
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
LOCTITE HHD 4042 is a dual-cure epoxy/acrylate adhesive designed for electronic component assembly. It initially cures with UV light and achieves maximum performance with a secondary heat cure.
Property | Value |
---|---|
Uncured Properties | |
Appearance | Light yellow paste |
Viscosity @ 25°C (Spindle 52, 0.5 rpm) | 125,000 mPa·s (cP) |
Specific Gravity @ 25°C | 1.63 |
Pot Life @ 25°C (away from light) | 8 days |
Curing Performance | |
UV Wavelength Range | 300-500 nm |
UV Tack-Free Time | <6 seconds |
Heat Cure Schedule | 1 hour @ 120°C |
Cured Properties | |
Glass Transition Temperature (Tg) | 145°C |
Coefficient of Thermal Expansion (α1) | 45.38×10⁻⁶ cm/cm/°C |
Coefficient of Thermal Expansion (α2) | 138.73×10⁻⁶ cm/cm/°C |
Volume Shrinkage on Cure | 3.1% |
Mechanical Performance | |
Lap Shear Strength (Steel) | 21 N/mm² (3,045 psi) |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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