Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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LOCTITE® EA 9464 is a two-part epoxy adhesive with a 1:1 mix ratio (by volume and weight). It offers fast handling strength, non-sag resistance, and good shear and peel strength. This adhesive is a faster curing version of LOCTITE® EA 9461, reducing fixture time and pot life by approximately 50% while maintaining similar performance.
| Property | Resin | Hardener | Mixed |
|---|---|---|---|
| Appearance | White opaque paste | Black opaque paste | Gray opaque paste |
| Specific Gravity @ 25°C | 1.35 | 1.3 | – |
| Viscosity @ 10 s⁻¹ (mPa·s) | 138,000 | 55,000 | – |
| Viscosity @ 100 s⁻¹ (mPa·s) | 40,000 | 35,000 | – |
| Thixotropic Index | 3.5 | 1.6 | – |
| Pot Life (100 g mass @ 22°C) | – | – | 15-20 min |
| Property | Value |
| Shore Hardness (Durometer D) | 80 |
| Glass Transition Temperature (°C) | 50 |
| Compressive Strength (N/mm²) | 50 (7,300 psi) |
| Tensile Modulus (N/mm²) | 2,900 (420,610 psi) |
| Coefficient of Thermal Conductivity (W/m-K) | 0.6 |
| Surface Resistivity (Ω) | 1.7×10¹⁵ |
| Volume Resistivity (Ω·cm) | 5.8×10¹⁴ |
| Substrate | Strength (N/mm²) | Strength (psi) |
| Mild Steel (grit blasted) | 22 | 3,200 |
| Aluminum (abraded) | 18 | 2,600 |
| Stainless Steel | 18 | 2,600 |
| Brass | 9 | 1,300 |
| Zinc Dichromate | 15 | 2,200 |
| Polycarbonate | 4 | 550 |
| ABS | 5 | 700 |
| GRP (Polyester resin matrix) | 5 | 680 |
| Condition | 500 h | 1,000 h | 3,000 h |
| 50°C | 150% | 115% | 140% |
| 80°C | 130% | 125% | 145% |
| 100°C | 125% | 130% | 135% |
| 120°C | 130% | 135% | 135% |
| 150°C | 150% | 140% | 140% |
| Environment | 500 h | 1,000 h | 3,000 h |
| Motor oil | 100% | 100% | 100% |
| Unleaded gasoline | 95% | 75% | 60% |
| Water/glycol 50/50 | 60% | 60% | 50% |
| Sodium hydroxide 4% | 50% | 55% | 50% |
| 98% RH (40°C) | 65% | 50% | 45% |
| Acetone | 85% | 35% | 15% |
| Acetic acid 10% | 80% | 70% | 45% |
| Saltwater 7.5% | 90% | 85% | 80% |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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