Permabond UV683 UV Tack-Free Adhesive and Coating, designed for Doming, Surface Coating, Sealing, and non-sicky dry finish

Product Name

Permabond UV683 UV single part, fast curing, UV curable adhesive for coating

Brief Description

Permabond UV683 is a single-part, fast-curing, UV curable acrylate adhesive specifically developed for coating and doming applications. It is optically clear, tack-free, and cures rapidly upon exposure to UV light, making it suitable for high-throughput manufacturing processes.

Doming is when the UV glue is applied over some object and is coated with it, often forming a mild dome atop the area. UV683 is engineered to fully cure tack-free (not sicky residue but dry and hard to the touch). So it's an excellent Doming and Coating formula, that also works great as a regular UV glue.

Popular Applications & Uses

- Coating and doming applications- Coating smart card microchips- Encapsulation of electronic components- Bonding screens on phones, laptops, and tablets- Optical equipment assembly (cameras, telescopes)- Medical disposable equipment (catheters, syringes)- Automotive assembly (headlamps, seat belt monitoring switches)- Circuit board fabrication (bonding components like resistors)- Point of sale display items or signs

Industries that Commonly Use It

- LED/Electronics- Medical Device/ Prosthetics- General Manufacturing- Automotive Service/Repair- Plastic Fabrication- Sign & Display- Chemical Industry

Special and Unique Features

- Cure on demand- Ideal viscosity for doming- Tack-free finish- Fast curing with low-power lamps- 100% solids, no solvents- Optically clear formulation- High temperature resistance, allowing it to resist wave-soldering

Key Properties

- Chemical Composition: Acrylate- Appearance: Colorless- Viscosity @ 25°C: 1,000-1,600 mPa.s (cP)- Specific Gravity: 1.1- Tensile Strength (ISO37): 12-14 N/mm² (1700-2000 psi)- Light Transmittance: >98%- Refractive Index: >1.490- Elongation at break (ISO37): >50%- Hardness (ISO868): 50-65 Shore D- Water absorption (ISO62) 2 hours in boiling water: <2%- Glass transition (Tg) DSC 20°C/min rate: +55°C- Cure wavelength: 320 – 420 nm- Minimum operating temperature: -55°C (-67°F)

Surface Compatibility

- Can be used on most surfaces, although one substrate must be clear for UV light to pass through- Surfaces should be clean, dry, and grease-free before applying the adhesive- Particular care should be taken to remove silicone-based cleaning agents- Some metals such as aluminum, copper, and its alloys, will benefit from light abrasion with emery cloth to remove the oxide layer- Isopropanol can be used to degrease most surfaces- Where thermoplastic surfaces are involved, tests are recommended to ensure compatibility, as mold release agents may affect bond strength- Commonly used with plastics, rubbers, ceramics, glass, and metal substrates

Known backups / known substitutes

- Permabond UV681 (tack-free coating for electronics, lower viscosity)- Permabond UV6160 (optical clarity, enhanced transparency)- Permabond UV6231 (water resistant, for glass and crystal)- Permabond UV7141 (UV and anaerobic curing, for ceramic-coated glass, mirrors)- Permabond UV670 (tough, flexible, for metalized plastics)- Loctite AA 3105 (high strength, low viscosity, for PVC to polycarbonate)- Loctite AA 3311 (low viscosity, slightly flexible, UV/visible adhesive)- Dymax 429 Lightweld UV Cure Adhesive (for glass bonding)- Dymax 425 UV Light Cure Adhesive (for architectural bonding)- Dymax 3099 UV Light Cure Adhesive (for plastic bonding)

Comparison Note

Permabond UV683 offers rapid, on-demand curing with UV light, providing a tack-free, optically clear finish, which is a significant advantage over traditional adhesives that require longer cure times or heat. Its 100% solids formulation means no solvents are released during curing. While many UV adhesives exist, UV683 is specifically formulated for coating and doming, with high temperature resistance suitable for processes like wave-soldering, distinguishing it from general-purpose UV adhesives.