Fast wetting in tight spaces
Its 600 to 800 cps viscosity helps it spread and contact surfaces quickly.
FLASHBOND product
UV-8504E
UV cure cationic epoxy
Low-viscosity UV epoxy with high Tg and rigidity
UV-8504E is a low-viscosity, fast-curing light cure epoxy adhesive with strong wetting properties. It cures to a high-Tg rigid polymer for metals, ceramics, and glass under UVA conditions.
In plain English
UV-8504E is a very low-viscosity epoxy that wets quickly and cures into a hard, rigid bond with high glass transition temperature.
Product fit
Why buyers choose this grade
Rigid high-Tg cure
It cures to a high-Tg, rigid polymer rather than a flexible or rubbery bond.
Good for epoxy-style performance
The combination of 125°C Tg, 5,000 PSI tensile strength, and 200°C operating range keeps it in the serious-performance bucket.
Good fit for
- Thin bondlines on metal, ceramic, and glass where fast wetting matters
- Rigid bonds that need higher Tg and strong electrical resistance
- Assemblies using 315 or 365 nm UVA equipment
Things to confirm first
- Because it is a low-viscosity rigid system, it is not meant for impact flexibility or non-sag placement.
- Confirm that the UV source and joint geometry give enough direct exposure for complete cure.
Datasheet applications
- Electronics
- Encapsulation
- Sealant
Key features
- RoHS and REACH compliant
- Chemical resistance
- High bond strength
- Fast UV cure
Recommended substrates
- Metals
- Ceramics
- Glass
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 |
|---|---|
| Appearance | Clear |
| Viscosity (20 RPM at 25°C) | 600 to 800 cps |
| Specific gravity | 1.1 |
Cured material
| Glass transition (Tg) | 125°C |
|---|---|
| Hardness | Shore D 78 |
| Ultimate tensile strength | 5,000 PSI |
| Elongation at break | 8% |
| Operating temperature | -55°C to 200°C |
| Volume resistivity | 1 x 10¹⁴ Ω-cm |
Cure overview
| Wavelength | 315, 365 nm |
|---|---|
| Intensity | 100 to 300 mW/cm² |
Shelf life and storage
18°C ± 10°C, 1 year from DOM. Material is light sensitive.