Min | 98 |
| Heating Loss at 105°C 2h% Max | 4.0-8.0 |
| Ignition Loss at 1000°C 2h% Max | 7.0 |
| pH Value (5% aqueous suspension) | 6.0-7.0 |
| DBP absorption Value cm³/g | 2.0-2.7 |
| Total Fe mg/kg Max | 200 |
| Medium Size (D50)µm | 10-14 |
Application
Easily Dispersible Precipitated Silica 779 take better reinforcement effecton high temperaturevulcanized silicone rubber.
It has high transparent,good antiyellowing effect,and good processability properties.
similar name:SiO2, Precipitated Silica, White Carbon, Silicon Dioxide, Conventional Silica Powder, Amorphous Precipitated Silica
| Silica Product List From Ecopower | |||||
| Product Code | Type | SiO2: | Surface Area
(BET) m2/g |
pH value | Application and Property |
| Silicon Silica （For Silicone Rubber ） |
779 | ≥98% | 130-160 | 6-7 | Easily Dispersible silica |
| 779-1 | ≥98% | 150-180 | 6-7 | Refined silica,transparecy ,good reinforcing. | |
| 800 | ≥98% | 150-180 | 6-7 | High anti yellowing silica.transparecy. | |
Packaging And Transportation
1. Package: 10 kg/bag.
2. Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.
3. Shelf life: One year in ventilating, cool and dry area.
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