Product Name
Permabond UV640 thicker viscosity general purpose impact resistant clear UV glue
Brief Description
Permabond UV640 is a single-part, fast-setting, UV-curable adhesive specifically engineered for bonding plastics, including polycarbonate, as well as glass and metals. It offers high shear strength, elongation, and impact resistance, making it particularly suitable for applications involving substrates with differing coefficients of thermal expansion. This adhesive cures on demand when exposed to UV light, is 100% solids, and is solvent-free.
Popular Applications & Uses
- Bonding a wide variety of plastics, including polycarbonate and acrylic.- Bonding glass to glass or glass to metal, forming high-strength bonds for load-bearing joints in items like glass furniture and display cases.- Electronics assembly, including bonding components, wire tacking, display assembly, and conformal coatings for circuit boards.- Medical device manufacturing for assembling disposable components such as syringes, catheters, and for needle bonding.- Automotive applications like sealing headlights, bonding glass, assembling interior and exterior parts, and bonding plastic trims.- Architectural bonding for elements such as glass balconies and staircases.- Jewelry and crafts for bonding gemstones, metals, and glass.- Applications requiring the bonding of dissimilar substrates where different coefficients of thermal expansion are a factor.
Industries that Commonly Use It
- LED/Electronics- Medical Device/ Prosthetics- Automotive Service/Repair & Transportation/ Specialty Vehicle- Furniture (especially glass furniture and display cases)- Sign & Display- Plastic Fabrication- Metal Fabrication- Construction/ Building Services (for architectural bonding)- Artist, Artisan & Prosumer (for jewelry and crafts)- General Manufacturing- Chemical Industry- Distributers & Resellers- Industrial Supply
Special and Unique Features
- Cures on demand with UV light, enabling precise alignment of parts before bonding.- Fast curing, often within seconds, even with low-power UV lamps.- 100% solids formulation, meaning it is solvent-free, which results in low volatile organic compounds (VOCs) and minimal waste.- Exhibits very high shear strength, elongation, and impact resistance, contributing to durable bonds.- Ideal for bonding dissimilar substrates that have different coefficients of thermal expansion, accommodating movement and stress.- Optically clear and non-yellowing, ensuring invisible bond lines and maintaining aesthetic appeal.- Thicker viscosity, making it suitable for applications requiring gap filling or use on vertical surfaces without dripping.
Key Properties
- Chemical composition: Methacrylate ester.- Appearance: Colorless, clear liquid.- Viscosity @25°C: 3,000-5,000 mPa.s (cP) at 20rpm; 12,000-25,000 mPa.s (cP) at 2.5rpm.- Specific gravity: 1.1.- Hardness, Shore D: 55-75.- Tensile Strength: 13.0 MPa (1890 psi).- Elongation at Break: 110%.- Maximum Service Temperature, Air: 121 °C (250 °F).- Minimum Service Temperature, Air: -53.9 °C (-65.0 °F).- Refractive Index: 1.47.- Dielectric Constant: 4.0 @ 1.0e+6 Hz, 25°C.- Dielectric Strength: 12.0 kV/mm (305 kV/in).- Cure mechanism: Photopolymerization initiated by photoinitiators upon exposure to UV light.- Resistance: Good moisture and chemical resistance, capable of withstanding temperature fluctuations.
Surface Compatibility
- Plastics: Excellent adhesion to a variety of plastics, including polycarbonate and acrylic.- Glass: Bonds well to glass.- Metals: Compatible with metals such as aluminum, copper, and mild steel.- Ceramics: Can bond ceramic materials.- Composites: Adheres to some composite materials.- Preparation: Surfaces should be clean, dry, and free of grease for optimal bond strength. Light abrasion may improve bonding to some metals. Compatibility with thermoplastic surfaces should be tested.
Known backups / known substitutes
- Other Permabond UV-curable adhesives, such as UV630, UV632, UV625, UV610, UV620, UV643, UV645, UV670, UV681, UV6160, UV6231, and UV7141, which offer varying viscosities and specific application benefits.- Dymax UV curing adhesives, including Dymax 429, Dymax 425, and Dymax 3099.- Incure UV glues, such as Incure Cyro-Weld™ 5005 and Incure Uni-Seal™ 6322.- Pacer Zapit Light Curing Glue.- General adhesive categories like cyanoacrylates (instant adhesives), urethanes, MMA adhesives, and acrylic solvent cements, though these may differ in clarity, cure speed, and specific properties compared to UV640.
Comparison Note
Permabond UV640 is distinguished by its specialized formulation for plastics, offering exceptional impact resistance and the ability to effectively bond dissimilar substrates with varying thermal expansion coefficients. Its thicker viscosity provides an advantage for applications requiring significant gap filling or use on vertical surfaces, setting it apart from lower viscosity UV adhesives. This product delivers rapid, on-demand curing, superior optical clarity, and strong, durable bonds without the use of solvents, making it a highly versatile solution for precision and high-speed manufacturing across a diverse range of industries.
