Part #: 24W280

AEROSIL® R 208 Hydrophobic Fumed Silica

Evonik Industries, one of the world's leading specialty chemicals companies.

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Part #: 24W280
AEROSIL® R 208 Hydrophobic Fumed Silica

Evonik Industries, one of the world's leading specialty chemicals companies.

AEROSIL® R 208 is a hydrophobic fumed silica aftertreated with polydimethylsiloxane with excellent thickening properties.
Available in 22 lb./10 kg Bags (18 bags per pallet - 397 lb./180 kg). Priced per lb.
Product Specifications
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  • Bag Pack: 22 lbs. / 10 kg
  • Pallet Pack: 397 lbs. / 180 kg (18 Bags)

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Specifications

AEROSIL® R 208 Hydrophobic Fumed Silica

AEROSIL® R 208 is a fumed silica aftertreated with polydimethylsiloxane with excellent thickening properties.

Properties:
  • The silicone oil treatment guarantees the very marked hydrophobia of the product
  • Very efficient effect in the thickening and thixotropy of complex polar liquids, such as those based on epoxy, polyurethane, or vinylester resins
  • Improves the water resistance of moisture-sensitive formulations, such as cosmetic preparations
  • Improvement of the anti-settling behavior of pigments and anti-sagging behavior in 2-C epoxy coatings.
  • With silicone oil treatment, AEROSIL® R 208 offers a tailor-made chemical surface treatment.
  • Due to its excellent electrical insulating ability and low water absorption, this hydrophobized, small-particle silica easily acquires and conserves electrical charge. It is therefore typically used as a surface additive for toner particles in order to increase charge and improve flowability.
  • The high hydrophobicity of PDMS-treated, small particle AEROSIL® grades makes them particularly effective for achieving a high tribo-charge.
  • At the same time, PDMS-treated, small particle AEROSIL® grades maintain good flowability.
  • The slightly oily effect of the PDMS treatment provides additional benefits in some printing processes.
Applications:
  • Thickening and thixotropy control of adhesives and sealants for fiberoptic cables
  • Thickening and thixotropy control of epoxy and vinylester resins and gelcoats
  • Thickening and thixotropy control of cable gels, lubricants, and cosmetic formulations
  • Booster silica for defoamer formulations
  • Anti-sedimentation aid for fillers, such as chalk or quartz powder
  • Additive for formulation of anti-corrosion systems
  • Improves flowability of powders
  • Enables achieving of a high tribo-charge

Additional Information

Bag Pack 22 lbs. / 10 kg
Pallet Pack 397 lbs. / 180 kg (18 Bags)
Series AEROSIL®
Principal Evonik Industries
Function Fumed Silica
Industries Coatings
Note: Available in 22 lb./10 kg Bags (18 bags per pallet - 397 lb./180 kg). Priced per lb.
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