Applications

LOCTITE® 422™

  • Item Name: LOCTITE® 422™
  • Manufacturer: Henkel
  • Product Category: Instant Adhesives
  • Technologies: Cyanoacrylate (Ethyl Cyanoacrylate)
  • Applications: Bonding plastics, rubbers, and metals
  • Color: Clear liquid
  • Cure Type: Humidity cure
  • Package Size: Contact Avantek for details
  • Shelf Life: Contact Avantek for details

1. Product Overview

LOCTITE® 422™ is a high-viscosity, one-part cyanoacrylate adhesive that cures with humidity. It is designed for bonding plastics, rubbers, and metals. It meets the requirements of Military Specification Mil-A-46050C and Commercial Item Description A-A-3097.

2. Applications

  • General-purpose instant adhesive
  • Suitable for bonding plastics, rubbers, and metals
  • Used where high-viscosity adhesives are required

3. Typical Properties

Before Mixing (Uncured Properties)
Property Value
Appearance Clear liquid
Specific Gravity @ 25°C 1.05
Viscosity (mPa·s) 1,700 – 3,000 (Cone & Plate)
Brookfield Viscosity (mPa·s) 2,000 – 2,500
Vapor Pressure (hPa) <1
After Mixing (Cured Properties)
Property Value
Coefficient of Thermal Expansion (K⁻¹) 100×10⁻⁶
Thermal Conductivity (W/m·K) 0.1
Softening Point (°C) 165
Dielectric Constant (1 kHz) 2 – 3.5
Volume Resistivity (Ω·cm) 2×10¹⁵ – 10×10¹⁵
Dielectric Breakdown Strength (kV/mm) 25
Adhesive Performance (Lap Shear Strength @ 22°C)
Substrate Strength (N/mm²) Strength (psi)
Steel (grit blasted) 18 – 26 2,610 – 3,770
Aluminum (grit blasted) 12 – 19 1,740 – 2,755
ABS 6 – 20 870 – 2,900
PVC 6 – 20 870 – 2,900
Polycarbonate 5 – 20 725 – 2,900
Environmental Resistance (Lap Shear Strength after Exposure @ 22°C)
Condition 100 h 500 h 1000 h
Motor Oil (40°C) 100% 100% 95%
Gasoline (22°C) 100% 100% 100%
Ethanol (22°C) 100% 100% 100%
Heat/Humidity (95% RH, 40°C) 80% 75% 65%

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