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: Two-component, room temperature curing, low-viscosity epoxy adhesive
• Color: Component A – Clear liquid, Hardener – Amber liquid, Mixed adhesive – Pale yellow
• Cure Type: Room temperature curing (16 hours at 40°C)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Contact to Techniq VN for details.
Araldite® AY 103-1 / Hardener HY 991 is a low-viscosity, two-component epoxy adhesive system. It cures at room temperature, is transparent, and provides high-strength bonding. The system is solvent-free, easy to apply over large areas, and offers heat resistance up to ~50°C.
Multipurpose adhesive for bonding a wide range of substrates: metals, ceramics, glass, rubbers, rigid plastics, and composites.
Particularly effective and easy to use over large bonding areas.
Suitable for structural adhesives applications requiring durable joints.
| Property | Araldite® AY 103-1 (Resin) | Hardener HY 991 |
|---|---|---|
| Appearance | Clear liquid | Clear, amber liquid |
| Specific Gravity | 1.1 – 1.2 | 0.88 – 0.98 |
| Viscosity at 25°C (Pa·s) | 1.8 – 2.4 | 15 – 35 |
| Property | Value |
|---|---|
| Appearance | Pale yellow |
| Mix Ratio (by weight) | 100 (Resin) : 40 (Hardener) |
| Mix Ratio (by volume) | 100 : 50 |
| Gel Time at 25°C | 200 – 400 min |
| Lap Shear Strength (30 min/100°C cure) | > 14 MPa |
| Property | Value |
|---|---|
| Minimum Cure Time for Shear Strength (>1 N/mm²) | 16 h at 10°C / 12 h at 15°C / 2 h at 23°C |
| LSS >10 N/mm² (Cure at 60°C) | 65 min |
| LSS >10 N/mm² (Cure at 100°C) | 13 min |
| Lap Shear Strength (metals, sandblasted, 16h/40°C, tested at 23°C) | Aluminium ~22 N/mm², Steel ~20 N/mm², Stainless Steel ~18 N/mm², Copper ~17 N/mm², Brass ~15 N/mm² |
| Lap Shear Strength (plastics, abraded & degreased, 16h/40°C) | ABS ~12 N/mm², Polycarbonate ~11 N/mm², PVC ~10 N/mm², SMC/GRP/GRE ~15 N/mm² |
| Roller Peel Strength (16h/40°C cure) | 1 N/mm |
| Tensile Strength | 38 MPa |
| Tensile Modulus | 1.7 GPa |
| Glass Transition Temperature | 55°C (7d at 23°C cure) |
| Shore D Hardness | 80 (16h/40°C cure) |
| Shear Modulus (G’, 30°C → 110°C) | 0.4 GPa → 5 MPa |
| Test Condition | Lap Shear Strength Retention |
|---|---|
| Immersion in water (23°C, 90 days) | Maintains ~70% strength |
| Immersion in water (90°C, 90 days) | Significant reduction |
| Gasoline, lubricating oil, xylene | Moderate retention |
| Tropical weathering (up to 90 days) | Retains >80% initial strength |
| Heat ageing (70°C, 90 days) | Retains ~70–80% strength |
| Thermal Cycling (-30°C ↔ 70°C, 100 cycles) | Stable |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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