More time to place parts
It gives operators about 45 to 60 seconds of open time for alignment after pre-activation.
FLASHBOND product
UV-2910DC
UV/LED cure dual-cure cationic epoxy
Lower-viscosity dual-cure UV epoxy for fixturing and assembly
UV-2910DC is a dual-cure light cure epoxy. UV pre-activation gives a 45 to 60 second open time for part placement; final cure follows at room temperature or accelerates with mild heat (30 minutes at 60°C). Low shrinkage and outgassing make it suited to bonding optics, fibers, lenses, prisms, connectors, and electronic components.
In plain English
UV-2910DC provides about one minute of post-exposure placement time for optics, connectors, and small electronic parts.
Product fit
Why buyers choose this grade
Cleaner for sensitive builds
Low shrinkage and low outgassing help when movement, fogging, or contamination are a concern.
Flexible final cure
You can let it finish at room temperature or accelerate the cure with 30 minutes at 60°C.
Good fit for
- Optics, prisms, lenses, and fibers that need placement time after light exposure
- Connector and small-part assembly where low shrinkage and low outgassing matter
- Processes that can finish cure at room temperature or speed it up with mild heat
Things to confirm first
- Plan for a secondary cure stage after assembly; UV light alone is the fixture step, not the whole story.
- The lower-viscosity flow is useful for wetting, but it needs a joint that can physically hold the adhesive in place.
Datasheet applications
- Optics bonding
- Connectors
- Fiber and lens bonding
- Electronic components
Key features
- Open-time pre-activation
- Low shrinkage
- Low outgassing
- Heat-accelerated final cure
Recommended substrates
- Glass
- Metals
- Ceramics
- Engineered plastics
Packaging
- Syringes
- Bulk
Technical data
Material profile at a glance.
Typical values for reference only. Use these material, cured-state, and cure-window values to compare fit before confirming specifications.
Uncured material
| Chemical class | Cationic epoxy |
|---|---|
| Viscosity at 25°C | 2,500 to 5,000 cps |
| Specific gravity | 1.12 |
Cured material
| Color | Translucent |
|---|---|
| Hardness | Shore D 75 |
| Glass transition (Tg) | 45°C |
| Linear shrinkage | 0.8% |
| Tensile strength | 3,000 PSI |
| Lap shear (Al/Al) | 2,500 PSI |
| Elongation at break | 7.6% |
| Water absorption (24 hr) | 0.15% |
| Service temperature | -55°C to 150°C |
| Dielectric strength | 420 V/mil |
| Volume resistivity | 1.0 x 10¹⁴ Ω-cm |
Cure overview
| Pre-activation | 100 to 150 mW/cm² at 365 or 405 nm, 6 to 8 s |
|---|---|
| Open time | 45 to 60 seconds |
| Full cure (after assembly) | 24 hours at 25°C, or 30 minutes at 60°C |
| Direct full cure option | 20 to 30 s, or 250 mW/cm² for 10 s |
Shelf life and storage
Optimal storage 10°C to 25°C in unopened container. Keep away from light. Storage outside 10°C to 28°C can affect properties.