• Item Name: ARALDITE® CW 5742 / ARADUR® HY 5726
• Manufacturer: Huntsman
• Technologies: Epoxy & Epoxy Derivatives
• Color: Black
• Cure Type: Heat Cure
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Resin 12 months, Hardener 24 months
ARALDITE® CW 5742 / ARADUR® HY 5726 is a prefilled, anhydride-based, heat-curing casting resin system designed for high-performance encapsulation. It offers excellent thermal endurance, very good thermal shock resistance, and superior chemical resistance. The system ensures good flow, gap filling, and impregnation, with a high glass transition temperature and low thermal expansion, making it ideal for demanding applications in automotive and electrical components.
Complete encapsulation of car ignition coils
Rotors and stators
Automotive & transportation components requiring high thermal and chemical endurance
Suitable for casting, vacuum casting, gravity casting, and automatic pressure gelation (APG) 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’ (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) | – | 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) | – | 39.5 – 40.5 |
| Dielectric constant εr | – | 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 |
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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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