Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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Item Name: Dow Corning® LDC 2577 D
Manufacturer: Dow Corning
Technologies: One-part RTV silicone resin
Color: Translucent, Yellow-green
Cure Type: Room temperature cure (moisture-activated) or heat cure
Package Size: 1 kg Bottle
Shelf Life: 6 months
Dow Corning® LDC 2577 D is a one-part, RTV silicone resin conformal coating designed for electrical and electronic assemblies. It provides excellent dielectric strength, flame resistance, flexibility across a wide temperature range, and enhanced moisture resistance. The material cures at room temperature upon exposure to atmospheric moisture, with optional accelerated heat cure. The coating is UV-detectable, easily repairable, and offers transparent protection suitable for both standard and solar applications.
Protective coating for rigid and flexible PCBs.
Thick film circuitry requiring high dielectric properties.
Impregnation of porous materials (e.g., ceramics) to improve moisture resistance.
Electronic devices exposed to broad thermal cycling (–65 to 200 °C).
Environments requiring easy inspection and repairability.
| Property | Unit | Value |
|---|---|---|
| Still Not Mixed (As Supplied) | ||
| Appearance | – | Translucent, yellow-green |
| Nonvolatile Content | % | 61 |
| Viscosity @ 25 °C | cps | 175 |
| Tack-Free Time | min | 50 |
| After Cured | ||
| Hardness | Shore D | 30 |
| Tensile Strength | psi | 300 |
| Elongation | % | 30 |
| Dielectric Strength | volts/mil | 1100 |
| Dielectric Constant @ 100 Hz | – | 2.54 |
| Dielectric Constant @ 100 kHz | – | 2.51 |
| Dissipation Factor @ 100 Hz | – | 0.00220 |
| Dissipation Factor @ 100 kHz | – | 0.00097 |
| Volume Resistivity | ohm·cm | 1.0 × 10¹³ |
| Usable Temperature Range | °C | –65 to 200 |
| Cure Time (0.5 mm, RT) | min | ~70 (40 min with DC-176 additive) |
| Heat Cure | – | 15 min RT + 10 min at 70–80 °C |
| Shelf Life | months | 6 (≤25 °C, unopened) |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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