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AEROSIL® R 974

AEROSIL® R 974 is a hydrophobic fumed silica aftertreated with DDS (Dimethyldichlorosilane) based on a hydrophilic fumed silica with a specific surface area of 200 m2/g.

Additional information

Supplier

Additive Classification

Fumed Silica
Industry

Adhesives, Automotive & Transportation, Electrical & Electronics, Marine Vessels, Paints & Coatings
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Applications

  • Silicone rubber and silicone sealants
  • Paints and coatings
  • Negative toner
  • Adhesives
  • Coating polymers
  • Cosmetics

Properties

  • Hydrophobic component for thickening and reinforcement of RTV-1 pack silicone sealants
  • Improves shelf-life of silicone sealants
  • Water resistant, for thickening and hydrophobising of liquid systems
  • Rheology control of (complex) liquid systems
  • For use in coatings as anti-settling agent, for pigment stabilization and improvement of corrosion protection
  • Improves hydrophobicity and rheology of offset printing inks
  • Improvement and maintenance of free flow and anticaking characteristics of powders
  • Due to large surface area improved thickening and thixotropic effect as well as transparency

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Molecular Weight：242.2
Concentration：3.20-3.37%
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Brand:Polylite
Appearance:Light yellow transparent viscous liquid
Acid Value:14-22 mg KOH/g
Viscosity, 25℃:1.6-2.3 Pa.s
Solid Content:70-76 %
Gel Time, 25℃:8.5-10.5 min
Thermal Stability, 80℃:≥24h

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