Products

LOCTITE® 4306™ – UV/Visible light cure

Item Name: LOCTITE® 4306™
Manufacturer: Henkel
Technologies: Cyanoacrylate/UV
Color: Transparent, light yellow-green to dark blue-green liquid
Cure Type: Ultraviolet (UV) / Visible light with secondary humidity cure
Package Size: Contact to Avantek for details.
Shelf Life: Contact to Avantek for details.

1. Product Overview

LOCTITE® 4306™ is a one-part cyanoacrylate adhesive with UV/visible light curing and a secondary humidity cure. It provides rapid fixturing, fillet cure, and surface cure, making it ideal for applications requiring fast processing. The product minimizes blooming and eliminates the need for solvent-based accelerators. It is also suitable for assembling disposable medical devices and meets ISO 10993 biocompatibility standards.

2. Applications

  • Bonding plastics, rubbers, and metals
  • Medical device assembly
  • Rapid fixture and surface curing applications

3. Typical Properties

Uncured Properties

Property Value
Chemical Type Ethyl cyanoacrylate with photoinitiator
Appearance Transparent, light yellow-green to dark blue-green
Specific Gravity @ 25°C 1.05
Viscosity @ 25°C (mPa·s) 10 to 35
Flash Point See SDS

Curing Properties

Property Value
Primary Cure Mechanism UV/Visible Light
Secondary Cure Humidity
Tack-Free Time (Electrodeless D Bulb 100mW/cm²) ≤5 seconds
Depth of Cure (100mW/cm² @ 365nm) Up to 14mm

Cure Speed vs. Substrate

Substrate Fixture Time (seconds)
ABS 5-10
Acrylic 5-10
Aluminum (etched) 20-30
Polycarbonate 30-45
PVC 90-105
Steel (grit blasted) ≤5

Cured Properties

Property Value
Glass Transition Temperature (Tg) 116°C
Shore Hardness (D) 82
Tensile Strength 32.5 N/mm² (4,720 psi)
Elongation at Break 2.2%
Volume Shrinkage 16%
Water Absorption (7 days @ 22°C) 1.1%

Adhesive Performance

Bonded Materials Shear Strength (N/mm²)
Polycarbonate ≥9.0
Acrylic to Glass 2.3
Acrylic to Acrylic 13.6
G-10 Epoxy to Glass 5.0
Steel (grit blasted) to Glass 10.1

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