EPOCAST 1629
Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg
Main features
- 0.48 g/cc Mixed Density
- Slump-Resistant Soft Paste
- Sandable Machinable Cured Finish
Product Description
EPOCAST 1629 A/B is a two-component, ultra-low-density epoxy syntactic for reinforcing and filling honeycomb edges in lightweight aerospace structures. White Part A resin and peach Part B hardener mix at 100:50 by weight to create a light-tan paste with typical density of 0.48 g/cc. A 75 g mass typically gels in 70 minutes at 25 deg C. The formulation resists slumping on vertical surfaces and can be extruded or spread with a putty knife. After cure, it sands and machines readily. Cured properties include flame-retardant, self-extinguishing behavior and typical compressive and aluminum lap-shear performance.
Key features
- Ultra-Low Mixed Density: Typical mixed density is 0.48 g/cc by ASTM D1622 for the light-tan system.
- Slump-Resistant Vertical Handling: The soft paste is suitable for extrusion or putty-knife spreading on vertical surfaces.
- Sandable and Machinable Cure: The cured syntactic sands and machines readily.
Applications
Honeycomb edge reinforcement and filling in lightweight aerospace structures.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Chemical Properties
Additional Information
As-supplied / before-processing properties
Typical Part A, Part B, and mixed-system properties from the exact Huntsman TDS.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | White / peach / light tan | - | Part A / Part B / mixed system; visual |
| Density | 0.52 / 0.42 / 0.48 | g/cc | Part A / Part B / mixed system; ASTM D1622 |
| Viscosity | Paste / paste / paste | - | Part A / Part B / mixed system; 25 deg C; ASTM D2196 |
| Gel time | 70 | minutes | Mixed system; 75 g at 25 deg C; ASTM D2471 |
| Mix ratio | 100:50 | parts by weight | Part A resin:Part B hardener |
| Component shelf life | 6 | months | Sealed original containers under stated storage conditions |
After-processing / final-state properties
Typical cured-system values; cure schedule is 48 hours at 25 deg C or room-temperature gel plus 5 hours at 52 deg C.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Compressive strength | 3.0 | Ksi | At 25 deg C; ASTM D695 |
| Compressive modulus | 200 | Ksi | At 25 deg C; ASTM D695 |
| Tensile lap shear, etched aluminum | 1,100 | psi | At 25 deg C; ASTM D1002 |
| 12-second vertical flammability | Self-extinguishing in 2 | seconds | Typical cured-system result |
| Burn length | 1 | in. | Typical cured-system result |
| Drip extinction time | 0 | seconds | Typical cured-system result |
