Bottom fire behaviour of thermally thick natural rubber latex foam
Bottom fire behaviour of thermally thick natural rubber latex foam
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DOI：
10.1515/epoly-2019-0002
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发表时间：
2019-01
期刊：
影响因子：
3.7
通讯作者：
Shuwen Wang;Dongmei Huang;C. Guo;Q. Yuan;Yongliang Chen;Peng Lin;Liming Shen;Pengzhen Duan
中科院分区：
文献类型：
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作者：
Shuwen Wang;Dongmei Huang;C. Guo;Q. Yuan;Yongliang Chen;Peng Lin;Liming Shen;Pengzhen Duan
摘要 在底部通风的小型实验平台上，对直径为6 mm的均匀分布孔的25 cm × 25 cm × 5 cm天然橡胶（NR）乳胶泡沫的底部着火行为进行了实验研究。分析了底部火灾行为。结果表明，热稠NR乳胶泡沫在底部通风条件下的燃烧过程可分为初始生长、充分发展和衰退3个阶段。在 308 秒时观察到覆盖整个后表面的爆燃。底部点火后观察到燃烧球以0.15 m/s的速度移动，并随着膨胀从中心向两侧移动。当底面在308 s点燃时，样品的质量损失速率从0.2 g/s急剧加速到0.5 g/s。
Abstract In 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.