Rail transportation, as a modern means of transportation, gradually develops into a backbone transportation system in the public passenger transport system due to its irreplaceable advantages such as large capacity, high speed, low energy consumption, low pollution, safety, reliability, punctuality, and comfort. Various low and high-density silicone foam cushions and composite foam cushions are used to provide vehicles with economical, safe, reliable, flame retardant, heat insulation, cushioning, absorption, and anti-aging materials.