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® CW 30407 / Aradur® HW 30408 / HY 30409
• Manufacturer: Huntsman Advanced Materials
• Technologies: High performance epoxy resin system with adaptable thermal conductivity and viscosity
• Color: Anthracite (resin), white-grey (HW 30408), clear transparent (HY 30409)
• Cure Type: Thermal cure, suitable for APG & vacuum casting, thermal class 180 (H)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Corresponds to expiry date on label (store sealed, dry conditions
Araldite® CW 30407 / Aradur® HW 30408 / Aradur® HY 30409 is a high-performance, filled epoxy resin system designed for e-motor potting in e-mobility applications. It offers adaptable viscosity and thermal conductivity, fast curing, excellent flow and gap-filling ability, as well as strong thermal shock resistance. Suitable for thermal class 180 (H) electrical insulation.
Electrical motors and power electronics
Potting and encapsulation using Automated Pressure Gelation (APG) or vacuum casting
High thermal conductivity applications (0.8 – 1.1 W/m·K)
| Property | CW 30407 | HW 30408 | HY 30409 |
|---|---|---|---|
| Type | Modified epoxy resin with inorganic filler | Liquid amine hardener with inorganic filler | Liquid amine hardener |
| Appearance | Anthracite viscous liquid | White-grey viscous paste | Clear transparent liquid |
| Viscosity | 3,000 – 8,000 mPa·s (60°C) | 2,300 – 7,000 mPa·s (60°C) | 10 mPa·s (25°C) |
| Specific Gravity | 2.02 – 2.12 g/cm³ | 1.94 – 2.07 g/cm³ | 0.95 g/cm³ |
| Mix Ratio | CW 30407 | HW 30408 | HY 30409 |
|---|---|---|---|
| Filled system | 100 | 50 | – |
| Partly filled | 100 | – | 9 |
| 3K system | 100 | (50·a) | 9·(1–a) |
Viscosity (mixed, 60°C): 1,000 – 4,500 mPa·s (depending on hardener)
Pot life (60°C): 17 – 21 min
Gel time: 25–65 min at 60–80°C; 11 min at 100°C; 330–450 s at 120°C
Standard cure: 2 h at 120°C (test plates)
| Property | CW 30407 + HW 30408 | CW 30407 + HY 30409 |
|---|---|---|
| Color | Dark grey | Dark grey |
| Tg (midpoint, DSC) | 60°C | 65°C |
| Density | 2.15 g/cm³ | 2.0 g/cm³ |
| Shore D Hardness | 87 | 86 |
| Tensile Strength | 55 MPa | 55 MPa |
| Elongation at Break | 1.5% | 2.0% |
| Tensile Modulus | 11 GPa | 9 GPa |
| Flexural Strength | 110 MPa | 110 MPa |
| Flexural Modulus | 15 GPa | 9 GPa |
| Fracture Toughness (KIC) | 4.0 MPa√m | 4.0 MPa√m |
| Specific Energy at Break (GIC) | 1,000 J/m² | 1,500 J/m² |
| CTE (below Tg) | 20 ppm/K | 30 ppm/K |
| Thermal Conductivity | 1.1 W/m·K | 0.8 W/m·K |
| Water Absorption | 0.2% | 0.2% |
| Property | CW 30407 + HW 30408 | CW 30407 + HY 30409 |
|---|---|---|
| Dielectric Loss (tan δ, 50Hz) | 6.0% | 6.0% |
| Dielectric Constant (εr, 50Hz) | 6.0 | 5.8 |
| Volume Resistivity | 2.5 × 10¹⁴ Ω·cm | 1.3 × 10¹⁵ Ω·cm |
| Tracking Index (CTI) | >600 (≤1 mm) | >600 (≤1 mm) |
| Dielectric Strength (3 mm) | 23 kV/mm | 23 kV/mm |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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