Most countries around the world have set specific time plans for phasing out the sale of fuel - powered vehicles. Currently, car manufacturers are in the transition from traditional fuel - powered cars to new energy vehicles. Compared with traditional fuel - powered cars, the - capacity of new energy vehicles remains a huge challenge. Given the current lack of significant breakthroughs in new energy batteries technology, vehicle light-weighting is the main direction for improving endurance capacity.

PMI foam sandwich structures can be used for vehicle light-weighting. For instance, when manufacturing components such as car doors, engine hoods, and roofs, using PMI foam sandwich structures can reduce weight while maintaining the required stiffness and strength. The application of PMI composite structures in vehicle light-weighting can significantly reduce weight and improve performance, making it a promising development direction in the automotive industry. With the progress of material science and manufacturing technology, it is expected that PMI foam will be more widely used in vehicle light-weighting.