Power Electronics

Power Electronics

Power Electronics are critical components of all electrified vehicles. Encapsulation technology can substantially improve the performance, efficiency and cost of these devices. Huntsman offers casting and impregnating resin systems for inverters, converters, electronic control units, wire harnesses, connectors, sensors and switches.

Epoxy Encapsulation and Impregnation of Power Electronics

Huntsman offers a wide range of heat-conductive encapsulants under our trusted ARALDITE® brand for all the electronic parts in the electrified powertrain. Huntsman’s encapsulants protect sensitive devices, improve thermal management and meet the most stringent temperature resistance requirements.

Araldite® CW 30386 /
Aradur® HW 30387

Glass transition temperature (Tg):
200°C

Thermal conductivity:
0.6 W/(m.K)

Suitable for:

  • Vacuum Casting
  • Atmospheric Casting 
  • Automatic Pressure Gelation

Developed for rotor potting. Very low CTE, highest modulus and strength between -40°C and + 180°C. Very good intra-coil impregnation, high Tg. Outstanding resistance at elevated temperatures and high rotation speed.

Araldite® CW 5742 /
Aradur® HY 5726

Glass transition temperature (Tg):
210°C

Thermal conductivity:
0.7 W/(m.K) 

Suitable for: 

  • Vacuum Casting 
  • Automatic Pressure Gelation

Superior flow and gap filling capabilities enabling fast processing times. High Tg enabling low thermal expansion within the complete operation range. Very high thermal and chemical endurance (Class N).

Araldite® CW 1302 /
Aradur® HY 1300

Glass transition temperature (Tg):
75°C

Thermal conductivity:
0.9 W/(m.K)

Suitable for:

  • Vacuum Casting

Good heat conductivity and thermal endurance (Class H). Flammability certification UL 94 V-0 (3.0 mm) and HB (1.5 mm).

Araldite® CW 1195 /
Aradur® HW 1196

Glass transition temperature (Tg):
140°C

Thermal conductivity:
0.7 W/(m.K)

Suitable for:

  • Vacuum Casting
  • Automatic Pressure Gelation

Fast fill and cure times enabling fast processing. Low coefficient of thermal expansion (28·10-6 1/K). Flammability certification UL 94 V-0 (6.0 mm) and thermal endurance (Class H).

Arathane® CW 33664 /
Arathane® HY 33665

Glass transition temperature (Tg):
-40°C

Thermal conductivity:
1.0 W/(m.K)

Suitable for:

  • Atmospheric Casting
  • Injection

Polyurethane, flame retardant and halogen free system for processing and curing at room temperature. High flexibility and low modulus, improving battery crash-safety within the entire operation range. Adhesion to new substrates with cohesive failure mode.

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Huntsman’s thermal management and electrical insulation solutions can improve power density, extend component lifetime and improve reliability.

Our long-lasting, reliably-sealing solutions offer high flexibility and crack resistance, optimized thermal conductivity, excellent thermal endurance and improved chemical stability. They are ready for high-voltage applications (800 V) in the next generation of electric vehicles.

Huntsman offers a wide range of epoxy-based and polyurethane resins. All are fast-curing even at low temperatures, which improves production throughput and delivers cost savings.

Our chemists have long-standing expertise in developing advanced resins and hardeners. This enables us to stay current with ever more complex requirements in automotive electronics. Research and development activities are aimed at meeting the challenges of today and tomorrow.

The Right Resin Systems for Your Electronic Components

Battery Electronics

Battery Electronics

We offer casting and impregnating resin systems for batteries and improve battery efficiency, safety, and production cost.

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Stator for E-Motor

Stator for E-Motor

We offer heat-conductive encapsulants for electric motors, all of which meet the highest temperature endurance requirements of car manufacturers.

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Rotor for E-Motor

Rotor for E-Motor

Our secondary insulation materials guarantee a strong and durable fixing of rotor coils, even when operating under high rotation speeds and challenging peak temperatures.

View Rotor for E-Motor
Power Electronics

Power Electronics

Our encapsulation technology can substantially improve the performance and cost of power electronics devices and is ready for next-generation high-voltage applications.

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Ignition Coil

Ignition Coil

We produce epoxy systems specially designed to insulate high-voltage coil components, thus reducing transformer and inductor hot spots and extending reliability and lifespan.

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Insulating Resin Systems for Electric Vehicles

Insulating Resin Systems for Electric Vehicles

Discover our ARALDITE® encapsulants and impregnation resins for electric motors, battery and power electronics. 

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Frequently Asked Questions

What properties are required in encapsulants for power electronics?

Encapsulants for power electronics must exhibit good thermal conductivity and meet flammability certifications such as UL 94. Short cure times translate to faster processing.

What specific Huntsman products are recommended as encapsulants for power electronics?

ARALDITE® CW 1302 resin / ARADUR® HY 1300 hardener features good heat conductivity and thermal endurance. ARALDITE® CW 1195 resin / ARADUR® HW 1196 hardener offers fast fill and cure times to enable fast processing, as well as a low coefficient of thermal expansion.

The Right Solution for Your Manufacturing Process

Discover our electronics processes and decrease your production waste and processing time.

Processes for Electronics

Encapsulation Resin Systems

Our ranges of epoxy and polyurethane encapsulant chemistries meet the most stringent requirements for electronics applications in the electrified powertrain.

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Impregnation Resin Systems

Huntsman’s one- and two-component resin systems for impregnation processes insulate, protect, and improve the efficiency and durability of electric motors.

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