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PERMABOND 748

  • Product code: 748
  • Manufacturer: Permabond
  • Package size: 20g
  • Shelf Life:
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PERMABOND® 748 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.

748 is ideal for use on flexible or semi porous surfaces. It can also be used to bond silicone when used in conjunction with Permabond Polyolefin Primer (POP).

FEATURES:

  • Thixotropic gel
  • Flexible, soft material
  • High elongation
  • Easy to apply and dispense
  • Contains no solvent

APPLICATIONS:

  • Bonding dissimilar materials which could be subject to thermal shock or thermal cycling
  • Use on flexible or semi porous surfaces
  • Bond silicone when used in conjunction with Permabond Polyolefin Primer (POP)

Physical Properties of Uncured Adhesive

Chemical composition Cyanoacrylate
Appearance Colourless thixotrope/gel
Viscosity @ 25°C 20 rpm: 2000-8000 mPa.s (cP)
2rpm: 30,000-50,000 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: 2-5 secs
PC: 10-20 secs
Silicone (+POP Primer): 2-5 secs
Acrylic: 30-50 secs
ABS: 3-6 secs
PVC: 30-50 secs
Steel: 2-5 secs
Aluminium: 2-5 secs
Full strength 24 hours

Typical Performance of Cured Adhesive

Shear strength (ISO4587) Steel 8-12 N/mm² (1200-1700 psi)
Aluminium 2-5 N/mm² (290–725 psi)
PC 5-7 N/mm² (725-1000 psi)
Acrylic 2-4 N/mm² (290-600 psi)
ABS 2-4 N/mm² (290-600 psi)
PVC 2-4 N/mm² (290-600 psi)**SF
Hardness (ISO868) ~30 Shore D
Elongation at break (ISO37) 50-80%

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