• Item Name: ARALDITE® CW 5742 / ARADUR® HY 5726-2
• Manufacturer: Huntsman
• Technologies: Epoxy & Epoxy Derivatives
• Color: Black
• Cure Type: Heat Cure (12 hr @ 23°C + 3 hr @ 95°C)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Contact to Techniq VN for details.
ARALDITE® CW 5742 / ARADUR® HY 5726-2 is a high-performance epoxy-based casting resin system designed for automotive ignition coils and stators. It provides excellent thermal endurance, thermal shock resistance, and good impregnation capability. This ready-to-use system ensures reliable electrical insulation and mechanical performance for demanding automotive applications.
Car ignition coil connectors
Stators
Automotive components requiring thermal resistance and shock tolerance
Suitable for casting and vacuum casting processes
| Property | Before Mixing | After Mixing / Cured |
|---|---|---|
| Color | Black | Black |
| Density (g/cm³) | – | 1.70 – 1.72 |
| Glass transition temperature (°C) | – | 200 – 230 |
| Thermal class | – | N |
| Modulus in torsion G’ at 25°C (MPa) | – | 4,250 – 4,350 |
| Flexural strength (MPa) | – | 79.5 – 80.5 |
| Flexural modulus (MPa) | – | 6,900 – 7,100 |
| Flexural elongation (%) | – | 1.15 – 1.25 |
| Tensile strength (MPa) | – | 37.5 – 38.5 |
| Tensile modulus (MPa) | – | 7,900 – 8,100 |
| Elongation at break (%) | – | 0.45 – 0.55 |
| Critical stress intensity factor (K1c, MPa·m¹/²) | – | 1.8 – 1.9 |
| Specific energy at break (G1c, J/m²) | – | 425 – 435 |
| Coefficient of thermal expansion (ppm/K) | – | 38 – 42 |
| Thermal conductivity (W/m·K) | – | 0.6 – 0.7 |
| Hardness Shore D | – | 89 – 91 |
| Water absorption, 10d/23°C (%) | – | 0.40 – 0.50 |
| Water absorption, 30min/100°C (%) | – | 0.11 – 0.13 |
| Dielectric strength (kV/mm, 1 mm) | – | 39.5 – 40.5 |
| Dielectric constant εr at 50Hz | – | 4.55 – 4.65 |
| Dissipation factor tan δ (%) | – | 1.5 – 2.5 |
| Volume resistivity (Ω·cm) | – | 1×10¹⁵ |
| Tracking resistance (CTI) | – | > 600 |
| Electrolytic corrosion | – | Grade A-1 |
Standard Cure Cycle: 2 h at 80°C + 1 h at 120°C + 2 h at 200°C
Mix Ratio (Hardener:Resin, W%): 0.33
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Techniq Vietnam provides end-to-end materials and process solutions, integrating world-class technologies in adhesives, soldering, and thermal management.
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