EPOCAST 50-A1/946
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- Short 20-Minute Gel Time
- Solvent-Free Composite Laminating
- High-Strength Cured Laminate
Product Description
EPOCAST 50-A1 Resin / Hardener 946 Epoxy Laminating System is an unfilled, solvent-free two-component epoxy for composite structure manufacture, repair, and filament winding. The amber system mixes at 100:15 by weight and has a 20-minute gel time at 25 deg C, providing the shorter work-life option in the 50-A1 series. It can be cured for five days at 25 deg C or heat-cured for two hours at 77 to 93 deg C after room-temperature gel. Typical cured glass-laminate data include compressive strength above 46 ksi and self-extinguishing behavior.
Key features
- Short working window: The mixed system has a 20-minute gel time at 25 deg C.
- Solvent-free laminating system: The unfilled epoxy is used for composite manufacture, repair, and filament winding.
- Cured laminate strength: Typical compressive strength exceeds 46 ksi across the reported cure conditions.
Applications
- Composite structure manufacture
- Composite repair
- Filament winding
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical as-received values distinguish the resin, hardener, and mixed system.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | 50-A1 resin amber; 946 hardener straw; mixed system amber | - | Visual |
| Density | 50-A1 1.21; 946 1.05; mixed 1.18 | g/cm^3 | ASTM D792 |
| Viscosity | 50-A1 7,770; 946 400; mixed 2,400 | cP | At 25 deg C; ASTM D2196 |
| Mix ratio by weight | 100:15 | - | 50-A1 resin:Hardener 946 |
| Gel time | 20 | min | 100 g mass at 25 deg C; ASTM D2471 |
| Shelf life | 12 | months | Components unopened at 25 deg C |
After-processing / final-state properties
Typical cured laminate properties vary with the stated cure schedule.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Cure schedule | 5 days at 25 deg C; or 2 h at 77 to 93 deg C after room-temperature gel | - | Typical cure options |
| Handling and machining | 8 to 16 | h | At room temperature |
| Compressive strength | 46.03; 50.58; 48.30 | ksi | 7 days at 25 deg C; 27 days at 25 deg C; 1 day at 25 deg C plus 2 h at 66 deg C; ASTM D695 |
| Compressive modulus | 4.04; 3.43; 3.66 | Msi | Same cure sequence as compressive strength; ASTM D695 |
| Self-extinguishing time | 0 | s | 60-second vertical test; 7-day and heat-cured specimens |
| Burn length | < 6 (< 15) | in (cm) | FAR 25.853A; 60-second vertical test |
