Aerosil® R 7200

Technical Documents

AEROSIL® R 7200 is a structure-modified fumed silica aftertreated with methacrylsilane to ensure high filler loading. Used in acrylate, methyl acrylate, unsaturated polyester and vinylester adhesives.

Details

CAS

402-78-6 100

Product Type

Additive > Fillers > Silicas
Additive > Rheology modifiers thickeners

Recommended for

Resin > Acrylics & Acrylic Copolymers resin
Resin > Polyesters resin > Unsaturated

Applications

Coatings
Adhesives
Composites
Coatings > Inks

Producer

Evonik

Supplier

Evonik Iran > Silica

Chemical Composition

Hydrophobic fumed silica

Advantages
  • Low thickening effect
  • Possible to incorporate up to 20 weight-% using the usual dispersion technology (such as bead mill)
  • Acts as an active filler in acrylate systems
  • As a filler it can increase the scratch resistance of paint and coating systems (such as UV-curing) and printing inks
  • it improves the mechanical properties, such as the hardness of plastics
  • anti-sagging, thixotropic, anti-settling effects
Other Applications

Methacrylate-functionalized reinforcing additive with cross-linking option for polymers, composite materials, printing inks, and acrylate-based coatings
acrylate, methyl acrylate, unsaturated polyester and vinylester adhesives

Storage

We recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances.Aerosil® R 7200 should be used within 2 years after production.

Technical data

Quantity Value Unit Comment
Physical Properties
Tap density 0.23 g/cm3
Surface Area 125 - 175 m²/g BET
SiO2 >99 % based on ignited material
pH 4 - 6 in 4% dispersion
Chemical Properties
Carbon percentage 4.5 - 6.5 %
Loss on drying <1.5 % 2hours at 105°C