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HJSIL® R6200 Hydrophobic fumed silica
HJSIL® R6200 Hydrophobic fumed silica
HJSIL® R6200 Hydrophobic fumed silica
HJSIL® R6200 is a kind of hydrophobic fumed silica, treated with HMDS (hexamethyldisila- zane). It’s high purity white colloidal powder.
1.Low thickening effect and excellent processability enable high loading levels of polymer systems
2.Excellent reinforcing properties in silicone rubber applications at high filler loading levels(e.g. self-levelling RTV-1, RTV-2,LSR)
3.Well suited for transparent systems
4.Free-flow aid for powders
CHARACTERISTIC
TECHNICAL DATA
APPLICATIONS
PACKAGING
CHARACTERISTIC
HJSIL® R6200 is a kind of hydrophobic fumed silica, treated with HMDS (hexamethyldisila- zane). It’s high purity white colloidal powder.
TECHNICAL DATA
Properties and test methods Unit Typical value Standardization
Specific surface area (BET) m2/g 160±20 GB/T20020
pH value
(in 4% dispersion)
  6.5 ~ 8.0 GB/T20020
Loss on drying
(2 hours at 105 °C)
Wt% ≤ 0.5 GB/T20020
Loss on ignition
(2 hours at 1000 °C,
based on material dried for 2 hours at 105 °C)
 Wt%  ≤ 2.5 GB/T20020
Silica content
(based on ignited material)
Wt% ≥ 99.8 GB/T20020
Tamped density
(based on material dried for 2 hours at 105 °C)
g/L 40 ~ 60 GB/T20020
Carbon content
(based on material dried for 2 hours at 105 °C)
Wt% 3.0~ 4.5 GB/T20020
APPLICATIONS
● Silicone rubber
● Adhesives and Sealants
● Defoamers
● Toner
PACKAGING
HJSIL® R6200 is supplied in 10kg kraft paper bags. We recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances.
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