[1]赵恒泽,李晔,齐艺裴,等.水膜预湿行为对典型保温材料燃烧抑制实验研究*[J].中国安全生产科学技术,2021,17(1):102-108.[doi:10.11731/j.issn.1673-193x.2021.01.017]
ZHAO Hengze,LI Ye,QI Yipei,et al.Experimental study on combustion suppression of typical thermal insulation material by water film pre-wetting behavior[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(1):102-108.[doi:10.11731/j.issn.1673-193x.2021.01.017]
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水膜预湿行为对典型保温材料燃烧抑制实验研究*
ZHAO Hengze,LI Ye,QI Yipei,et al.Experimental study on combustion suppression of typical thermal insulation material by water film pre-wetting behavior[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(1):102-108.[doi:10.11731/j.issn.1673-193x.2021.01.017]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 17
- 期数:
- 2021年1期
- 页码:
- 102-108
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2021-01-31
文章信息/Info
- Title:
- Experimental study on combustion suppression of typical thermal insulation material by water film pre-wetting behavior
- 文章编号:
- 1673-193X(2021)-01-0102-07
- Keywords:
- water film; external radiation; dry patch; deformation; melting
- 分类号:
- X932
- 文献标志码:
- A
- 摘要:
- 为探索喷淋形成水膜的预湿行为对外立面典型保温材料燃烧抑制机理，采用自建水膜预湿抑制保温材料燃烧实验装置，研究外加辐射作用下，水膜流率对聚苯乙烯（PS）保温材料表面出现干斑、变形和熔融的影响规律。结果表明：实验结束时PS材料表面水膜出现干斑、材料发生变形和熔融面积占比均与无量纲辐射强度呈正相关；PS材料表面水膜出现干斑、材料发生变形和熔融的时间随着无量纲辐射强度增大呈先变小后稳定的趋势；实验条件下，PS材料表面水膜出现干斑、材料发生变形和熔融的临界无量纲辐射强度分别为0.002 0，0.002 6，0.003 3。水膜预湿行为会很大程度阻止保温材料的熔融热解燃烧，为灭火救援提供一定的理论参考。
- Abstract:
- In order to explore the combustion suppression mechanism of pre-wetting behavior of the water film formed by spraying on the typical insulation materials on external facade,a selfbuilt experimental device with water film pre-wetting to suppress the combustion of thermal insulation materials was adopted in the experiment to study the influence of the water film flow rate on the appearance of dry patch,deformation and melting on the surface of thermal insulation material polystyrene (PS) under the external radiation.The results showed that at the end of experiment,the area proportions of the dry patch on the surface water film of PS,the deformation and melting of material were all positively correlated with the dimensionless radiant heat flux.The time for the occurrence of dry patch on the surface water film of PS,the deformation and melting of material tended to decrease first and then stabilize with the increase of dimensionless radiation heat flux.Under the experimental conditions,the critical dimensionless radiation heat fluxes for the occurrence of dry patch on the surface water film of PS,the deformation and melting of material were 0.002 0,0.002 6,0.003 3,respectively.The water film pre-wetting behavior will greatly prevent the melting,pyrolysis and combustion of the thermal insulation material,and provide a certain theoretical reference for fire fighting and rescue.
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备注/Memo
- 备注/Memo:
-
收稿日期： 2020-11-30
* 基金项目： 河北省自然科学基金项目(E2018209338)
作者简介： 赵恒泽，博士，讲师，主要研究方向为建筑火灾防治。
通信作者： 李晔，博士，副教授，主要研究方向为工业安全防治技术。
