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PERMABOND 741

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  • Manufacturer: Permabond
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PERMABOND® 741 is a flexible cyanoacrylate adhesive, exhibiting improved peel strengths when compared to other grades. It has excellent impact and vibration resistance, and is suitable for bonding dissimilar materials which could be subject to thermal shock or thermal cycling.

FEATURES:

  • Low viscosity
  • Flexible, soft material
  • High elongation
  • Easy to apply and dispense
  • Contains no solvent

APPLICATIONS:

  • Bonding dissimilar materials

Physical Properties of Uncured Adhesive

Chemical composition Cyanoacrylate
Appearance Colourless liquid
Viscosity @ 25°C 2-3 mPa.s (cP)
Specific gravity 1.1

Typical Curing Properties

Maximum gap fill 0.5 mm / 0.02 in
Fixture / handling time* (0.3 N/mm² shear strength is achieved) NBR Rubber: 2-7 secs
PC: 10-20 secs
Acrylic: 2-5 secs
EPDM: 10-20 secs
Silicone (+POP Primer): 2-5 secs
ABS: 2-5 secs
Steel: 1-5 secs
Aluminium: 2-5 secs
Full strength 24 hours

Typical Performance of Cured Adhesive

Shear strength (ISO4587) Steel 6-8 N/mm² (870-1200 psi)
PC 6-8 N/mm² (870-1200 psi)**SF
Acrylic 3-4 N/mm² (435-580 psi)**SF
ABS 3-4 N/mm² (435-580 psi)
PVC 2-3 N/mm² (290-435 psi)**SF
Hardness (ISO868) ~50 Shore D
Elongation at break (ISO37) 100-150%

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