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microtailering of composites

Tailoring composites for thermal management of e-motors

Electrification of the transport sector is seen as one of the solutions to
greenhouse gas reduction. The aim of this project is to
develop new polymer formulations for two applications in electric motors:
copper winding encapsulation and impregnation resin.

The aim of the project is to develop new polymer formulations for passive cooling of electric motors, for two applications in particular: copper winding encapsulation and impregnation resin (which encapsulates the stator).

Through combined experimental and simulation studies, these formulations will meet the requirements of two main end-uses.

The formulated composite machinability and functional performance will be verified at both laboratory and prototype level.

To achieve the main objective, specific targets will be met:

  • To develop suitable electrically insulating polymer formulations with at least 30% improved thermal conductivity and sufficient mechanical properties for the application.
  • To achieve an optimized polymer system suitable for impregnation and lamination by combining different processes.
  • To produce prototypes for electric motors for lifetime verification and to demonstrate a 10% increase in motor efficiency.


Project name

Thermally conductive composites e-motors




Region Norrbotten, Region Stockholm, Västra Götaland Region

RISE role in project

koordinator and deltagare

Project start


3 years

Total budget

6 Milion SEK


Scania, Alva Industries, St. Gobain, Von Roll, Engtex AB, Professor Thomas Vågberg, Nicolas Boulanger, Xueen Jia, Dept of Physics


Swedish Energy Agency


Project members

Supports the UN sustainability goals

9. Industry, innovation and infrastructure
11. Sustainable cities and communities
12. Responsible consumption and production
Stacy Trey

Contact person

Stacy Trey


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Christian Carlsson

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Christian Carlsson


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