Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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LOCTITE® 272™ is a high-strength, anaerobic threadlocker designed for the permanent locking and sealing of large threaded fasteners (M25 and larger). It prevents loosening and leakage due to shock and vibration. The product cures in the absence of air between close-fitting metal surfaces and can be accelerated using an activator.
| Property | Value |
|---|---|
| Uncured Properties | |
| Chemical Type | Dimethacrylate ester |
| Appearance | Red-orange liquid |
| Viscosity (25°C) | 4,000 to 15,000 mPa·s |
| Specific Gravity | 1.11 |
| Cure Type | Anaerobic |
| Secondary Cure | Activator |
| Strength | High |
| Cured Properties | |
| Breakaway Torque (M10 Steel) | 23 N·m (200 lb·in) |
| Prevail Torque (M10 Steel) | 25 N·m (220 lb·in) |
| Compressive Shear Strength (Steel Pins & Collars) | ≥14.5 N/mm² (2,102 psi) |
| Compressive Shear Strength (after 72h @ 200°C) | ≥20 N/mm² (2,900 psi) |
| Coefficient of Thermal Expansion | 80 × 10⁻⁶ K⁻¹ |
| Thermal Conductivity | 0.1 W/(m·K) |
| Specific Heat | 0.3 kJ/(kg·K) |
| Environmental Resistance | |
| Strength Retention in Air (after 720h @ 87°C) | 100% |
| Strength Retention in Motor Oil | 62% |
| Strength Retention in Gasoline | 62% |
| Strength Retention in Water | 58% |
| Strength Retention in Phosphate Ester | 70% |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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