重复受热条件下木材防火涂料有效性研究
Study on the effectiveness of wood fireproof coatings under repeated heating conditions
郑兰芳 1朱智超 2王霁 1韩海云1
作者信息
- 1. 中国人民警察大学 防火工程学院,河北 廊坊 065000
- 2. 中国人民警察大学 防火工程学院,河北 廊坊 065000;国核湛江核电有限公司,广东 湛江 524000
- 折叠
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.
Abstract
In order to investigate the effect of thermal radiation in-tensity on the performance of wood fire retardant coatings after fire retardant treatment by the surface coating method for the am-nioblast coatings of the P-N-C fire retardant system,experiments were carried out using cone calorimetry(CONE)and simultane-ous thermal analyzer(STA).The carbon layer secondary heating method was proposed to effectively test the flame retardant perfor-mance of fire-resistant coatings under different fire conditions,and the reliability of the conclusions was verified using thermo-gravimetric 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.Mean-while,the ignition time,heat release rate,total smoke produc-tion and fire growth index of the secondary heating of the coated specimens were analyzed in comparison with those of the radia-tion 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.
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Key words
intumescent fireproof coating/fire coating for wood/thermal radiation intensity/repeated heating/thermogravimetric analysis/cone calorimeter引用本文复制引用
基金项目
国家重点研发计划专项(2021YFC1523504)
河北省高等学校科学技术研究项目(Z2020249)
出版年
2024
NETL
NSTL
维普
万方数据