化工学报 ›› 2019, Vol. 70 ›› Issue (7): 2802-2810.DOI: 10.11949/0438-1157.20181229

• 过程安全 • 上一篇    下一篇

点火位置对乳胶泡沫水平火蔓延规律的影响

张明振1,3(),黄冬梅1(),胡毅伟1,原琪1,席合一1,沈利铭2,段鹏征2   

  1. 1. 中国计量大学质量与安全工程学院,浙江 杭州 310018
    2. 喜临门家具股份有限公司,浙江 绍兴 312000
    3. 深圳市城市公共安全技术研究院消防安全研究所,广东 深圳 518046
  • 收稿日期:2018-10-19 修回日期:2019-04-09 出版日期:2019-07-05 发布日期:2019-07-05
  • 通讯作者: 黄冬梅
  • 作者简介:张明振(1992—),男,硕士研究生,<email>2292453790@qq.com</email>
  • 基金资助:
    浙江省自然科学基金项目(17E060004);浙江省重点研发项目(2018C01136)

Effect of ignition position on horizontal flame spread of latex foam

Mingzhen ZHANG1,3(),Dongmei HUANG1(),Yiwei HU1,Qi YUAN1,Heyi XI1,Liming SHEN2,Pengzheng DUAN2   

  1. 1. College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, China
    2. Xilinmen Furniture Co. Ltd. , Shaoxing 312000, Zhejiang, China
    3. Institute of Fire Safety, Shenzhen City Public Safety Technology Research Institute Co. Ltd. , Shenzhen 518046, Guangdong, China
  • Received:2018-10-19 Revised:2019-04-09 Online:2019-07-05 Published:2019-07-05
  • Contact: Dongmei HUANG

摘要:

为研究点火位置对乳胶泡沫材料水平方向火蔓延规律的影响。搭建小尺寸实验平台,在距离材料中心点0(x1)、3.54 cm(x2)、7.08 cm(x3)、10.62 cm(x4)、14.16 cm(x5)、17.70 cm(x6)位置处点火,研究了试样表面温度、质量损失、火焰高度、火蔓延速度等特性参数的变化规律。结果表明,随着点火位置由材料中心点向边缘点移动,平均火蔓延速度分别为0.24、0.23、0.19、0.31、0.42、0.51 cm·s-1,呈现先减小后增大的规律;x3点火位置时的平均火焰高度较低,燃烧时间较长,平均质量损失速率较低,主要与火蔓延过程中的热量传递方式有关。研究结果显示了乳胶泡沫的火蔓延过程,得到了点火位置对火蔓延的影响规律。

关键词: 乳胶泡沫, 点火位置, 火蔓延, 传热, 安全, 实验验证

Abstract:

A small-size experimental platform was developed to study the effect of ignition position on horizontal flame spread of 2 cm thickness latex foam. The ignition position was 0 (x1), 3.54 cm (x2), 7.08 cm (x3), 10.62 cm (x4), 14.16 cm (x5) and 17.70 cm (x6) from the center point of the material surface. The characteristic parameters, such as surface temperature, mass loss, flame height and flame spread speed were measured during the tests. The results showed that the average flame spread rate is 0.24, 0.23, 0.19, 0.31, 0.42 and 0.51 cm·s-1 for the tests that the ignition position is far from the center point of the material. At the x3 ignition position condition, the average flame height and mass loss rate was lower and the combustion time was longer than the other tests due to the difference of the heat transfer mode. Then the heat transfer mechanism of the combustion process with different ignition position was analyzed.

Key words: latex foam, ignition position, flame spread, heat transfer, safety, experimental validation

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