• Item Name: Araldite® CW 2122-1 Resin / Aradur® HY 2901-2 Hardener
• Manufacturer: Huntsman Advanced Materials
• Technologies: Filled epoxy casting system with prefilled anhydride hardener
• Color: Resin – red-brown viscous liquid, Hardener – red liquid
• Cure Type: Heat curing (minimum: 4 h at 70°C + 6 h at 90°C)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 12 months
Araldite® CW 2122-1 resin with Aradur® HY 2901-2 hardener is a filled epoxy casting system formulated for high-temperature processing. It demonstrates good impregnating capability, excellent dielectric strength, reliable thermal shock resistance, and stable mechanical performance. Classified as thermal class F, the system provides strong thermal ageing stability and consistent insulation for demanding electrical components.
The system is particularly suited for pressure-sensitive components such as high-performance electrical insulation parts. It is applied in casting and vacuum casting processes, offering both processing reliability and long-term functional stability.
This casting system provides stable viscosity, controlled pot life, and effective curing behavior. After curing, it achieves good dielectric insulation, resilience against thermal shock, and a balanced combination of mechanical and thermal properties. Its class F thermal rating, low water absorption, and resistance to tracking make it a durable choice for electrical insulation.
| Property | Araldite® CW 2122-1 (Unmixed) | Aradur® HY 2901-2 (Unmixed) | Mixed / Cured System |
|---|---|---|---|
| Appearance | Red-brown viscous liquid | Red liquid | Red-brown casting |
| Specific Gravity (g/cm³) | 1.64 – 1.70 | 1.28 – 1.32 | 1.47 |
| Viscosity at 25°C | 20 – 40 Pa·s | 4000 – 6000 mPa·s | — |
| Mix Ratio (by weight) | 100 | 105 | — |
| Mix Ratio (by volume) | 100 | 135 | — |
| Initial Viscosity at 25°C (mPa·s) | — | — | 6140 |
| Initial Viscosity at 60°C (mPa·s) | — | — | 850 |
| Initial Viscosity at 70°C (mPa·s) | — | — | 660 |
| Pot Life at 60°C (min) | — | — | 260 |
| Pot Life at 70°C (min) | — | — | 135 |
| Gel Time at 60°C (min) | — | — | 500 |
| Gel Time at 80°C (min) | — | — | 125 |
| Gel Time at 100°C (min) | — | — | 35 |
| Minimum Cure Cycle | — | — | 4 h at 70°C + 6 h at 90°C |
| Tensile Strength (MPa) | — | — | 7 |
| Tensile Modulus (MPa) | — | — | 8 |
| Elongation at Break (%) | — | — | 48 |
| Flexural Modulus (MPa) | — | — | 44 |
| Flexural Strength (MPa) | — | — | 2.1 |
| Surface Strain (%) | — | — | 10 |
| Glass Transition Temperature (°C) | — | — | 15 |
| Thermal Conductivity (W/m·K) | — | — | 0.36 |
| Thermal Linear Coefficient (ppm/K) | — | — | 70 (below Tg), 160 (above Tg) |
| Thermal Class | — | — | F |
| Hardness (Shore A / D) | — | — | 94 / 45 |
| Dielectric Constant (50Hz, 25°C) | — | — | 4.5 |
| Dielectric Loss Factor (%) | — | — | 4.7 |
| Volume Resistivity (Ω·cm) | — | — | 1.0 × 10¹⁴ |
| Tracking Resistance (CTI grade) | — | — | > 600 |
| Flammability (UL 94, 1.6 mm) | — | — | V-0 |
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