• Item Name: ARALDITE® CW 229 / ARADUR® HW 229-1
• Manufacturer: Huntsman
• Technologies: Epoxy & Epoxy Derivatives, Composite Materials
• Color: Contact Techniq VN for details
• Cure Type: Heat Cure, Casting Resin
• Package Size: Contact Techniq VN for details
• Shelf Life: 1 year (sealed, 2–40°C)
ARALDITE® CW 229 / ARADUR® HW 229-1 is a heat-curing, two-component liquid epoxy casting system with mechanically reinforcing fillers. It produces a resilient polymer with excellent mechanical, electrical, and thermal endurance properties, capable of withstanding thermal cycling and continuous use up to 200°C. The system is ideal for manufacturing medium- and high-voltage electrically insulating components, including SF6-insulated equipment, and is compatible with conventional casting, vacuum casting, and APG processes.
Bushings and dry-type distribution transformers
Electrical components and switchgear
Instrument transformers and insulators
High-voltage insulation and sensors
Stators and switchgear components
Processing via conventional casting, vacuum casting, or APG
| Property | Before Mixed | After Mixed (Cured per Schedule) | Unit | Test Method |
|---|---|---|---|---|
| Tensile strength | – | 11,000–12,500 | psi | ASTM D638 |
| Elongation at break | – | 0.80–1.20 | % | ASTM D638 |
| Tensile modulus | – | 1.50–1.55×10⁶ | psi | ASTM D638 |
| Flexural strength | – | 18,000–19,000 | psi | ASTM D790 |
| Flexural modulus | – | 1.40–1.50×10⁶ | psi | ASTM D790 |
| Hardness | – | 92–96 | Shore D | – |
| Glass transition temperature | – | 110–120 | °C | DSC |
| Coefficient of thermal expansion | – | See Figure 1 | ppm/°C | TMA |
| Water absorption (24h at 23°C) | – | 0.020–0.025 | % | ASTM D570 |
| Thermal conductivity | – | 0.7–0.8 | W/m·K | ISO 8894-2/90 |
| Density | – | 1.81–1.85 | g/cm³ | ASTM D792 |
| Thermal endurance | – | Excellent, up to 200°C | – | UL 746B |
| Critical stress intensity factor (K1C) | – | 2.8–3.0 | MPa·m¹/₂ | Double Torsion Test |
| Specific energy at break (G1C) | – | 740–790 | J/m² | Double Torsion Test |
| Dielectric strength (3 mm) | – | 420–480 | V/mil | IEC 60243 |
| Dielectric constant | – | See Figure 2 | – | IEC 60250 |
| Dissipation factor | – | See Figure 3 | – | IEC 60250 |
| Volume resistivity | – | See Figure 4 | ohm·cm | IEC 60093 |
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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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At Techniq, our mission is to connect cutting-edge materials, processes, and equipment with customer needs, enabling efficiency, reliability, and long-term value creation.
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