Category: Surface Coats
Ratio: 100pbw to 30pbw
Hardener: 302
Description: HTR-212 w/302 s an unfilled clear epoxy room temperature curing surface coat system used for medium temperature and from temperature applications. HTR-212 w/302 is a tough, strong resin with good chemical resistance and excellent for clear surface coat on carbon graphite parts that are vacuum bag.
Ratio By Weight: 100pbw to 30pbw
Ratio by Volume: 2.8 to 1
Pot Life at 72° F (200 Gram Mass): 15-20 minutes
Cure Time: 12-24 hours
Shore “D” Room Temperature: 82
Heat Distortion: 300°F
Density Resin: 9.7
Density Hardener: 8.1
Density Mixed: 9.3
Shelf Life: 1 year
| A | B | C | D | E | |
| Ratio By Weight: | 100pbw to 40pbw | 100pbw to 50bpw | 100pbw to 60pbw | 100pbw to 82 pbw | 100pbw to 100pbw |
| Ratio by Volume: | 2-1 | 1.6-1 | 1.4-1 | 1-1 | 82-1 |
| Pot Life at 72° F (200 Gram Mass): | 135 | ||||
| Hardness Shore “D”: | 85 | 83 | 81 | 77 | 55 |
| Water Absorption (4): | .19 | .21 | .29 | .54 | 1.10 |
| Weight Loss (3): | .53 | .64 | .72 | .81 | 1.73 |
| Electrical Properties: Dielectric Constant (5): | 3.57 | 3.57 | 3.58 | 3.62 | 3.71 |
| Electrical Properties: Dissipation Factor (5): | .020 | .021 | .032 | .037 | .041 |
| Volume Resistivitty, OHM CM @ 25°C: | 1.0 (1016) | 9.0 (1016) | 10(1014) | 8.2 (1013) | 1.1 (1013) |
| Izod Impact, Ft-Lb_Inch Notch: | .46 | .55 | .84 | 1.02 | 2.08 |
| Tensile Elongation at Break, %: | 6 | 6.4 | 6.9 | 16 | 79 |
| Tensile Strength, PSI: | 8,600 | 8,300 | 7,600 | 5,250 | 1,850 |
| Heat Deflection Temperature, °C: | 70 | 67 | 61 | 42 | 14 |
| Density Resin: | 9.65 | 9.65 | 9.65 | 9.65 | 9.65 |
| Density Hardener: | 7.87 | 7.87 | 7.87 | 7.87 | 7.87 |
| Density Mixed: | 9.14 | 9.06 | 8.89 | 8.85 | 8.76 |
| Specific Gravity Resin: | 1.17 | 9.06 | 8.89 | 8.85 | 8.76 |
| Specific Gravity Hardener: | .94 | 9.06 | 8.89 | 8.89 | 8.76 |