
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
HumiSeal® 1A68 is a single-component polyurethane conformal coating designed for general PCB applications. It is free from isocyanates, fluoresces under UV light for inspection, and meets IPC-CC-830 and RoHS Directive 2002/95/EC compliance. It is also UL recognized under File Number E105698.
Property | Value | Test Standard |
---|---|---|
Density | 0.95 ± 0.02 g/cm³ | ASTM D1475 |
Solids Content | 44 ± 2 % | Fed-Std-141, Meth. 4044 |
Viscosity | 180 ± 20 centipoise | Fed-Std-141, Meth. 4287 |
VOC | 521 g/L | – |
Recommended Coating Thickness | 25 – 75 microns | – |
Drying Time to Handle | 15 minutes | Fed-Std-141, Meth. 4061 |
Curing Time | 30 days (RT), 30h @ 76°C, 20h @ 88°C | – |
Thermal Shock | -65°C to 125°C | MIL-I-46058C |
Coefficient of Thermal Expansion (TMA) | 193 ppm/°C | – |
Glass Transition Temperature (Tg) | 26°C | DSC |
Modulus | 27.2 MPa | DMA |
Flammability | V-0 | UL 94 |
Dielectric Withstand Voltage | >1500 volts | MIL-I-46058C |
Dielectric Breakdown Voltage | 7500 volts | ASTM D149 |
Dielectric Constant (1MHz, 25°C) | 3.6 | ASTM D150-98 |
Dissipation Factor (1MHz, 25°C) | 0.03 | ASTM D150-98 |
Insulation Resistance | 2.0 x 10¹⁴ ohms (200TΩ) | MIL-I-46058C |
Moisture Insulation Resistance | 1.6 x 10¹⁰ ohms (16GΩ) | MIL-I-46058C |
CTI (Comparative Tracking Index) | 0 PLC (600V) | UL746E |
Fungus Resistance | Passes | ASTM G21 |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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