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Due to its specific properties, AEROSIL® fumed silica performs in a multitude of applications in the adhesives and sealants industry. Both hydrophilic and hydrophobic types of AEROSIL® fumed silica are mainly used as additives for thixotropy, reinforcement, anti-settling, rheology control and anti-sag in reactive, solvent, water-based adhesives and hotmelts.

In sealants, AEROSIL® fumed silica is used especially as rheology control and active reinforcing filler while AEROXIDE® TiO2 P 25 improves the thermal stability. AERODISP® W 7520 is a low viscous, water-based dispersion of AEROSIL® fumed silica which improves shear adhesion and dry film clarity of water-based pressure sensitive adhesives.

AEROSIL® fumed silica offers many technical advantages and effects for adhesive and sealant manufactures:

  • Thickening and thixotropy
  • Reinforcement
  • Anti-settling
  • Yield point
  • Viscosity control
  • Anti-sag
  • Sprayability
  • Bonding strength
  • Hydrophobicity
  • Transparency

Data sheets

Product- as well as safety data sheets (SDS) of our various AEROSIL® fumed silica grades, can be found at our product recommendations