Research on Combustion Characteristics of Vulcanized Rubber Based on Fire Propagation Apparatus

Abstract

Abstract Vulcanized rubber is widely used as a vibration damping material for high-speed train floors. This paper aims to study the combustion characteristics of vulcanized rubber materials under fire propagation apparatus at 20-50 kW/m2. The results show that the ignition time and the time to peak heat release rate of the vulcanized rubber decrease with the increase of the external heat flux, and the transformed ignition time (l/tign)n increases linearly with the external heat flux. The fire risk of vulcanized rubber and the possibility of flashover increase with the increase of external heat flux. In addition, higher external heat flux will accelerate the generation of smoke in the fire scene, threatening the lives of people on the train. These data and results can be used to evaluate the interior materials of high-speed trains.