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.

 

The information, specifications, and materials provided with this product are for general informational purposes only and are subject to change without notice. The product is provided “as is” without any warranties, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement. Users are responsible for ensuring the product is suitable for their intended application and for following all applicable safety guidelines and instructions.

The information, specifications, and materials accessible here may not reflect the most current version. Please use the Request a Document feature for the most current product documentation available.

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

Material Compatibility: Acrylonitrile Butadiene Styrene (ABS) Substrate, Fibre-reinforced Plastic (FRP) Substrate, Metal Substrate, Nylon Substrate, Polycarbonate (PC) Substrate, Sheet Molding Compound (SMC) Substrate

Chemical Family: Polyurethanes (PU)

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

Enhanced TDS

Identification & Functionality

Features & Benefits

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

Applications & Uses

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

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

Material Compatibility
Application Information
ValueUnitsTest Method / Conditions
Mix Ratio0.8%(W)Hardener : Resin
Physical Properties
ValueUnitsTest Method / Conditions
Gel Time8.0-10.0mASTM D2471 at 25°C, 90g mass