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® AY 103-1 / Hardener HY 991
Manufacturer: Huntsman Advanced Materials
Technologies: Low viscosity two-component epoxy adhesive
Color: Pale yellow (mixed)
Cure Type: Room temperature curing with heat acceleration
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.
1. Product Overview
Araldite® AY 103-1 with Hardener HY 991 is a low-viscosity, two-component epoxy adhesive system. It cures at room temperature, is transparent with high strength, solvent-free, and designed for easy application over large areas. The cured adhesive offers good heat resistance (up to ~50 °C) and strong adhesion to metals, plastics, ceramics, glass, and rubber.
2. Applications
Multipurpose structural bonding of metals, ceramics, glass, rigid plastics, rubbers, and composites.
Suitable for large-area bonding due to low viscosity and easy application.
Widely used in industries requiring transparent, strong bonds with reliable performance at moderate temperatures.
3. Typical Properties
| Property | Araldite® AY 103-1 (Resin) | Hardener HY 991 | Mixed Adhesive |
|---|---|---|---|
| Appearance | Clear liquid | Clear, amber liquid | Pale yellow liquid |
| Specific Gravity | 1.1 – 1.2 | 0.88 – 0.98 | ~1.0 |
| Viscosity at 25 °C (Pa·s) | 1.8 – 2.4 | 15 – 35 | – |
| Gel Time at 25 °C (min) | – | – | 200 – 400 |
| Mix Ratio (by weight / by volume) | 100 / 100 | 40 / 50 | Homogeneous mixture |
| Lap Shear Strength at 25 °C (30 min cure at 100 °C) | – | – | >14 MPa |
| Heat Resistance | – | – | Up to ~50 °C |
Typical Cured Properties
Lap shear strength (metal joints, sandblasted, cured 16 h at 40 °C):
Aluminium, steel, stainless steel, copper, brass: typically 10–20+ N/mm².
Plastics (lightly abraded & degreased, cured 16 h at 40 °C):
SMC, polycarbonate, ABS, nylon 6, PVC, GRP, GRE: typically 5–15 N/mm².
Roller peel (16 h/40 °C): ~1 N/mm.
Tensile strength: 38 MPa.
Tensile modulus: 1.7 GPa.
Glass transition temperature: ~55 °C (7 d cure at 23 °C).
Shore D hardness: D 80.
Shear modulus: 0.4 GPa at 30 °C, decreasing with temperature.
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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