Henan Minmetals East New Materials CO. LTD.
Henan Minmetals East New Materials CO. LTD.
Payment Type:L/C,T/T
Incoterm:FOB,CFR,CIF
Min. Order:100 Kilogram
Transportation:Ocean,Land,Air,Express
Port:QINGDAO,SHANGHAI,GUANGZHOU
$10≥100Kilogram
Brand: HJSIL® FUMED SILICA
Place Of Origin: China
Grade: Industrial Grade
Packaging: 10KG
Transportation: Ocean,Land,Air,Express
Supply Ability: 100 MT / MONTH
HS Code: 28112290
Port: QINGDAO,SHANGHAI,GUANGZHOU
Payment Type: L/C,T/T
Incoterm: FOB,CFR,CIF
After hydrophobic modification, the silanol groups on the surface of fumed silica are replaced by organic groups such as methyl groups, which improves the compatibility of the modified fumed silica with the RTV system and makes the hydrophobic fumed silica easy to disperse as the hydrophobicity increases, the transparency of RTV increases slightly. On the other hand, when hydrophobic fumed silica is used as filler, the storage stability of RTV will be greatly improved due to the relatively few surfaces active silanol groups of hydrophobic fumed silica, and its viscosity after 6 months of storage remained almost unchanged.
Physical and chemical data of Aerosil Fumed Silica:
| Properties and test methods | Unit | Typical Value | Standardization |
| Specific surface area (BET) | m2/g | 110 ± 25 | GB/T 20020 |
| pH value (in 4% dispersion) | 5.5 ~ 7.0 | GB/T 20020 | |
| Loss on drying (2 hours at 105 °C) | Wt% | ≤ 1.0 | GB/T 20020 |
| Loss on ignition (2 hours at 1000 °C,based on material dried for 2 hours at 105 °C) | Wt% | ≤ 4.0 | GB/T 20020 |
| Sieve residue (45 μm) | mg/kg | ≤ 250 | GB/T 20020 |
| Silica content (based on ignited material) | Wt% | ≥ 99.8 | GB/T 20020 |
| Tamped density (based on material dried for 2 hours at 105 °C) | g/dm³ | 40 ~ 60 | GB/T 20020 |
| Carbon content (based on material dried for 2 hours at 105 °C) | Wt% | 4.0 ~ 7.0 | GB/T 20020 |
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