Emerging Trends in High-Performance Encapsulation
In the fast-evolving world of power electronics and motor systems, demand is surging for encapsulation solutions that not only exhibit exceptional thermal conductivity, but also offer robust resistance to extreme thermal shock. As industries strive to optimise thermal management while maintaining long-term reliability, epoxy-based materials are emerging as key enablers in achieving these goals.
✨ Product Spotlight: Araldite® CW 30334 CI / Aradur® HW 30335 CI
This two-component, prefilled, liquid hot-curing epoxy casting system is engineered to meet the most demanding encapsulation requirements for motor stators, transformer coils, and high-voltage devices exposed to thermal cycling from -40°C to 180°C.
✨Key Features and Advantages:
✅ Outstanding Thermal Conductivity: 1.1–1.2 W/mK ensures efficient heat dissipation
✅ High Thermal Shock Resistance: Proven reliability through -40°C to +180°C cycling
✅ Excellent Gap-Filling Ability: Ensures void-free encapsulation even in complex geometries
✅ Superior Mechanical Strength: Tensile strength up to 80 MPa, flexural strength up to 130 MPa
✅ High Electrical Insulation: Volume resistivity up to 1.55×10¹⁵ Ω·cm, breakdown strength 26 kV/mm
✅ Chemical Resistance: Outstanding resistance to ATF and moisture (≤0.10% water absorption)
✨Processing Flexibility
Compatible with vacuum casting and vacuum potting, the system cures effectively at 130°C, making it suitable for both low- and high-volume industrial applications. It is also ideal for applications where dimensional stability, mechanical robustness, and thermal interface integrity are essential.
🎯 Applications:
– Electric motor encapsulation (e.g., EV stators)
– Transformer coil protection
– High-voltage module potting
– Automotive power electronics
