940 Low Odor, Low Bloom Wicking Grade Cyanoacrylate Adhesive, Clear

Physical Properties of Uncured Adhesive

• Chemical composition: Alkoxyethyl cyanoacrylate
• Appearance: Colourless
• Viscosity @ 25°C: 3-10 mPa.s (cP)
• Specific gravity: 1.1

Typical Curing Properties

• Maximum gap fill: 0.05mm (0.002")
• Fixture/handling time* (0.3 N/mm² shear strength is achieved)
  
  • 10-15 seconds (PVC)
  • 10-15 seconds (Phenolic resin)
  • 10-15 seconds (ABS)
  • 2-5 seconds (Neoprene / NBR)
  • 10-15 seconds (Steel)
  • 10-15 seconds (Aluminium)
  • 30-40 seconds (Zinc)
• Full strength 24 hours

*Handling times can be affected by temperature, humidity, and specific surfaces being bonded. Larger gaps or acidic surfaces will also reduce cure speed but this can be overcome by the use of Permabond C Surface Activator (CSA) or Permabond QFS 16.

Typical Performance of Cured Adhesive

• Shear strength* (ISO4587):
  • Steel 16-20 N/mm² (2300-2900psi)
  • Aluminium 8-9 N/mm² (1200-1300psi)
  • Zinc 8 N/mm² (1200psi)
  • ABS >6 N/mm² (900psi) SF**
  • PC >5 N/mm² (700psi) SF**
  • Phenolic 4 N/mm² (600psi)
• Impact strength (ASTM D-950): 3-5 kJ/m² (1.4-2.4 ft-lb/in²)
• Dielectric Strength (DIN 53481): 25 kV/mm
• Dielectric Constant @ 1MHz (DIN 53483): 3
• Coefficient of thermal expansion: 90 x 10^-6mm/mm/°C
• Coefficient of thermal conductivity: 0.1 W/(m.K)
• Hardness (ISO868): 85 Shore D

*Strength results will vary depending on the level of surface preparation and gap.
**SF = Substrate failure