Easy to see during process setup
The material starts magenta and turns translucent after cure, which makes visual confirmation much easier.
FLASHBOND product
UV-8701E
UV cure cationic epoxy, thixotropic
Thixotropic UV epoxy with magenta-to-clear cure indicator
UV-8701E is a thixotropic light cure epoxy that bonds well to a wide range of substrates including engineered plastics such as Ultem, Lexan, and ABS. Magenta when uncured, translucent when cured, providing a built-in cure indicator. Cures under UV (315 to 365 nm) and 405 nm blue light.
In plain English
UV-8701E is a thixotropic epoxy with bead control and a magenta-to-clear cure indicator for visual confirmation.
Product fit
Why buyers choose this grade
More shape control
Its thixotropic profile gives better bead definition than general-purpose flow grades.
High-temperature capability
It keeps the same -55°C to 250°C operating window as the broader high-temperature rigid grades.
Good fit for
- Beads, fillets, and vertical surfaces where a low-viscosity adhesive would slump
- Engineered plastics such as Ultem, Lexan, and ABS along with glass, ceramic, and metal
- Assemblies where a magenta-to-clear cure indicator helps shop-floor confidence
Things to confirm first
- It still needs direct light access to the bond area; there is no shadow-cure thermal backup in this grade.
- If visual appearance must stay water-clear, choose a clear optical grade instead of the magenta indicator system.
Datasheet applications
- Electronics
- Encapsulation
- Sealant
Key features
- RoHS and REACH compliant
- Chemical resistance
- High bond strength
- Built-in cure indicator
Recommended substrates
- Metals
- Ceramics
- Glass
- 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 |
|---|---|
| Appearance | Magenta |
| Viscosity (20 RPM at 25°C) | 5,000 to 9,000 cps |
| Viscosity (2 RPM at 25°C) | 15,000 to 20,000 cps |
| Specific gravity | 1.14 |
Cured material
| Glass transition (Tg) | 135°C |
|---|---|
| Hardness | Shore D 78 |
| Ultimate tensile strength | 5,000 PSI |
| Elongation at break | 6% |
| Operating temperature | -55°C to 250°C |
| Volume resistivity | 1 x 10¹⁴ Ω-cm |
Cure overview
| Wavelength | 365 to 405 nm |
|---|---|
| Intensity | 100 to 200 mW/cm² |
Shelf life and storage
25°C ± 5°C, 1 year from date of manufacture. Material is light sensitive.