ARALDITE® 8680 / HARDENER 5868

ARALDITE® 8680 / HARDENER 5868 is a two-part, black system specifically formulated for bonding plastics, including polycarbonate, ABS, nylon, and Telene®, as well as painted metals. It features excellent environmental stability and impact resistance.

RTU Product Type: 2K (2 component) Adhesive, Polyurethane (PU) Adhesive

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Fibre-reinforced Plastic (FRP), Metal, Nylon, Polycarbonate (PC), Sheet Molding Compound (SMC)

Chemical Family: Polyurethanes (PU)

Features: Excellent Toughness, Good Environmental Resistance, High Strength, Impact Resistance, Resilient

Technical Data Sheet
  • TypeDocument Name
View All Documents

Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Advantages
  • Tough and resilient
  • Convenient miw ratio
  • Bonds a wide variety of materials
  • Instant thixotropy on mixing

Applications & Uses

Compatible Substrates & Surfaces
Processing Information

Cure Schedule

Temperature

Handling Strength¹

Minimum Cure Time

77 °F (25 °C) 2 hours 12 hours
110 °F (43 °C) 30 minutes 8 hours
140 °F (60 °C) 15 minutes 90 minutes

¹) Time to reach 200 psi lap shear strength

Application Information
  • Telene®
  • ABS, polycarbonate and other plastics
  • SMC and FRP
  • Primed metals

Properties

Physical Form

Technical Details & Test Data

Typical Cured Information

Tested at 77 °F (25 °C) unless otherwise noted ⁽¹⁾

Property Test Method Test Values Unit
Hardness (Shore D) ASTM D-2240 40 (85) -
Ultimate Tensile Strength ASTM D-638 2100 (14.5) psi (MPa)
Elongation ASTM D-638 250 %
Tg (per DMA) ASTM D-4065 122 (50) °F (°C)
Coefficient of Thermal Expansion ASTM D-831 7.5 x 10⁻⁵ in/in/°C

 

Substrate Test Method Lap Shear Strength Unit
Aluminum² ASTM D-1003 2900 (20) psi (MPa)
Telene³ SAE J1525 980 (6.8) psi (MPa)
SMC SAE J1525 520 (3.6) psi (MPa)

 

Effect of Test Temperature
(Tested on SMC)  
-40 °F (-40 °C) 550 (3.8)
74 °F (23 °C) 525 (3.6)
180 °F (82 °C) 65 (0.4)

(¹) Unless otherwise noted, cured 7 days at 77 °F (25 °C)
(²) Etched per ASTM D2651, Cured 12 hours at 77 °F (25 °C) followed by 30 minutes at 275 °F (135 °C)
(³) Abraded plus solvent wipe

Storage & Handling

Storage Conditions

Araldite® 8680 Resin / Hardener 8685 polyurethane adhesive should be stored in a dry place, in their original, sealed container at temperatures between +2°C and +40°C (+36°F and 104°F). Under these storage conditions, the shelf life is 1 year. The product should not be exposed to direct sunlight. If stored below 60°F, the adhesive should be brought to 60°F - 77°F and conditioned at this temperature for some time prior to use.

Other

Physical Properties
ValueUnitsTest Method / Conditions
Gel Time8.0-10.0 mmASTM D2471 at 25°C, 90g mass