Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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• Item Name: Bectron® PK 4340
• Manufacturer: ELANTAS Beck GmbH
• Technologies: One-component polyurethane resin system (thermal cure, thixotropic properties)
• Color: Not specified
• Cure Type: Thermal cure (80°C for 60 min, 90°C for 30 min, <1 min with IR)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 6 months
Bectron® PK 4340 is a one-component polyurethane resin system designed for electronic protection. It cures into a soft, elastic duroplastic with excellent thixotropic behavior, vibration resistance, and environmental compatibility. Unlike conventional two-component resins, it is ready-to-use, provides strong adhesion to various electronic substrates, and is RoHS compliant.
Vibration protection for delicate electronic components.
Partial or selective coating of SMDs, PCB assemblies, and ceramic substrates.
Dam-and-fill applications: can be used as a dam for higher-viscosity barriers around areas later filled with lower-viscosity resins (e.g., PK 4342).
Particularly useful in automotive electronics due to strong chemical and thermal resistance.
| Property | Condition | Value | Unit |
|---|---|---|---|
| Viscosity (DIN 53019) | D=15 s⁻¹, 23°C | 9,500 ± 1,500 | mPa·s |
| Density (DIN EN ISO 2811-2) | 23°C | 1.23 ± 0.02 | g/cm³ |
| Shelf life | 23°C | 6 | months |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Gel-time | 80°C | 5 ± 2 | min |
| Curing time | 80°C | 65 ± 5 | min |
| Curing time | 90°C | 30 ± 5 | min |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Coefficient of thermal expansion (Beck Test M 56) | -20°C to +90°C | 200 × 10⁻⁶ | K⁻¹ |
| Thermal conductivity (DIN 52616) | 23°C | 0.18 ± 0.02 | W/m·K |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Glass transition temperature (IEC 61006) | – | -50 | °C |
| Shore hardness (ISO 868) | 23°C | 70 ± 10 | Shore A |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Volume resistivity (IEC 60455-2) | Initial | 10¹³ | Ω·cm |
| Volume resistivity (IEC 60455-2) | After 7 days water immersion | 10¹¹ | Ω·cm |
| Dielectric strength (IEC 60455-2) | 23°C | 22 | kV/mm |
| Tracking resistance (IEC 60112, Solution B) | CTI | 600 | – |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Water absorption (ISO 62, Method 1) | 24h / 23°C | 131 | mg |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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