Permabond 731 Instant Adhesive-Toughened & Flexible Slow-Set General Purpose

Description

Get the strength of a structural adhesive with the speed of a super glue. Permabond 731 is a toughened, crystal-clear instant adhesive engineered to resist impact, vibration, and peel forces that would crack standard super glues. Its unique ‘slow-set’ formula gives you valuable seconds to align parts perfectly before locking them in place, making it the ideal choice for bonding dissimilar materials, flexible components, and aesthetic assemblies where failure is not an option.

PERMABOND 731 is a toughened and flexible cyanoacrylate adhesive designed to provide excellent impact and peel strength, outperforming conventional cyanoacrylates. This product is a 100% reactive, solvent-free adhesive that cures rapidly at room temperature. It’s ideal for a wide range of applications due to its robust bonding capabilities on various materials, including metals, plastics, and elastomers.

Key Features & Benefits

• Toughened and Flexible Formula: Offers superior impact and peel strength for more durable bonds.

• Rapid Room Temperature Cure: Bonds quickly without the need for heat or special equipment.

• User-Friendly: Comes ready to use with no mixing required.

• Versatile Bonding: Effectively adheres to most materials, including steel, aluminum, galvanized steel, Buna N rubber, ABS, and neoprene.

• Longer Cure Time: The slightly longer cure time compared to standard cyanoacrylates allows for accurate alignment of parts.

Technical Specifications

Performance Data

Fixture/Handling Time (Approximate)

• Steel: < 30 seconds

• Aluminium: 120-180 seconds

• Buna N Rubber: 15-20 seconds

• ABS: 30-45 seconds

• Neoprene: 15-20 seconds

Shear Strength (ISO4587)

• Steel: 24-30 N/mm (3500-4400 psi)

• Aluminium: 13-15 N/mm (1900-2200 psi)

• Zinc: 10 N/mm (1450 psi)

• PVC: 5.5 N/mm (800 psi)

Additional Properties

• Peel Strength (ASTM D-903): 40-60 N/25mm (9-13 PIW)

• Impact Strength (ASTM D-950): 5-10 kJ/m (2.4-4.8 ft-lb/in)

• Temperature Range (Cured): -55C to 100C (-65F to 212F)

• Dielectric Strength: 25 kV/mm

Directions for Use

1. Ensure surfaces are clean, dry, and grease-free. For best results on metals like aluminum, lightly abrade the surface to remove oxide layers.

2. Apply a sparing amount of adhesive to one surface.

3. Bring components together quickly and with accurate alignment.

4. Apply sufficient pressure to spread the adhesive into a thin film.

5. Do not disturb the bond until sufficient strength is achieved (in seconds). Full strength is reached in 24 hours.

Note: For difficult or porous surfaces, using a Permabond activator is recommended. To bond polyolefin materials (polypropylene, polyethylene, PTFE, silicone), prime the surface first with Permabond Polyolefin Primer (POP).