Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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HumiSeal® 1B51NSLU is a fast-drying, single-component synthetic rubber conformal coating with extremely low moisture vapor permeability. It contains methylcyclohexane solvent, making it more environmentally friendly than traditional solvents. The coating is highly flexible, applies with low stress on components, fluoresces under UV for inspection, and is easily repairable. It is RoHS-compliant (Directive 2002/95/EC).
| Property | Value | Test Method |
|---|---|---|
| Density | 0.81 ± 0.02 g/cm³ | ASTM D1475 |
| Solids Content | 22 ± 2% | Fed-Std-141, Meth. 4044 |
| Viscosity | 185 ± 30 cP | Fed-Std-141, Meth. 4287 |
| VOC Content | 632 g/L | – |
| Shelf Life | 18 months | – |
| Property | Value | Test Method |
|---|---|---|
| Drying Time (Handle) | 10 min | Fed-Std-141, Meth. 4061 |
| Recommended Coating Thickness | 25 – 75 µm | – |
| Recommended Curing | 24 hrs @ RT or 30 min @ 76°C | – |
| Time for Optimum Properties | 7 days | – |
| Thermal Shock Resistance | -65°C to 125°C (50 cycles) | MIL-I-46058C |
| Glass Transition Temperature | 14°C | DSC |
| Coefficient of Thermal Expansion | 55 ppm/°C | TMA |
| Dielectric Breakdown Voltage | 4900V | ASTM D149 |
| Dielectric Constant (1MHz, 25°C) | 2.5 | ASTM D150-98 |
| Dissipation Factor (1MHz, 25°C) | 0.07 | ASTM D150-98 |
| Insulation Resistance | 2.0 × 10¹⁴ Ω | MIL-I-46058C |
| Moisture Insulation Resistance | 1.0 × 10¹⁰ Ω | MIL-I-46058C |
| Moisture Vapor Transmission | <1 g/m²•day•mil | ASTM E398-03 |
| Fungus Resistance | Passes | ASTM G21 |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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