泡沫塑料芯材燃烧性能对薄抹灰外保温系统防火性能的影响

Effect of Combustion Property of Foam Plastic Core Materials on Fire Resistance of Thin Plastering External Thermal Insulation System

关键词:  薄抹灰外保温系统  燃烧性能  防火性能  实体火灾试验

Key words:  thin plastering external thermal insulation system(TPETIS)  combustion property  fire resistance  real scale fire test

摘要:

采用标准燃烧性能试验和实体火灾试验，研究了薄抹灰外保温系统(TPETIS)防火性能与泡沫塑料芯材燃烧性能之间的关系.结果表明：在系统构造方式相同条件下，泡沫塑料芯材的燃烧增长速率指数、热释放速率峰值和氧指数是影响TPETIS防火性能的关键因素.从系统表面火焰蔓延、内部隐匿燃烧和室内烟气层热辐射风险考虑，在窗口火作用下，燃烧性能等级为B，C级芯材的TPETIS风险较低，D级芯材的TPETIS具有一定的内部隐匿燃烧和室内烟气层热辐射风险.

Abstract:

Relationship between the fire resistance of thin plastering external thermal insulation system (TPETIS) and the combustion property of foam plastic core materials was explored based on standard combustion test and real scale fire test. The results show that fire growth rate index, peak heat release rate and oxygen index are key factors that influence the fire resistance of TPETIS in the condition of same system configuration.When exposed to window spill plume, TPETIS with core materials having a classification of combustion property of B or C has relatively low risks of surface fire propagation, internal fire spread and smoke layer heat radiation in the upper room. TPETIS with class D core materials has some risk of internal fire spread and smoke layer heat radiation.