PERMABOND UV648
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- Non-Drip Application Control
- UV-Stabilized Plastic Bonding
- Colorless High-Elongation Cure
Product Description
Permabond UV648 is a single-part, non-drip urethane-methacrylate adhesive for UV bonding of acrylic, UV-stabilized plastics, glass, and metals. Its long-wavelength photoinitiator supports cure through UV-stabilized plastic, while the clear formulation produces a colorless bond. At 25 deg C, viscosity is 20,000 to 40,000 mPa s at 20 rpm, and typical fixture time is 2 to 10 seconds under the listed lamp conditions. Cured properties include more than 70% elongation, 50 to 65 Shore D hardness, and overlap shear values above 7 N/mm^2 on polycarbonate and above 4 N/mm^2 on acrylic and PET.
Key features
- Non-Drip Application Control: High shear-dependent viscosity limits flow before UV cure.
- UV-Stabilized Plastic Cure: A long-wavelength photoinitiator supports cure through UV-stabilized plastics.
- Colorless Flexible Bond: The cured adhesive is colorless and provides more than 70% elongation.
Applications
Applications include bonding acrylic, UV-stabilized plastics, glass, metals, polycarbonate, and PET where UV transmission is adequate.
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Fixture time depends on lamp output, distance, and substrate transmission.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical composition | Urethane methacrylate | As supplied | |
| Appearance | Colorless, clear | As supplied | |
| Viscosity | 20,000 to 40,000 | mPa s | At 25 deg C; 20 rpm |
| Viscosity | 120,000 to 180,000 | mPa s | At 25 deg C; 2.5 rpm |
| Specific gravity | 1.1 | As supplied | |
| Typical fixture time | 2 to 10 | seconds | Listed UV lamp conditions |
| Cure wavelength | 365 to 420 | nm | Match lamp output to the photoinitiator |
After-processing / final-state properties
Values are typical cured properties for the stated methods and substrates.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Overlap shear strength - polycarbonate | >7 | N/mm^2 | ISO 4587; substrate failure observed |
| Overlap shear strength - acrylic | >4 | N/mm^2 | ISO 4587 |
| Overlap shear strength - PET | >4 | N/mm^2 | ISO 4587; substrate failure observed |
| Tensile strength | 11 | N/mm^2 | ISO 37 |
| Refractive index | 1.490 | Cured adhesive | |
| Elongation at break | >70 | % | ISO 37 |
| Hardness | 50 to 65 | Shore D | ISO 868 |
| Dielectric strength | 25 to 30 | kV/mm | Typical cured value |
