Rail Transit

Created on 11.13

In the rail transit field, PMI foam material has become the preferred material for interior panels and structural supports of high-speed trains, subways and other rail transit vehicles, relying on its core advantages of lightweight, high rigidity, noise reduction, flame retardancy and environmental protection. Its application value and technical characteristics are as follows:

I. Application in Interior Panels

The interior panels of high-speed trains and subways need to meet the requirements of lightweight, safety and comfort simultaneously. The high specific strength of PMI foam can significantly reduce the weight of interior panels (20%-40% lighter than traditional materials) while ensuring structural stability, thereby reducing the overall energy consumption of trains and improving operational economy. Meanwhile, its uniform closed-cell structure has excellent noise reduction performance, which can effectively block mechanical noise and air flow noise outside the carriage, reduce the noise level inside the carriage (usually by 5-10dB), and enhance passenger comfort. In addition, the material meets the strict flame retardant standards of the rail transit industry (such as EN 45545, GB 8624, etc.), releases no toxic gases during combustion, and has low smoke density. It can ensure the safe evacuation of passengers in emergency situations such as fires, meeting the safety and compliance requirements of rail transit vehicles.

II. Application in Structural Supports

Structural supports are key components to ensure the strength and stability of rail transit vehicle bodies, requiring high rigidity, vibration resistance and fatigue resistance. PMI foam material has a high elastic modulus, which can effectively withstand dynamic loads and vibration impacts during train operation, avoid deformation or fracture of supports, and ensure the long-term reliable operation of the vehicle body structure. Its lightweight characteristic can also optimize the weight distribution of the vehicle body, reduce the load on the train bogie, and improve the stability and controllability of train operation. At the same time, the material has strong environmental corrosion resistance, can adapt to the complex environments such as high humidity and large temperature difference that rail transit vehicles are in for a long time, is not prone to aging and corrosion, extends the service life of structural supports, and reduces long-term maintenance costs.

In addition, PMI foam material can realize customized processing through molding, cutting and other processes, adapting to the complex shape requirements of interior panels and structural supports of different models of high-speed trains and subways. It provides an efficient material solution for the lightweight and high-performance upgrading of rail transit equipment, helping the industry achieve the dual goals of energy saving, consumption reduction, safety and comfort.