Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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• Item Name: Elan-tron® PU 4254 LV / PH 4900
• Manufacturer: ELANTAS Beck GmbH
• Technologies: Two-component, semi-rigid polyurethane, low viscosity, Class B insulation
• Color: Resin – Black; Hardener – Brown transparent
• Cure Type: Room temperature (6–8 h) or accelerated at 90°C (1–1.5 h)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 6 months
Elan-tron® PU 4254 LV is a semi-rigid, low-viscosity polyurethane system designed for electrical insulation. When mixed with Elan-tron® PH 4900 in a 100:33 ratio, it cures to a tough casting compound with good dielectric performance, low shrinkage, and chemical resistance. The material offers excellent adhesion, low water uptake, and durability against oils, fuels, and hydrolysis. Classified as Insulation Class B (130°C), it is compliant with RoHS requirements and can be processed by hand or with mixing/dosing equipment.
Hand and machine casting of small to medium transformers.
Potting of underwater or garden pumps (due to hydrolysis resistance).
Encapsulation of components requiring good chemical and oil resistance.
| Property | Conditions | Resin (PU 4254 LV) | Hardener (PH 4900) | After Mixed & Cured |
|---|---|---|---|---|
| Colour | — | Black | Brown-transparent | Black, medium-hard |
| Viscosity | 25°C | 1200 ± 200 mPa·s | 110 ± 30 mPa·s | 700 mPa·s |
| Density | 20°C | 1.32 ± 0.05 g/cm³ | 1.23 ± 0.05 g/cm³ | 1.30 ± 0.02 g/cm³ |
| Shelf Life | 23°C | 6 months | 6 months | — |
| Mixing Ratio | — | — | — | 100:33 (w/w) |
| Pot Life | 23°C, 15 ml | — | — | ~90 min |
| Curing | — | — | — | 6–8 h RT or 1–1.5 h at 90°C; post-cure 80°C / 12–16 h |
| Glass Transition Temp (Tg) | IEC 61006 | — | — | ~30°C |
| Thermal Index | IEC 216 | — | — | 139°C (flexural strength) |
| Thermal Conductivity | DIN 52613 | — | — | 0.35 W/m·K |
| Hardness | ISO 868 | — | — | 75 ± 5 Shore D |
| Tensile Strength | ISO 527-1 | — | — | 28.9 MPa |
| Tensile Modulus | ISO 527-1 | — | — | 1370 MPa |
| Elongation at Break | ISO 527-1 | — | — | 16 % |
| Dielectric Strength | IEC 60250 | — | — | 25 kV/mm (dry, 23°C) |
| Volume Resistivity | IEC 60455 | — | — | 1 × 10¹⁵ Ω·cm (23°C) |
| Dielectric Constant | IEC 60250 | — | — | 3.8 (23°C, 50 Hz) |
| Dissipation Factor (tan δ) | IEC 60250 | — | — | 0.02 (50 Hz, 23°C) |
| Tracking Resistance | IEC 60112 | — | — | 600 CTI |
| Water Absorption | ISO 62 | — | — | 0.25 % (24h, RT) |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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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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