PERMABOND® 731 Cyanoacrylate

PERMABOND® 731 is a toughened cyanoacrylate with very good impact and peel strength when compared to a conventional cyanoacrylate. It bonds rapidly at room temperature and its viscosity is stable over the shelf life of the product. This provides consistent performance. The product adheres to a variety of surfaces including steel, aluminum, galvanized steel, plastics and elastomers.

FEATURES:

Longer cure allows accurate alignment
Toughened and flexible
Ease of use – no mixing or heat cure
Bonds most materials
100% reactive, no solvents

APPLICATIONS:

Adheres to a variety of surfaces including steel, aluminum, galvanized steel, plastics and elastomers

Physical Properties of Uncured Adhesive

Chemical composition	Ethyl cyanoacrylate
Appearance	Colourless
Viscosity @ 25°C	100-200 mPa.s (cP)
Specific gravity	1.1

Typical Curing Properties

Maximum gap fill	0.15 mm / 0.006 in
Fixture / handling time* (0.3 N/mm² shear strength is achieved)	<30 seconds (Steel) 120-180 seconds (Aluminium) 15-20 seconds (Buna N Rubber) 30-45 seconds (ABS) 15-20 seconds (Neoprene) <30 seconds (Phenolic)
Full strength	24 hours

Typical Performance of Cured Adhesive

Shear strength (ISO4587)	Steel 24-30 N/mm² (3500-4400 psi) Aluminium 13-15 N/mm² (1900-2200 psi) Zinc 10 N/mm² (1450 psi) PVC 5.5 N/mm² (800psi) Acrylic 4 N/mm² (700 psi)
Impact strength (ASTM D-950)	5-10 kJ/m² (2.4-4.8 ft-lb/in²)
Coefficient of thermal expansion	90 x 10^-6 mm/mm/°C
Coefficient of thermal conductivity	0.1 W/(m.K)

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