Applications

LOCTITE® 4206™ – Elastomer-Toughened Cyanoacrylate Adhesive – Bonding metals, rubbers, plastics; heat and humidity-resistant applications

  • Item Name: LOCTITE® 4206™
  • Manufacturer: Henkel
  • Product Category: Instant Adhesives
  • Technologies: Cyanoacrylate, Ethyl Cyanoacrylate, Elastomer-Toughened
  • Applications: Bonding rubbers, plastics, and metals; suitable for medical device assembly
  • Color: Colorless to slightly pale yellow (uncured)
  • Cure Type: Humidity-cured
  • Package Size: Contact Techniq VN for details
  • Shelf Life: Contact Techniq VN for details

1. Product Overview

LOCTITE® 4206™ is a toughened cyanoacrylate adhesive designed for bonding applications that require heat resistance. It is formulated with elastomers to enhance flexibility and durability under heat and humidity. Suitable for rubbers, plastics, and metals, it is commonly used in medical device assembly. The product meets ISO 10993 standards for biocompatibility.

2. Applications

  • Bonding rubbers, plastics, and metals
  • Medical device assembly
  • General-purpose adhesive applications requiring heat and humidity resistance

3. Typical Properties

Property Value
Uncured Properties
Appearance Colorless to slightly pale yellow liquid
Viscosity (mPa·s @ 25°C) 150 – 600
Specific Gravity 1.1
Curing Performance
Fixture Time (seconds) Steel: 10-20, Aluminum: 5-10, ABS: 5-10, SBR: 45-60
Full Cure Time 24 hours
Cured Properties (After 72 hours @ 22°C)
Coefficient of Thermal Expansion (K⁻¹) 210×10⁻⁶
Thermal Conductivity (W/m·K) 0.2073
Glass Transition Temperature (°C) 129.5
Tensile Strength (N/mm²) Yield: 29.27, Break: 25.27
Elongation (%) Yield: 5.3, Break: 18.3
Electrical Properties
Volume Resistivity (Ω·cm) 2.4×10¹⁵
Surface Resistivity (Ω) 1.5×10¹⁵
Dielectric Breakdown Strength (kV/mm) 31.1

4. Adhesive Performance

Material Lap Shear Strength (N/mm²)
Steel (grit blasted) 14.1 – 16.7
Aluminum 1.0 – 1.5
ABS 3.3 – 3.9
Phenolic 8.6 – 9.5
G-11 Epoxyglass 9.6 – 12.3

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