Rail rubber pads for railway track structure are important components in the track structure. They are installed between steel rails and concrete sleepers. Its main function is to buffer the high-speed vibration and impact generated when vehicles pass through the rails, protect the roadbed and sleepers, and provide signal The system is electrically insulated, and the rubber pad is exposed to the atmosphere for a long time, so it is required to have good resistance to natural aging, cold and heat resistance.