Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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LOCTITE® EA E-20HP is a toughened, medium-viscosity industrial-grade epoxy adhesive with a medium working life. It cures at room temperature to form a tough, off-white bondline with high peel resistance and shear strength. The fully cured epoxy is resistant to a wide range of chemicals and solvents and serves as an excellent electrical insulator.
| Property | Value |
|---|---|
| Before Mixing | |
| Appearance (Resin) | Pale yellow liquid |
| Appearance (Hardener) | Yellow liquid |
| Mix Ratio (by Volume) | 2:1 (Resin: Hardener) |
| Mix Ratio (by Weight) | 100:55 (Resin: Hardener) |
| Viscosity (Resin) | 65,000 mPa·s @ 25°C |
| Viscosity (Hardener) | 7,000 mPa·s @ 25°C |
| Specific Gravity (Resin) | 1.0 |
| Specific Gravity (Hardener) | 1.1 |
| After Mixing | |
| Mixed Appearance | Off-white |
| Working Life (@23°C) | 20 minutes |
| Tack-Free Time | 40 minutes |
| Cured Properties (5 Days @23°C) | |
| Glass Transition Temperature (Tg) | 60°C |
| Shore Hardness (Durometer D) | 80 |
| Elongation at Break | 8% |
| Tensile Strength | 39 N/mm² (5,700 psi) |
| Adhesion Strength (Lap Shear, ISO 4587) | |
| Mild Steel (Grit Blasted) | 22.6 N/mm² (3,270 psi) |
| Aluminum (Acid Etched & Abraded) | 28.2 N/mm² (4,090 psi) |
| Aluminum (Anodized) | 17.4 N/mm² (2,530 psi) |
| Stainless Steel | 22.0 N/mm² (3,190 psi) |
| Polycarbonate | 3.9 N/mm² (560 psi) |
| Nylon | 1.8 N/mm² (260 psi) |
| Wood (Fir) | 11.4 N/mm² (1,660 psi) |
| Block Shear Strength (ISO 13445) | |
| PVC | 7.9 N/mm² (1,140 psi) |
| ABS | 10.4 N/mm² (1,510 psi) |
| Epoxy | 28.6 N/mm² (4,140 psi) |
| Acrylic | 2.0 N/mm² (290 psi) |
| Glass | 32.3 N/mm² (4,690 psi) |
| Electrical Properties | |
| Dielectric Breakdown Strength (IEC 60243-1) | 20 kV/mm |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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