Hydrophobic
KemituraSil® – Fumed Silica
Treated, hydrophobic
Types: AM-1-120 AM-1-175
Charakteristic
KemituraSil® hydrophobic fumed Silica is treated with silanes or siloxanes
Applications
• Vinyl ester resin-based composites
• Epoxy resin-based composites
• PU resin based liquids
• Paints & Coatings
• Adhesives
• Silicone rubber and sealants
• Cable compounds
• Printing inks
Property
Tixening and Tixotropy, anti-settling, anti-sag, moisture barrier, reiforcing,water resistance,free flow,anti cakings, hydrofobicity.
Along with the traditional application areas (e.g. polyester, silicone, paints and coatings), hydrophobic KemituraSil® products are used with increasing success in high technology fields.
KemituraSil® – Fumed Silica
Treated, hydrophobic
Types: AM-2-120
KemituraSil® AM-2-120 is a medium surface area fumed silica which has been surface treated with polydimethylsiloxane. This surface treatment results in a highly hydrophobic silica with very different performance than untreated silica.
Applications
• Thickening efficiency
• Stable rheological performance over time
• Sag resistance
• Anti-settling of pigments and fillers
• Shear-thinning rheological behaviour
KemituraSil® AM-2-120 is used for rheology control in a wide variety of adhesives, composite and coatings applications:
Epoxy Adhesives and Coatings:
In epoxy adhesives and coatings, KemituraSil® AM-2-120 provides good thickening efficiency, sag resistance (or film build) and anti-settling of pigments and fillers. For applications requiring storage stability of KemituraSil® AM-2-120 is recommended.
Polyurethane Adhesives and Coatings:
In polyurethane adhesives and coatings, KemituraSil® AM-2-120 provides the same efficient, stable rheology control as in epoxy systems. In addition, the hydrophobic surface of KemituraSil® AM-2-120 introduces very little moisture into these systems preventing premature cross-linking of moisture cured systems.
Vinyl Ester Laminating Resins and Gel Coats:
While untreated silica are effective thickeners of unsaturated polyester resins, KemituraSil® AM-2-120 is a more efficient, stable rheology control additive for higher polarity systems like vinyl ester laminating resins and gel coats.