核心层厚度对聚乙烯基铝塑板燃烧特性影响研究
Study on the influence of core layer thickness on combustion characteristics of polyethylene-based aluminum composite panel
王佳斌 1郑寓超 1崔嵛 1刘国磊1
作者信息
- 1. 山东理工大学 资源与环境工程学院,山东 淄博 255049
- 折叠
摘要
通过锥形量热仪研究了不同核心层厚度聚乙烯基铝塑板的燃烧特性.选用 35、50、65、80 kW/m2 共 4种热流强度,得到不同核心层厚度铝塑板的点燃特性、火灾风险和烟气毒性等.结果发现:聚乙烯基铝塑板符合热薄型材料点燃规律,3、4、5 mm厚核心层铝塑板临界点燃热流强度的推导值分别为33.9、25.1、9.9 kW/m2.铝塑板燃烧的热释放速率随热流强度增加而明显增加,且有向双峰发展的趋势.随着热流强度和铝塑板核心层厚度增加,聚乙烯基铝塑板的火灾性能指数(FPI)由41迅速下降到0.14,火灾蔓延指数(FGI)则由0.02迅速增加到3.19,CO释放速率也迅速增大,导致火灾危险性大幅增加.
Abstract
The combustion characteristics of polyethylene-based aluminum composite panels with different core layer thicknesses were studied by using cone calorimeter.Four heat fluxes of 35,50,65,and 80 kW/m2 were selected to obtain the ignition charac-teristics,fire risk,and smoke toxicity.The results showed that polyethylene-based aluminum composite panels conform to the ig-nition law of thermal thin materials,and the derived critical igni-tion heat fluxes of 3,4,5 mm thick core layers are 33.9,25.1,9.9 kW/m2,respectively.With the increase of heat flux,the heat release rate of aluminum composite panels of each thickness in-creases obviously,and the heat release rate tends to double peak.With the increase in heat flux and core layer thickness,there was a rapid decrease in the Fire Performance Index(FPI)from 41 to 0.14,accompanied by a rapid increase in the Fire Growth Index(FGI)from 0.02 to 3.19,and the CO release rate also rapidly in-creases,resulting in a significant increase in fire hazard.
关键词
聚乙烯基铝塑板/燃烧特性/锥形量热仪/烟气危害Key words
polyethylene-based aluminum composite panel/com-bustion characteristics/cone calorimeter/smoke hazard引用本文复制引用
出版年
2024
NETL
NSTL
万方数据