主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (8): 1155-1160.

• • 上一篇    下一篇

热塑性外保温材料火蔓延规律研究

刘幸娜，谢逢春   

  1. 芜湖市消防救援支队，安徽 芜湖241000
  • 出版日期:2021-08-15 发布日期:2021-08-15
  • 作者简介:刘幸娜(1989-)，女，河南洛阳人，芜湖市消防救援支队工程师，主要从事防火监督等工作，安徽省芜湖市镜湖区黄山中路10号，241000。

Study on fire propagation law of thermoplastic external insulation materials

LIU Xing-na, XIE Feng-chun   

  1. Wuhu Fire and Rescue Division, Anhui Wuhu 241000, China
  • Online:2021-08-15 Published:2021-08-15

摘要：

根据火灾动力学理论，考虑材料厚度和火源位置对材料燃烧发展过程的影响，建立了热塑性外保温材料无量纲火蔓延速率模型，提出了表征向上火蔓延和向下熔融流淌燃烧相互促进作用大小的指标—耦合燃烧度（I）。通过以材料厚度和火源位置为变量进行实验，研究了热塑性外保温材料火蔓延速率随时间呈指数增长，验证了模型的准确性，获得了不同厚度、不同火源位置条件下的耦合燃烧度，得出了耦合燃烧度（I）与火蔓延增长速度呈正比。


关键词: 热塑性外保温材料, 火蔓延速率, 材料厚度, 火源位置, 熔融流淌

Abstract:

In this paper, based on the theory of fire dynamics，considering the influence of the thickness of the material and the position of the ignition source on the combustion process ，and a dimensionless fire spreading rate model of thermoplastic external thermal insulation material was established，and the  coupling combustion degree was proposed to characterize the mutual promotion between upward fire spread and downward melt flow combustion.By taking the thickness of the material and the position of the fire source as variables, the results show that the fire spreading rate of the thermoplastic external thermal insulation material increases exponentially with time, and the accuracy of the model is verified, and the coupling degree of combustion under different thickness and different position of ignition source was obtained，and the results show that the coupling combustion degree is proportional to the growth rate of fire spread.


Key words:  , thermoplastic external thermal insulation material,  , rate of fire spread,  , thickness of the material and the position of the ignition source, melt and flow, coupling combustion degree