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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

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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