Applications

LOCTITE® AA 3341™ – Adhesive – Medical Device Assembly

Item Name: LOCTITE® AA 3341™
Manufacturer: Henkel
Technologies: Acrylic, Acrylated Urethane
Color: Transparent light yellow
Cure Type: Ultraviolet (UV) / Visible Light
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.

1. Product Overview

  • Technology: Acrylic
  • Chemical Type: Acrylated urethane
  • Appearance (Uncured): Transparent light yellow liquid
  • Fluorescence: Positive under UV light
  • Components: One-component, no mixing required
  • Viscosity: Low
  • Cure Method: UV/visible light
  • Application: Bonding, Potting
  • Key Benefits: High-speed curing, flexibility, shock absorption

2. Applications

  • Designed primarily for bonding heavily plasticized PVC
  • Good adhesion to thermoplastics like polycarbonate and ABS
  • Suitable for disposable medical device assembly
  • Tested to ISO-10993 biocompatibility standards

3. Typical Properties

Property Value
Uncured Properties
Specific Gravity @ 25°C 1.09
Viscosity (Brookfield RVT) 525 mPa·s (Spindle 1, 10 rpm)
Curing Performance
UV Fixture Time (100 mW/cm², 365 nm) 5 sec
Tack Free Time (100 mW/cm², 365 nm) 8 sec
UV Depth of Cure 4.0 mm
Cured Properties
Shore Hardness (D) 27
Refractive Index 1.5
Elongation @ Break (%) 220
Tensile Strength (N/mm²) 15 (2,200 psi)
Tensile Modulus (N/mm²) 25 (3,600 psi)
Electrical Properties
Surface Resistivity (Ω·cm) 2.30 × 10¹⁵
Volume Resistivity (Ω·cm) 9.62 × 10¹⁴
Dielectric Breakdown Strength 31.5 kV/mm
Adhesion Strength
Block Shear Strength (Polycarbonate to PVC) 6.2 N/mm² (899 psi)
Environmental Resistance
Water Immersion @ 49°C 40% strength retention
Water Immersion @ 87°C 20% strength retention
Heat/Humidity (95% RH @ 38°C) 60% strength retention

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