Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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-Item Name: HumiSeal® UV40-250
-Manufacturer: HumiSeal
-Technologies: Single-component, high solids, UV-curable acrylated polyurethane conformal coating
-Color: Fluoresces under UV light
-Cure Type: UV cure with secondary moisture cure (2-3 days for unexposed areas)
-Package Size: Contact Techniq VN for details.
-Shelf Life: 6 months
HumiSeal® UV40-250 is a single-component, high solids, UV-curable acrylated polyurethane conformal coating designed for excellent chemical resistance, surface hardness, flexibility, and moisture resistance. It becomes tack-free after UV exposure and features a secondary moisture cure mechanism for unexposed areas within 2-3 days. The coating fluoresces under UV light for inspection and complies with UL (E105698), IPC-CC-830, and RoHS Directive 2011/65/EC.
| Property | Value |
|---|---|
| Density | 1.06 g/cm³ |
| Minimum Solids Content | 95% |
| Viscosity (Fed-Std-141, Meth. 4287) | 300 ± 50 centipoise |
| Recommended Coating Thickness | 25 – 125 microns |
| Shelf Life | 6 months at room temperature |
| Recommended Stripper | HumiSeal® Stripper 1100 (Not in EU) |
| Thermal Shock (-65°C to 125°C) | Pass |
| Glass Transition Temperature (Tg) | 26°C |
| Coefficient of Thermal Expansion | Below Tg: 112 ppm/°C Above Tg: 283 ppm/°C |
| Modulus (DMA at -60°C) | 1060 MPa |
| Dielectric Withstand Voltage | >1500V |
| Dielectric Constant (1MHz, 25°C) | 2.41 |
| Dissipation Factor (1MHz, 25°C) | 0.01 |
| Insulation Resistance | 8.0 × 10¹⁴ ohms (800TΩ) |
| Moisture Insulation Resistance | 4.7 × 10¹⁰ ohms (47GΩ) |
| Fungus Resistance (ASTM G21) | Pass |
| Resistance to Chemicals | Excellent |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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