Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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LOCTITE® AA 3961™ is a light-curing acrylic adhesive designed for rigid bonding applications, offering:
| Property | Value |
|---|---|
| Specific Gravity @ 25°C | ~1.02 |
| Viscosity @ 25°C (mPa·s) | 40 – 120 |
| Fluorescence | Positive under UV light |
| Stress Cracking Resistance (ASTM D 3929) | 1-60 min (depending on stress level) |
| Property | Value |
|---|---|
| Fixture Time @ 405 nm (10 mW/cm²) | ≤5 sec |
| Tack-Free Time @ 1400 mW/cm² | ≤5 sec |
| Depth of Cure @ 405 nm (1400mW/cm²) | ~10mm in 30 sec |
| Property | Value |
|---|---|
| Shore Hardness (D) | 75 |
| Tensile Strength (ISO 527-3) | 28 N/mm² (4,050 psi) |
| Tensile Modulus (ISO 527-3) | 1,250 N/mm² (181,000 psi) |
| Elongation @ Break | 4.5% |
| Glass Transition Temp. (Tg) | 49.5°C |
| Dielectric Strength | ~30.3 kV/mm |
| Water Absorption (100°C, 2 hrs) | 5.9% |
| Substrate | Shear Strength (N/mm²) |
|---|---|
| Polycarbonate to PVC | 22.1 (3,200 psi) |
| Polycarbonate to Stainless Steel | 4.9 (708 psi) |
| Polycarbonate to Aluminum | 7.3 (1,065 psi) |
| Acrylic | 4.5 (655 psi) |
| HDPE (treated) | 7.1 (1,040 psi) |
| Condition | Strength Retention (%) |
|---|---|
| Heat Aging (1000 hrs @ 80°C) | ~85% |
| Water Immersion (100°C, 2 hrs) | 78% |
| Isopropanol Exposure (24 hrs) | 90% |
| Sterilization (Gamma, Autoclave, EtO) | Pass |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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