
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
HumiSeal® 1A27 is a single-component polyurethane conformal coating designed for printed circuit boards. It is free of isocyanates, RoHS compliant, and UL recognized (File No. E105698).
Property | Value |
---|---|
Density (ASTM D1475) | 0.96 ± 0.02 g/cm³ |
Solids Content | 50 ± 3% |
Viscosity | 3000 ± 1000 cP |
VOC | 480 g/L |
Recommended Coating Thickness | 25 – 75 µm |
Drying Time to Handle | 30 min |
Full Cure Options | 30 days @ RT, 30 hrs @ 76°C, 20 hrs @ 88°C |
Thermal Shock Resistance | -65°C to 125°C |
CTE (TMA) | 170 ppm/°C |
Glass Transition Temperature (Tg) | 28°C |
Modulus (DMA) | 18.1 MPa |
Flammability (UL 94) | V-0 |
Dielectric Withstand Voltage | >1500 V |
Dielectric Breakdown Voltage | 7500 V |
Dielectric Constant (1MHz, 25°C) | 3.6 |
Dissipation Factor (1MHz, 25°C) | 0.02 |
Insulation Resistance | 2.0 x 10¹⁴ Ω (200TΩ) |
Moisture Insulation Resistance | 1.2 x 10¹⁰ Ω (12GΩ) |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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