Designing high voltage motors for re-use: Increasing motor component circularity (Circ-Plast-Motor)

Important results from the project

The project identified new epoxy resins that can dissolve below 250 °C, enabling gentle motor disassembly and improving sustainability. Additionally, newly developed polymer materials for insulation applications were tested and demonstrated high performance. The study met its goals and showed that modified materials can enhance recycling and repair. The results laid the foundation for two future research projects aimed at increasing circularity in the automotive industry.

Expected long term effects

The project is expected to contribute to increased reuse and extended lifespan of electric motors, as well as reduced energy consumption during disassembly. By reducing the number of plastic types and developing materials that dissolve below 250 °C, both environmental impact and energy use can be lowered. The project supports the sustainable transition of the transport sector from both a material and production perspective.

Approach and implementation

The project was carried out as a pre-study involving screening of epoxy resins and polymers. Epoxy resins were evaluated in various degradation media, while the electrical properties and chemical resistance of the developed polymer materials were assessed through partial discharge and ageing tests. Collaboration between industry and academia included workshops, lab visits and meetings. The results led to continued research, increased knowledge, and new project proposals in circular motor design.