| Product highlights: CAB-O-SIL ULTRABOND fumed silica is our highest performing surface treated fumed silica. Compared to other polydimethylsiloxane (PDMS) treated silicas, CAB-O-SIL ULTRABOND fumed silica improves adhesives systems by reducing the viscosity in the application without compromising sag resistance. CAB-O-SIL ULTRABOND fumed silica is best suited for epoxy adhesives with loading levels greater than 5% and those that require high sag resistance and excellent storage stability. Key applications: Structural adhesives for epoxy formulations in a wide range of industries: - Automotive
- Aerospace
- Construction
- Electronics
- Flooring
- Wind bonding paste
Performance Features: In epoxy resins, CAB-O-SIL ULTRABOND fumed silica provides excellent sag resistance and storage stability compared to other PDMS treated silicas. Figure 1 shows the sag resistance in epoxy resin, as assessed by a Yield Stress measurement, upon manufacture, and after 28 days of accelerated aging at 60 °C. The epoxy resins containing CAB-O-SIL ULTRABOND fumed silica were shown to provide higher Yield Stress both initially and after aging than epoxies made with competitive PDMS treated silicas.Information provided by Cabot Corporation |
