Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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Item Name: Araldite® AW 139-1 / Hardener HW 5323-1
Manufacturer: Huntsman Advanced Materials
Technologies: Two-component epoxy paste adhesive
Color: Grey paste (mixed)
Cure Type: Room temperature curing with elevated temperature options
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.
1. Product Overview
Araldite® AW 139-1 / Hardener HW 5323-1 is a two-component, room temperature curing epoxy paste adhesive. It is thixotropic, gap-filling (up to 5 mm), and non-sagging. The adhesive provides high strength, excellent environmental and chemical resistance, and sustained performance under elevated temperatures. When cured, it forms a grey paste with robust bonding properties for metals, composites, and plastics.
2. Applications
Bonding metals, electronic components, and GRP structures.
Suitable for high-temperature or chemically aggressive service environments.
Effective for metal-to-metal and plastic-to-plastic bonding.
Available in cartridge form (Araldite® 2014-2) for ready-to-use application with dispensing tools.
3. Typical Properties
| Property | Araldite® AW 139-1 | Hardener HW 5323-1 | Mixed Adhesive |
|---|---|---|---|
| Colour (visual) | Beige paste | Grey paste | Grey paste |
| Specific Gravity | ~1.6 | ~1.5 | ~1.6 |
| Viscosity at 25 °C (Pa·s) | 50 – 80 (thixotropic) | Thixotropic | Thixotropic |
| Mix Ratio (parts by weight/volume) | 100 | 50 | – |
| Pot Life (100 g at 25 °C) | – | – | ~110 min |
| Lap Shear Strength at 25 °C | – | – | >14 MPa |
Cured Properties (typical values):
| Property / Test (Cure: 16 h at 40 °C, tested at 23 °C) | Typical Value |
|---|---|
| Lap shear strength – Aluminium (ISO 4587) | ~20–25 MPa |
| Lap shear strength – Steel | ~18–22 MPa |
| Lap shear strength – Stainless steel | ~15–20 MPa |
| Lap shear strength – Copper/Brass | ~12–18 MPa |
| Lap shear strength – Plastics (ABS, PVC, PMMA, etc.) | Substrate failure (strong bond) |
| Glass Transition Temperature (Tg) | ~69 °C (DMA), ~85 °C (DSC) |
| Flexural Strength (ISO 178) | 60 MPa |
| Flexural Modulus | 3500 MPa |
| Tensile Strength (ISO 527) | 30 MPa |
| Tensile Modulus | 3100 MPa |
| Elongation at break | 0.9 % |
| Dielectric Strength | 25 kV/mm |
| Surface Resistivity | 4.6 × 10^16 Ω |
| Volume Resistivity | 2.7 × 10^15 Ω·cm |
| Dielectric Constant (60 Hz) | 4.0 |
| Loss Tangent (60 Hz) | 1.3 % |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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