• Item Name: ARALDITE® CW 229-3 / ARADUR® HW 229-1
• Manufacturer: Huntsman
• Technologies: Epoxy & Epoxy Derivatives, Composite Materials
• Color: Brown
• Cure Type: Heat Cure, Casting Resin
• Package Size: Contact Techniq VN for details
• Shelf Life: Corresponds to label expiry; store dry, sealed containers
ARALDITE® CW 229-3 / ARADUR® HW 229-1 is a brown, liquid, two-component epoxy casting system designed for hot curing. Prefilled with slightly abrasive, mechanically reinforcing wollastonite fillers, it offers excellent crack resistance, high mechanical and electrical performance, low thermal expansion, and strong thermal shock resistance. This system is suitable for encapsulating large metal parts and is recognized under UL 746B for service up to 200°C. The resin exhibits moderate reactivity and long pot-life under controlled conditions.
Electrical Insulation Components: Bushings, dry type distribution transformers, instrument transformers, switchgear components, insulators.
Industrial & Utilities: Power, water, and utility equipment requiring electrical protection.
Automotive & Electronics: Electrical parts, switches, relays, wire jacketing, and insulation.
Processing Methods: Automatic Pressure Gelation (APG), vacuum pressure casting.
Cure Method: Heat cure, with demoulding times and minimal postcure depending on process and temperature.
| Property | Test Method | Unit | Before Mixing | After Mixing / Cured |
|---|---|---|---|---|
| Tensile strength | ISO 527 | MPa | – | 80–90 |
| Elongation at break | ISO 527 | % | – | 1.3–1.5 |
| E modulus (tensile) | ISO 527 | MPa | – | 10,000–11,000 |
| Flexural strength | ISO 178 | MPa | – | 120–130 |
| Flexural strength @ 80°C | ISO 178 | MPa | – | 100–110 |
| Compressive strength | ISO 604 | MPa | – | 170–190 |
| Impact strength | ISO 179 | kJ/m² | – | 9–11 |
| Glass transition temperature | ISO 11357-2 | °C | – | 110–125 |
| Coefficient of linear thermal expansion | ISO 11359-2 | K⁻¹ | – | 27–30 ×10⁻⁶ |
| Thermal conductivity | ISO 8894-1 | W/mK | – | 0.65–0.75 |
| Water absorption (23°C, 10 days) | ISO 62 | % | – | 0.10–0.20 |
| Density (61% filler) | ISO 1183 | g/cm³ | – | 1.80–1.90 |
| Crack resistance | CEI 60020-37 | – | – | No cracks to -80°C |
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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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