Abstract
AbstractIn this paper, the bottom fire behaviour of 25 cm × 25 cm × 5 cm natural rubber (NR) latex foam with uniformly distributed 6 mm diameter holes was investigated experimentally in a small-scale experimental platform under bottom ventilation. The bottom fire behaviour was analysed. The results show that the burning process of the thermally thick NR latex foam under bottom ventilation conditions can be divided into three stages: initial growing, full development, and decay. A deflagration covered the entire rear surface was observed at 308 s. The burning balls moving at a speed of 0.15 m/s were observed after the bottom ignition and they moved from the center to the sides along with the expansion. The mass loss rate of the sample was accelerated dramatically from 0.2 g/s to 0.5 g/s when the bottom surface was ignited at 308 s.
Highlights
Introduction of the thermally thickNR latex foam under bottom venti- materials
The 5 cm-thickness NR latex foam mattress is a representative kind of material in real scenarios
25 cm × 25 cm × 5 cm NR latex foam sample supplied by Xilinmen Furniture Co., Ltd was used
Summary
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