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Haprez™ 3749 is our best high temperature laminating system.
- A high performance, heat cure laminating system that is specifically formulated for use up to 350º F.
- Ideal for oven cure, vacuum bag, or pressure cure processing.
- Provides excellent wetting characteristics on fiberglass cloth, and its smooth handling and spreading quality make it quick and easy to use. Its low viscosity characteristics also enables hand application by brush, roller, squeegee, or conventional internal mix spraying equipment.
- Non-settling during storage and use, to yield completely uniform results with every use. It is also non-sagging to insure that the glass stays in place during fabrication and curing, and its long pot life characteristic enables continuous laminating to any desired thickness.
Typical Properties
| Color |
Grey |
| Mixed Viscosity @ 25˚C |
3,800 cps |
| Specific Gravity |
1.3 |
| Pot Life @ 25˚C (100 gram mass) |
60-90 min. |
| Hardness @ 25˚C |
87 Shore D |
Tensile Strength (12 ply) |
55,000 psi |
Flexural Strength (12 ply) |
80,000 psi |
Service Temperature |
350˚F |
| Izod Impact |
0.47 ft. lbs./in. |
| Cure Schedule |
4-6 hrs. @ 125-150˚F plus |
| Cure Schedule |
4-6 hrs. @ 225-250˚F plus |
| Mix Ratio By Weight- Part A: Part B |
100:21 |
Haprez™ Mix Ratio Chart |
