R-908SC-HT - High Temp. Face Coat
High Temperature Epoxy Face Coat - Rhino R-908SC-HT (black) high temperature face coat is a Bis-F Novolac, high functionality epoxy resin. Designed for ambient cures and high temperature applications, 908SC brushes on easily to intricate mold and pattern shapes without sagging or draining. Rhino 908SC-HT’s surface is impact resistant and may be sanded or polished. Rhino R-908SC-HT is solvent-free, 100% solids, and DOT non-regulated.
Suggested Uses
Epoxy face coatings on intricate patterns and molds. Ambient cures with H-3102 and 3136-R1 hardeners. High temperature applications (275°F – 350°F) with H-3137 hardener.
Properties of Rhino R-908SC-HT with Resin
| Viscosity: | Thixotropic |
| Weight/gal: | 12.0 - 12.2 lbs per gallon |
| Color: | Black |
Mixing
Use and store between 65° – 80°F. Surfaces must be free of contaminants such as dirt, oil, grease, or water. Wax or “release” mold surfaces before epoxy application. Mix Rhino 908SC with any listed hardener at 100:12 by weight. Recommend mixing smaller batches H-3102 due to its brief pot-life.
Curing
Allow applied 908SC to cure past the tacky stage (see thin film set time), then immediately apply backup laminates. Once laminate schedule is completed, cure the structure at ambient temperature (65° – 80°F) overnight. Then postcure at 130°F for 4 hours followed by a ramping schedule that increases temperature in 50°F increments for 1 hour to the intended service temperature or the limits of the backup laminate’s HDT.
Physical Properties of Rhino R-908SC-HT with Rhino Hardeners
| Rhino R-908SC-HT | w/ Rhino 3102 | w/ Rhino 3136-R1 | w/ Rhino 3137 |
| Mix Ratio, PHR, (WT): | 100:12 | 100:20 | 100:12 |
| Gel Time, Minutes, 77°F: | 15 | 30 | 40 |
| Thin Film Set Time, Hrs, 77°F: | 2 | 2.5 | 4 |
| Cure Temperatures, °F: | 77/130/180/225 | 77/130/180/225/285 | 77/130/180/225/275/325 |
| HDT F, Ambient Cure: | 175 | 195 | - |
| HDT F, Post-cure: | 225 | 280 | 350 |
How Supplied
FOB Rhino Linings San Diego, CA or authorized distributors. R-908SC: 10lb Gallons, 50lb Pails and 500lb specialorder drums. H-3102, 3136-R1, and 3137: 2lb Quarts, 8lb Gallons and 40lb Pails.
