Lightweight Automotive

Created on 11.13

PMI foam (Polymethacrylimide foam) has been widely used in the lightweight automotive field due to its excellent lightweight and high-strength properties (specific strength up to 500-800 MPa・kg⁻¹・m³, density only 0.03-0.12 g/cm³), outstanding high-temperature resistance (long-term service temperature up to 120-150℃, maximum short-term tolerance temperature 200℃), as well as good mechanical stability and molding processability.

Its core application scenarios cover key components such as automotive body panels (e.g., steering wheels, hoods, doors, spoilers), chassis core components (e.g., subframes, suspension arms, front bumper anti-collision strips), and new energy vehicle battery pack housings and internal support structures.

By adopting a composite sandwich structure of "PMI foam core + carbon fiber/glass fiber panels" to replace traditional steel or aluminum alloy components, it can achieve a vehicle weight reduction of 50%-70%, significantly reducing vehicle operating energy consumption (for every 100kg weight reduction, the 100km fuel consumption can be reduced by 0.3-0.5L, and the cruising range of new energy vehicles can be increased by 5%-8%).

Meanwhile, PMI foam's excellent impact resistance and vibration damping performance can effectively improve body structural stability, driving smoothness, and collision safety performance. Its low thermal conductivity can also optimize the thermal management efficiency of battery packs, delay battery degradation, and provide core material support for the efficient and safe operation of lightweight