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 ›› 2024, Vol. 43 ›› Issue (1): 103-106.

• • 上一篇    下一篇

重复受热条件下木材防火涂料有效性研究

郑兰芳1, 朱智超1，2, 王霁1, 韩海云1   

  1. （1. 中国人民警察大学 防火工程学院，河北 廊坊 065000；2. 国核湛江核电有限公司，广东 湛江 524000）
  • 出版日期:2024-01-15 发布日期:2024-01-15
  • 作者简介:郑兰芳(1977- )，女，河北大城人，中国人民警察大学防火工程学院副教授，硕士，主要从事燃烧基础理论、阻燃材料、消防科普等研究，河北省廊坊市安次区西昌路220号，065000。
  • 基金资助:
    基金项目：国家重点研发计划专题项目（2021YFC1523504）；河北省高等学校科学技术研究项目（Z2020249）

Study on the effectiveness of wood fireproof coatings under repeated heating conditions

Zheng Lanfang1, Zhu Zhichao1,2, Wang Ji1, Han Haiyun1   

  1. (1. School of Fire Protection Engineering, China People's Police University, Hebei Langfang 065000, China; 2. CNNC Zhanjiang Nuclear Power Co.,Ltd.,Guangdong Zhanjiang 524000, China)
  • Online:2024-01-15 Published:2024-01-15

摘要： 针对P-N-C防火阻燃体系的氨基树脂涂料，为探究以表面涂覆法进行阻燃处理后所受热辐射强度对木材防火涂料性能的影响，采用锥形量热仪与同步热分析仪开展试验，提出炭层二次加热法，有效检验了不同火灾情况下防火涂料的阻燃性能，并以热重分析技术检验结论的可靠性。通过涂料的热重分析、涂覆试样的二次辐射加热数据分析得出，涂料在575~750 ℃温度范围内完全炭化，进入相对稳定阶段。对比分析此温度范围对应的35 kW/m2辐射强度下，涂覆试样二次加热的引燃时间、热释放速率、总产烟量、火灾增长指数等参数，得出此条件下膨胀炭层的阻燃性能最佳。

关键词: 膨胀型防火涂料, 木材防火涂料, 热辐射强度, 重复受热, 热重分析, 锥形量热仪

Abstract: In order to investigate the effect of thermal radiation intensity on the performance of wood fire retardant coatings after fire retardant treatment by the surface coating method for the amnioblast coatings of the P?N?C fire retardant system, experiments were carried out using cone calorimetry (CONE) and simultaneous thermal analyzer (STA). The carbon layer secondary heating method was proposed to effectively test the flame retardant performance of fire?resistant coatings under different fire conditions, and the reliability of the conclusions was verified using thermogravimetric analysis technology. Through the thermogravimetric analysis of the coatings and the analysis of the secondary radiation heating data of the coated specimens, it was concluded that the coatings were completely charred in the temperature range of 575~750 ℃ and entered into a relatively stable stage. Meanwhile, the ignition time, heat release rate, total smoke production and fire growth index of the secondary heating of the coated specimens were analyzed in comparison with those of the radiation intensity of 35 kW/m2 in this temperature range, and it was concluded that the fire retardancy of the expanded charcoal layer was the best in this condition.

Key words: intumescent fireproof coating, fire coating for wood, thermal radiation intensity, repeated heating, thermogravimetric analysis, cone calorimeter