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 ›› 2026, Vol. 45 ›› Issue (8): 24-29.DOI: 10.20168/j.1009-0029.2026.08.0024.06

• • 上一篇    下一篇

宽度和引燃位置对XPS保温板火蔓延影响试验研究

禄利刚1, 季经纬2, 朱楠1   

  1. （1.徐州工程学院 土木工程学院，江苏 徐州 221018； 2.中国矿业大学 安全工程学院，江苏 徐州 221116）
  • 收稿日期:2025-07-08 修回日期:2026-02-04 出版日期:2026-08-15 发布日期:2026-08-15
  • 作者简介:禄利刚，徐州工程学院土木工程学院讲师，博士，主要从事建筑消防方面的研究，江苏省徐州市云龙区丽水路2号，221018，llg@xzit.edu.cn。
  • 基金资助:
    国家自然科学基金青年科学基金项目（52506167）

Experimental study on the influence of width and ignition position on fire spread of XPS insulation board

Lu Ligang1, Ji Jingwei2, Zhu Nan1   

  1. (1. School of Civil Engineering, Xuzhou University of Technology, Xuzhou Jiangsu 221018, China; 2. School of Safety Engineering, China University of Mining and Technology, Xuzhou Jiangsu 221116, China)
  • Received:2025-07-08 Revised:2026-02-04 Online:2026-08-15 Published:2026-08-15

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摘要： 为研究试样宽度和引燃位置对XPS保温板火蔓延行为的影响，搭建了相应的试验装置，并通过重复性试验验证了其可靠性。针对不同宽度的B2级XPS试样，分别在上部和下部进行全宽度线性引燃，获取了相关的燃烧及火蔓延参数。结果表明，在顺流火蔓延条件下，随试样宽度增加，全时最高火焰温度波动幅度增大；而在逆流火蔓延条件下，该温度保持稳定。瞬时火焰高度在顺流火中随宽度增加呈先减小后增大的趋势，与时间关联性较弱；在逆流火中，瞬时火焰高度随时间推移呈波动增大趋势，随后趋于稳定，且相同宽度下逆流火的平均火焰高度显著高于顺流火。在火蔓延速率方面，顺流火条件下，各宽度试样的线性拟合蔓延速率与宽度变化无明显相关性；逆流火条件下，线性拟合蔓延速率与试样宽度呈正相关，且逆流火瞬时速率的波动范围和均值均小于顺流火。在相同宽度下，顺流火蔓延的平均速率约为逆流火的3.6±0.3倍。在燃烧行为方面，顺流火中熔融物滴落频繁；逆流火中熔融物则黏附于火焰，并引发突发的火焰竖向传播，两种现象均可能导致严重火灾。

关键词: XPS保温板, 火蔓延, 宽度, 引燃位置

Abstract: To investigate the effects of specimen width and ignition position on the flame spread behavior of XPS insulation boards, a corresponding experimental apparatus was constructed, and its reliability was verified through repeatability tests. For B2-grade XPS specimens of different widths, full-width linear ignition was applied at both the upper and lower sections, and relevant combustion and flame spread parameters were obtained. The results indicate that under concurrent flame spread conditions, the full-time maximum flame temperature fluctuation amplitude increases with specimen width; whereas under countercurrent flame spread conditions, this temperature remains stable. In concurrent flames, the instantaneous flame height exhibits a trend of first decreasing and then increasing with width, showing a weak correlation with time. In countercurrent flames, the instantaneous flame height tends to fluctuate and increase over time before stabilizing, and at the same width, the average flame height under countercurrent conditions is significantly higher than that under concurrent conditions. Regarding the flame spread rate, under concurrent flame spread, the linearly fitted spread rate shows no significant correlation with width variation for specimens of different widths. Under countercurrent flame spread, the linearly fitted spread rate is positively correlated with specimen width, and both the fluctuation range and mean value of the instantaneous spread rate under countercurrent conditions are smaller than those under concurrent conditions. At the same width, the average spread rate under concurrent flame spread is approximately 3.6 ± 0.3 times that under countercurrent flame spread. In terms of combustion behavior, molten material dripping occurs frequently in concurrent flames; whereas in countercurrent flames, molten material adheres to the flame and triggers sudden vertical flame propagation. Both phenomena may lead to severe fire hazards.

Key words: XPS insulation board, fire spread, width, ignition position