GENERAL DESCRIPTION: HTR-250 is an unfilled clear epoxy room temperature curing laminating system used in high temperature and room temperature applications. HTR-250 is a tough, strong resin with good heat distortion, chemical resistance and excellent adhesive quality. As with most high temperature systems this will gel overnight to a demoldable state, in some instances tools may be used without post cure. However for most uses at elevated temperature post cure is recommended.
| Ratio by Weight | 100pbw to 24pbw |
| Ratio by Volume | 3.4 to 1 |
| Pot Life at 72ºF (200 Grams Mass) | 1.5 hours |
| Cure Time | 24 hours |
| Shore "D" Room Temperature | 85 |
| Shore "D" at 300ºF | 78 |
| Flexural Strength | 38,500 |
| Flexural Modulus | 1.85 x 106 |
| Compressive Strength | 55,000 |
| Heat Distortion | 375ºF |
| Density Resin | 9.6 |
| Density Hardener | 7.8 |
| Density Mixed | 9.25 |
| Specific Gravity Resin | 1.16 |
| Specific Gravity Hardener | .94 |
| Specific Gravity Mixed | 1.11 |
| Shelf Life Resin/Hardener | 1 year |
HIGH TEMPERATURE CURE CYCLE (With HT-106-3 Hardener):
- 1 hour @ 150ºF
- 1 hour @ 250ºF
- 2 hours @ 350ºF