Description
PERMABOND UV639 UV-curing adhesive is a UV-curing adhesive developed for use on plastics. It has superb adhesion to acrylic, polycarbonate and PETG. This adhesive can also be used to bond glass, metals and other materials. UV639 cures to give a colourless bond so is ideal for applications where aesthetic appearance is vitally important.
While it performs particularly well on plastics, this adhesive can also be used to bond glass, metals, and other materials.
UV639 cures to form colourless bonds, so it is ideal for applications where aesthetic appearance is vitally important, including shop fittings, acrylic screens in supermarkets, offices, banks and retail, point of sale items, furniture and architectural design applications.
Features:
- Rapid cure in seconds under UV light
- Excellent for acrylic, polycarbonate, PET and PETG
- Thicker slower flowing gel for vertical and gap filling
- Crystal clear, invisible finish – non yellowing
- Excellent thermal & moisture resistance
- High strength
- High elongation
- No need to drill for fixtures and fittings means no risk of stress cracking
- Fixtures & screws can be eliminated in some applications meaning easier cleaning and disinfection
Physical Properties of Uncured Adhesive
| Chemical Composition | Urethane methacrylate |
| Viscosity @ 25C |
20 rpm: 1200 to 1800 mPa.s (cP) |
| Specific Gravity | 1.1 |
Performance Characteristics
|
UV Curing Wavelength |
365 – 420 nm |
|
UV Curing Time (by strength of light) |
Low power 4mW/cm battery lamp: 10 secs |
|
Tensile Strength |
2900psi (20 N/mm^2) |
|
Shear Strength |
Polycarbonate >8 N/mm (>1160 psi)* Glass to Steel: 900psi to 1000psi 6 to 7 N/mm) |
|
Temperature Resistance |
212f (100C) 60% strength 302f (150C) 18% strength |
|
Appearance |
High Clarity, Colorless, Optically Clear, Transparent |
|
Elongation (ISO37) |
>220% |
|
Hardness (ISO868) |
35-45 Shore D |
*The cure time depends on the power of the UV lamp, its spectral output, the distance between the lamp and the components, and the transmission characteristics of the substrates.**LED UV lamps have a narrow range of spectral output. It is important to check suitability with Permabond in order to match the LED lamps peak wavelength with that of the adhesives photoinitiator to ensure optimal adhesive cure.
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