Permabond UV632 low viscosity thin UV glue optimized for Acrylic Plastics, also great for glass and other plastics

Product Name

Permabond UV632 Low Viscosity Thin UV Glue

Brief Description

Permabond UV632 is a low viscosity, fast-curing, optically clear UV adhesive specifically formulated for bonding acrylic plastics. It is also highly effective on glass, polycarbonate, PET, and certain metals. This urethane methacrylate-based adhesive cures rapidly upon exposure to UV light, forming strong, colorless bonds ideal for applications where aesthetic appearance is vitally important.

Popular Applications & Uses

- Acrylic and polycarbonate display bonding- Signage and LED component assembly- Optical device enclosures- Transparent electronics bonding- Glass and metal fixtures with aesthetic requirements- Medical devices (non-critical life support components)- Glass furniture and display cases- Shop fittings, acrylic screens, and point of sale items

Industries that Commonly Use It

- Plastic Fabrication- Sign & Display- LED/Electronics- Medical Device/ Prosthetics- Furniture- General Manufacturing- Distributers & Resellers- Artist, Artisan- Automotive Service/Repair (for clear component bonding applications where UV adhesives are suitable)- Construction/ Building Services (for specific bonding needs, leveraging general UV acrylic adhesive properties)

Special and Unique Features

- Cures on demand with UV light, allowing for precise component alignment before bonding.- Flowable, low viscosity, and thin, enabling it to wick into tight cracks and thin bond lines.- Superb adhesion to acrylic, including UV-stabilized plastics, due to a long-wavelength photoinitiator.- Cures to a colorless, optically clear bond, making it ideal for aesthetically critical applications.- Fast curing, achieving fixture strength in 2-10 seconds with low-power UV lamps.- 100% solids formulation, meaning no solvents are present, leading to minimal shrinkage.- Exhibits high shear strength and tensile strength for durable bonds.- Non-yellowing formulation ensures long-term clarity.- Compatible with various UV light sources, including low-power LED, UV-arc, or battery-operated lamps.

Key Properties

- Chemical composition: Urethane methacrylate- Appearance: Colourless, clear liquid- Viscosity @ 25°C: 200-400 mPa.s (cP)- Specific gravity: 1.1- Cure wavelength: 365-420 nm- Typical fixture time (acrylic): 2-10 seconds (lamp-dependent)- Tensile strength (ISO37): 13 N/mm² (1900 psi)- Elongation at break (ISO37): >70%- Hardness (ISO868): 55-75 Shore D- Refractive index: >1.490- Temperature resistance (cured adhesive): -55°C to +120°C (-67°F to +250°F)

Surface Compatibility

- Acrylic (optimized for, including UV-stabilized grades)- Glass- Polycarbonate- PET / PETG- Metals (e.g., mild steel, aluminum, copper – often benefits from light abrasion to remove oxide layer)- Various other plastics (compatibility tests recommended due to varying surface energies and mold release agents)

Known backups / known substitutes

- Other Permabond UV-curable adhesives (e.g., UV630, UV640 for different viscosities or specific plastic types; UV639 for gap filling and flexibility)- Other brands of UV light curing acrylic adhesives (e.g., Incure Optik™ series, Osbang, Kafuter)- Cyanoacrylate adhesives (for applications where UV light cannot penetrate or for very fast, small bonds)- Epoxy adhesives (for opaque materials, larger gaps, or where a secondary cure mechanism is required)- Structural acrylic adhesives (non-UV, for opaque materials or specific bond requirements)- Solvent cements (specifically for acrylics, offering a different bonding mechanism by dissolving surfaces)

Comparison Note

Permabond UV632 is particularly distinguished by its specific optimization for acrylic plastics, allowing it to cure effectively even through UV-stabilized grades. Its low viscosity makes it exceptionally suitable for thin bond lines and for wicking into tight, intricate joints. The combination of rapid UV cure, superior optical clarity, and high bond strength provides significant advantages over many traditional adhesives, especially in manufacturing processes where aesthetics, speed, and precision are paramount.