Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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Item Name: WEVOPOX 8260 FL
Manufacturer: WEVO-CHEMIE GmbH
Technologies: Solvent-free epoxy resin with mineral fillers, elastified system, self-extinguishing, halogen-free
Color: Resin – Yellowish; Hardener – Red or as requested
Cure Type: Heat curing (60–110°C, 1–4 hours depending on layer thickness)
Package Size: 10 kg, 30 kg buckets; 250 kg drums
Shelf Life: 12 months
This is a solvent-free epoxide casting resin with excellent thermal conductivity and resistance, containing mineral fillers that provide self-extinguishing properties. It is halogen-free and exhibits low shrinkage during polymerization due to high filler content. The system is elastified, performing well in thermal cycling, and has been UL94V-0 tested at 6 mm thickness with a generic thermal index (RTI) of 90°C.
Electro casting with WEVOPOX 8260 FL and WEVODUR 1018/25.
Used in adhesives and casting for electrical and electronic components requiring thermal resistance and dimensional stability.
| Property | WEVOPOX 8260 FL (Before Mixing) | WEVODUR 1018/25 (Before Mixing) | Mixture (After Mixing) |
|---|---|---|---|
| Colour | Yellowish | Red or as requested | – |
| Viscosity (22°C) | 30,000 mPa·s | 50,000 mPa·s | 2,000–3,000 mPa·s |
| Viscosity (60°C) | 200 mPa·s | 800 mPa·s | 100–400 mPa·s |
| Density (g/cm³) | 1.14 | 1.65 | 1.24–1.75 |
| Pot life (250 g) | – | – | ~4 hours at 60°C |
| Curing time | – | – | 60 min at 80°C; 2–4 h at 110°C |
| Shore D hardness | – | – | 84–88 |
| Tensile strength | – | – | 50 N/mm² |
| Elongation at break | – | – | 1 % |
| Modulus of elasticity | – | – | 7,400 N/mm² |
| Thermal conductivity | – | – | 0.94 W/m·K |
| Coefficient of thermal expansion | – | – | 61 ppm/K (before Tg), 143 ppm/K (after Tg) |
| Glass transition temp | – | – | ~90°C |
| Shrinkage after curing | – | – | <0.15 % (30 days immersion) |
| Water absorption | – | – | 0.15 % |
| Flammability | – | – | UL 94 V-0 at 6 mm |
| Dielectric strength | – | – | 30 kV/mm |
| Volume resistance | – | – | 10⁸ Ω·cm |
| Comparative tracking index | – | – | CTI 600 |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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