Applications

LOCTITE® 4205™

  • Item Name: LOCTITE® 4205™
  • Manufacturer: Henkel
  • Product Category: Instant Adhesives
  • Technologies: Cyanoacrylate (Ethyl cyanoacrylate)
  • Applications: Bonding rubbers, plastics, and metals, providing impact resistance and heat resistance
  • Color: Colorless to slightly pale yellow
  • Cure Type: Humidity cure
  • Package Size: Contact Avantek for details
  • Shelf Life: Contact Avantek for details

1. Product Overview

LOCTITE® 4205™ is a cyanoacrylate-based adhesive designed for applications requiring heat resistance, impact resistance, and flexibility. It is toughened with elastomers for improved durability and performs well on rubbers, plastics, and metals. The adhesive cures upon exposure to humidity.

2. Applications

  • General bonding applications
  • Suitable for substrates including steel, aluminum, ABS, rubber, phenolic materials, and epoxy composites
  • Ideal for high-heat and high-humidity environments

3. Typical Properties

Uncured State:

Property Value
Appearance Colorless to pale yellow gel
Specific Gravity @ 25°C 1.1
Viscosity (Brookfield RVT) 10,000 to 60,000 mPa·s
Viscosity (Cone & Plate) 400 to 1,600 mPa·s
Flash Point See SDS

Curing Performance:

Substrate Fixture Time (seconds)
Steel (degreased) 50-65
Aluminum 10-30
ABS 10-20
SBR (smooth) 150-180
EPDM 120-180
Phenolic 80-105
PVC 210-240
Polycarbonate 50-75
G-10 Epoxy 15-30
Wood (pine) 180-210

Cured Properties:

Property Value
Glass Transition Temperature 105°C
Thermal Expansion Coefficient 77×10⁻⁶ K⁻¹
Volume Resistivity 2.0×10¹⁵ Ω·cm
Surface Resistivity ≥1.3×10¹⁷ Ω
Dielectric Breakdown Strength 32 kV/mm
Dielectric Constant (1 kHz) 3.22

Adhesive Strength (ISO 4587 Lap Shear Test):

Substrate Strength (N/mm²) Strength (psi)
Steel (grit blasted) 18.7-23.2 2,710-3,360
Aluminum 14.5 2,100
ABS 11.6-13 1,680-1,885
Phenolic 8.6-9.5 1,250-1,380
G-10 Epoxy 9.2-12 1,330-1,740

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