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 ›› 2022, Vol. 41 ›› Issue (12): 1619-1622.

• •    下一篇

喷涂油漆在薄金属表面燃烧特性研究

刘国磊1，牛俊粉2，崔 嵛1，马秋峰1   

  1. （1.山东理工大学 资源与环境工程学院，山东 淄博 255049；2.淄博市淄川区应急管理局，山东 淄博 255100）
  • 出版日期:2022-12-15 发布日期:2022-12-16
  • 作者简介:作者简介：刘国磊（1985－ ），男，山东淄博人，山东理工大学资源与环境工程学院副教授，博士，主要从事防灭火和安全评价方面的研究，山东省淄博市山东理工大学西校区，255049。
  • 基金资助:
    国家自然科学基金项目（51604169）

Study on combustion characteristics of spray paint on thin metal surface

Liu Guolei1, Niu Junfen2, Cui Yu1, Ma Qiufeng1   

  • Online:2022-12-15 Published:2022-12-16

摘要： 摘 要：通过锥形量热仪研究了喷涂油漆在薄金属表面的燃烧特性。选用35，50，65，80 kW/m2共4种热辐射强度，得到点燃时间、热释放速率、CO释放速率等参数。结果发现：薄金属表面油漆为典型的热薄型固体，点燃时间的倒数与热辐射强度呈线性关系。喷涂层数越多，引燃所需的热辐射强度越小，火灾危险性也越高，试验得到1层喷涂、2层喷涂和3层喷涂的临界热流强度分别约为30.8，10.0，5.0 kW/m2。热释放速率呈现出双峰特性，第一峰值和第二峰值随热辐射强度呈线性增长关系，且峰值随喷涂层数的增加而增加。CO释放速率则呈现出3个峰值。随着热辐射强度增加，各样品的火灾性能指数不断降低，火灾蔓延指数不断升高，火灾危险性增加。

关键词: 关键词：喷涂油漆, 薄金属, 燃烧特性, 锥形量热仪, 火灾性能指数, 火灾蔓延指数

Abstract: The combustion characteristics of spray paint on thin metal surfaces were studied by cone calorimeter. Four heat radiation intensities of 35, 50, 65 and 80 kW/m2 were selected, and parameters such as ignition time, heat release rate and CO release rate were obtained. It was found that the paint on the thin metal surface is a typical hot thin solid, and the reciprocal of the ignition time has a linear relationship with the thermal radiation intensity. The more the number of spray layers, the smaller the heat radiation intensity required for ignition, and the higher the fire hazard. The experimental results show that the critical heat flux intensity of 1-layer spraying, 2-layer spraying and 3-layer spraying is about 30.8, 10.0 and 5.0 kW/m2, respectively. The heat release rate showed a bimodal characteristic, the first peak and the second peak increased linearly with the thermal radiation intensity, and the peak increased with the increase of the number of sprayed layers. The CO release rate showed three peaks. With the increase of thermal radiation intensity, the fire performance index of each sample continued to decrease, the fire spread index continued to increase, and the fire risk increased.

Key words: spray paint, thin metal, combustion characteristics, cone calorimeter, fire performance index, fire spread index