PERMABOND UV620
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- Optically Clear Glass Bonding
- Yellowing-Resistant Cured Appearance
- Rapid Low-Power Lamp Cure
Product Description
Permabond UV620 is a single-part, optically clear methacrylate adhesive for UV-curing glass, crystal, and decorative assemblies. The colorless liquid has a typical viscosity of 2,200 to 2,900 mPa s at 25 deg C and is formulated to resist yellowing for appearance-sensitive bonds. Typical fixture time is 5 seconds with a 4 mW/cm^2 battery lamp and 1 second with a 30 W/cm^2 light guide, subject to lamp output and substrate transmission. The cured material has a refractive index above 1.490, typical tensile strength of 16 N/mm^2, and elongation above 80%.
Key features
- Optically Clear Bondline: Supports appearance-sensitive glass and crystal assemblies with a cured refractive index above 1.490.
- Yellowing-Resistant Appearance: Resists yellowing in appearance-sensitive decorative assemblies.
- Rapid Optically Clear Cure: Fixtures in 5 seconds with a 4 mW/cm^2 battery lamp under stated conditions.
Applications
Applications include bonding glass, crystal, glass furniture, decorative ornaments, and other appearance-sensitive glass objects.
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Fixture time depends on lamp power, spectral output, distance, and substrate transmission.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical composition | Methacrylate ester | As supplied | |
| Appearance | Colorless, clear | As supplied | |
| Viscosity | 2,200 to 2,900 | mPa s | At 25 deg C; 20 rpm |
| Specific gravity | 1.0 | As supplied | |
| Fixture time | 5 | seconds | 4 mW/cm^2 battery lamp |
| Fixture time | 2 | seconds | 100 mW/cm^2 LED lamp |
| Fixture time | 1 | second | 30 W/cm^2 UV light guide |
| Cure wavelength | 365 to 400 | nm | Match lamp output to the photoinitiator |
After-processing / final-state properties
Strength and optical values are typical cured results for the stated methods.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Steel-to-glass tensile strength | 9 to 10 | N/mm^2 | ASTM D-2095-69 |
| Tensile strength | 16 | N/mm^2 | ISO 37 |
| Refractive index | >1.490 | Cured adhesive | |
| Elongation | >80 | % | ISO 37 |
| Hardness | 60 to 75 | Shore D | ISO 868 |
| Dielectric strength | 12 | kV/mm | Typical cured value |
| Dielectric constant | 4 | 1 MHz at 25 deg C | |
| Water absorption | <4 | % | ISO 62; 2 hours in boiling water |
