常用有机保温材料在SBI试验中的燃烧行为分析

Analysis of burning behavior of organic thermal insulation materials in SBI test

以工程常用有机保温材料的单体燃烧试验为基础,根据不同种类材料的热释放速率曲线讨论其燃烧行为。对比发现:不同种类的保温材料燃烧行为差别较大,热塑性保温材料(EPS、XPS)的火灾危险性高于热固性保温材料(聚氨酯板);不同厚度的有机保温材料在燃烧过程中有较大差异,尤其是XPS;彩钢板对保温芯材有一定的保护作用,但也会因时间的延长、温度的升高而减弱;具有一定厚度的板材,其安装方式对试验结果有影响,建议根据试样在实际工程中的安装方式进行确认。

Based on the SBI test of organic thermal insulation materials commonly used in engineering,the burning behaviors of different materials were discussed according to the heat release rate curves.The results show that the fire risk of thermoplastic insulation materials(EPS and XPS)is higher than that of thermoset insulation materials(polyurethane board).There was a great difference between organic insulation materials with different thickness in the burning process,especially XPS.Color steel plate has a certain protective effect on the insulation core material,but will also be weakened by the extension of time and temperature rise.For the boards with a certain thickness,the installation method has an impact on the test results,so it is recommended to confirm installation method according to the sample used in the actual project.