Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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• Item Name: WEVO-Casting Resin PD 52
• Manufacturer: WEVO-CHEMIE GmbH
• Technologies: Two-component polyurethane with mineral fillers, excellent chemical resistance and low dielectric constant
• Color: Yellowish
• Cure Type: Ambient temperature curing, final hardness in 14 days
• Package Size: 5 kg, 10 kg, 30 kg buckets and 250 kg drums
• Shelf Life: 6 months
WEVO-Casting Resin PD 52 is a two-component polyurethane encapsulating system formulated with mineral fillers. It combines high flexibility with excellent chemical resistance against acids and alkalis, while maintaining superior low-temperature performance. The system provides strong adhesion to plastics, metals, and glass, alongside a stable dielectric constant across a wide frequency and temperature range. Its service temperature extends from -60°C to +125°C. The resin is processed with WEVO-Hardener 385, and curing can be accelerated as required.
Encapsulation and coating of pressure-sensitive electrical and electronic components.
Specifically used for sensors and SMD-equipped printed circuit boards.
Suitable for environments requiring chemical resistance, electrical insulation, and dimensional stability.
| Property | Still not mixed (Resin PD 52 / Hardener 385) | After mixed |
|---|---|---|
| Viscosity (22°C) | Resin: 7,000–9,000 mPa·s / Hardener: 15–35 mPa·s | 1,200–2,000 mPa·s |
| Density (22°C) | Resin: 1.06–1.09 g/cm³ / Hardener: 1.20–1.24 g/cm³ | ~1.20–1.24 g/cm³ |
| Mixing ratio (by weight) | 100 parts resin : 26 parts hardener | — |
| Pot life (200 g at RT) | — | 35–40 min |
| Curing time | — | 2–8 h at RT; final hardness after 14 days |
| Color | Resin: yellowish / Hardener: black or per request | Yellowish to black |
| Hardness (Shore A) | — | 75–80 |
| Tensile strength | — | 9 N/mm² |
| Elongation at break | — | 210% |
| Thermal conductivity | — | 0.3 W/m·K |
| Coefficient of thermal expansion | — | 65–175 ppm/K |
| Glass transition temperature | — | < -70°C |
| Volume resistivity | — | > 10¹⁶ Ω·cm |
| Dielectric strength | — | 23 kV/mm |
| Dielectric constant ε | — | 2.95–3.0 (50 Hz, 23°C) |
| Dissipation factor tan δ | — | 0.06–0.08 |
| Flammability classification | — | UL94 HB |
| CTI | — | 600 (IEC 60112) |
| Water absorption (30 days) | — | 0.5–0.6 % |
| Shrinkage after curing | — | 0.5 % |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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