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 2243-2 L / Aradur® HY 842
Manufacturer: Huntsman Advanced Materials
Technologies: Modified, solvent-free epoxy resin with inorganic filler and polyamidoamine hardener
Color: Resin – Blue viscous liquid; Hardener – Clear liquid
Cure Type: Room temperature or elevated temperature curing (24h RT or 6h at 60 °C)
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.
Araldite® CW 2243-2 L (epoxy resin) combined with Aradur® HY 842 (polyamidoamine hardener) forms an optimally filled epoxy casting system. It is designed for casting and vacuum casting at slightly elevated curing temperatures, producing flexible castings with low viscosity, excellent thermal shock resistance, and UL 94 V-0 flame resistance. The cured system also meets EN 45545-2 railway fire safety standards.
Small transformers
Suppressor chokes
Electrical components requiring:
Thermal shock resistance
Flame retardancy (UL 94 V-0)
Compliance with railway safety standards (EN 45545-2, R22 HL1 / R23 HL2)
| Property | CW 2243-2 L (Resin) | HY 842 (Hardener) |
|---|---|---|
| Appearance | Blue viscous liquid | Clear liquid |
| Viscosity @ 25 °C (mPa·s) | 4000–12000 | 400–700 |
| Specific Gravity (g/cm³) | 1.610–1.650 | 0.95 |
| Parameter | Value |
|---|---|
| Mix Ratio (by weight) | 100 : 20 |
| Mix Ratio (by volume) | 100 : 34 |
| Mixed Viscosity @ 25 °C | ~2600 mPa·s |
| Mixed Viscosity @ 40 °C | ~1100 mPa·s |
| Gel Time @ 25 °C | ~300 min |
| Gel Time @ 40 °C | ~180 min |
| Gel Time @ 60 °C | ~60 min |
| Pot Life @ 25 °C | ~180 min |
| Minimum Cure Cycle | 24 h at RT or 6 h at 60 °C |
| Property | Value |
|---|---|
| Glass Transition Temperature (Tg) | 22 °C |
| Shear Modulus | 43 MPa |
| Tensile Modulus | 18 MPa |
| Tensile Strength | 4 MPa |
| Elongation at Break | 27 % |
| Coefficient of Thermal Expansion (α1 / α2) | 86 / 143 ppm/K |
| Thermal Conductivity | 0.6 W/mK |
| Hardness | Shore D 41 |
| Flammability | UL 94 V-0 (6 mm) |
| Oxygen Index (LOI) | 29 % |
| Smoke Density (ISO 5659-2) | Ds (max) 273 |
| Smoke Toxicity (NF X 70-100) | CIT 0.91 |
| Water Absorption (1 d / 23 °C) | 0.22 % |
| Water Absorption (30 min / 100 °C) | 0.6 % |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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