CAB-O-SIL® TS-720 Fumed Silica
CAB-O-SIL TS-720 10kg bag. Color: white.
For a quote, please contact us.
Warehouse: Portugal
Characteristic
Adding:
– for epoxy resins: 0.5-3.0 % by weight
– for vinyl ester resins: 0,5-2,0 wt.-%
Major Applications and Performance Features:
Typical Applications CAB-O-SIL TS-720 fumed silica is used for rheology control in a wide variety of adhesives, composite and coatings applications:
Epoxy Adhesives and Coatings:
In epoxy adhesives and coatings, CAB-O-SIL TS-720 fumed silica provides good thickening efficiency, sag resistance (or film build) and
anti-settling of pigments and fillers. For applications requiring storage stability, CAB-O-SIL TS-720 fumed silica is recommended.
Polyurethane Adhesives and Coatings:
In polyurethane adhesives and coatings, CAB-O-SIL TS-720 fumed silica provides the same efficient, stable rheology control as in epoxy systems. In addition, the hydrophobic surface of CAB-O-SIL TS-720 fumed silica introduces very little moisture into these systems preventing
premature cross-linking of moisture cured systems.
Vinyl Ester Laminating Resins and Gel Coats:
While untreated silicas are effective thickeners of unsaturated polyester resins, CAB-O-SIL
TS-720 fumed silica is a more efficient, stable rheology control additive for higher polarity systems like vinyl ester laminating resins and gel coats.
CAB-O-SIL TS-720 fumed silica is a medium surface area fumed silica which has been surface treated with polydimethylsiloxane (PDMS). This surface treatment results in a hydrophobic silica with a very different performance than untreated silica
CAB-O-SIL TS-720 Treated Silica
In comparison to an untreated silica such as CAB-O-SIL M-5 fumed silica and other treated silicas such as CAB-O-SIL TS-610 and CAB-O-SIL TS-530 fumed silicas, CAB-O-SIL TS-720 fumed silica provides very different performance in polar systems. The sag resistance as measured by onset of flow of CAB-O-SIL TS-720 fumed silica exceeds that of CAB-O-SIL M-5 fumed silica and even the other treated silicas tested. After aging at 60°C for 28 days, the epoxy resin containing CAB-O-SIL TS-720 fumedsilica maintained sag resistance (onset of flow) unlike the other silicas.