Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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Item Name: THERMELT® 858 Black
Manufacturer: Bostik S.A.
Technologies: Polyamide hot melt resin, non-reactive
Color: Black
Cure Type: Contact to Techniq VN for details.
Package Size: Contact to Techniq VN for details.
Shelf Life: 18 months
Thermelt® 858 Black is a pure copolyamide, non-reactive hot melt resin designed for low-pressure molding applications. It features:
Enhanced UV resistance compared to standard PA
Good resistance to harsh environments (%HR, °C)
High hardness and cohesion
UL 94 V0 flammability rating
Primarily used for:
Molding of electronic and electrical components
Connectors
Cables
| Property | Value | Test Standard |
|---|---|---|
| Viscosity (220°C, SC4-S27, 50 RPM) [Pa.s] | 4.7 | ASTM D3236 |
| Softening Point (Cup & Ball) [°C] | 182 | ASTM D3461 |
| Water Content [%] | <0.2 | Bostik |
| Hardness (23°C, 15s) [Shore D] | 32 | ISO 868 |
| Density | ~1 | Internal test |
| Water Absorption (7 days, 23°C) [%] | 1.8 | ISO 62 |
| Glass Transition (DSC) [°C] | -30 | Bostik |
| Flammability | V0 | UL 94 |
| Colour | Black | – |
| Commercial Shape | Pellets | – |
| Property | Value | Test Standard |
|---|---|---|
| Max Stress (50 mm/min, 23°C) [MPa] | >7 | ISO 527 |
| Elongation at Break (50 mm/min, 23°C) [%] | >300 | ISO 527 |
| Young’s Modulus (50 mm/min, 23°C) [MPa] | 90 | ISO 527 |
| Property | Value | Test Standard |
|---|---|---|
| Transversal Resistivity (500V) [Ω·cm] | 1.4×10¹¹ | IEC 62631-3 |
| Dielectric Rigidity (23°C) [kV/mm] | 19 | IEC 60243-1 |
| Relative Permittivity (50Hz, 23°C) [F/m] | 5.6 | IEC 62631-2 |
| Relative Permittivity (1kHz, 23°C) [F/m] | – | IEC 62631-2 |
| Relative Permittivity (1MHz, 23°C) [F/m] | 3.5 | ASTM D150 |
| Relative Permittivity (1GHz, 23°C) [F/m] | 2.7 | ASTM D150 |
| Relative Permittivity (5GHz, 23°C) [F/m] | 2.5 | ASTM D2520 |
| Parameter | Recommended Value |
|---|---|
| Melt Temperature Range [°C] | 210 – 230 |
| Mold Temperature Range [°C] | 20 – 60 |
| Drying Time (Air oven, thin layer) [h] | 6 |
| Drying Temperature [°C] | 80 |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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