Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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LOCTITE® AA 3381 is a medium-viscosity, one-component UV-curable acrylic adhesive designed for high-speed production. It offers flexible bonding with excellent load-bearing and shock absorption. Primarily used for potting and sealing glass-to-metal joints, it is ideal for medical devices and dissimilar rigid substrate bonding. Complies with Henkel’s ISO-10993 protocol for medical applications.
Medical device assembly (ISO 10993 qualified)
Glass to metal bonding
Dissimilar rigid substrate bonding
High-speed production lines
Suitable for sterilization processes (EtO, Gamma, 1x steam autoclave)
3. LOCTITE® AA 3381 – Key Technical Data
| Property | Unmixed/Uncured | After Mixing/Curing (UV @ 100 mW/cm² for 30s) |
|---|---|---|
| Appearance | Translucent colorless liquid | — |
| Specific Gravity @ 25°C | 1.08 | — |
| Viscosity (Spindle 4 @ 20 rpm) | 3,600 – 6,600 mPa·s | — |
| Cure Time (Glass, Zeta® 7200) | ≤15 sec @ 50 mW/cm² | 7 sec @ 100 mW/cm² |
| Shore Hardness (Durometer A) | — | ≥72 |
| Elongation at Break | — | 330% |
| Tensile Strength | — | 7.91 N/mm² (1,135 psi) |
| Tensile Modulus | — | 18.6 N/mm² (2,670 psi) |
| Dielectric Strength | — | 37 kV/mm |
| Surface Resistivity | — | 7.84×10¹⁴ Ω·cm |
| Volume Resistivity | — | 1.06×10¹⁴ Ω·cm |
| Dielectric Constant @ 5–50 GHz | — | 3.32 – 2.96 |
| Dissipation Factor @ 5–50 GHz | — | 0.086 – 0.059 |
| UV Depth of Cure (15 sec, 100 mW/cm²) | — | ≥1.6 mm |
Electric Motor Reliability with Huntsman ARALDITE® Encapsulation Potting – Casting
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