外墙热固性聚苯乙烯保温板的火灾燃烧特性  

Fire Combustion Characteristics of Exterior Wall Thermosetting Polystyrene Insulation Board

作　　者：欧阳的华 晏皓昱 郭志勇[1] 姜涛 OUYANG Dihua;YAN Haoyu;GUO Zhiyong;JIANG Tao(School of Resources Engineering,Xi'an University of Architecture and Technology,Xi'an,Shaanxi 710000,China;Qinghai Building and Materials Research Co.,Ltd.,Xining,Qinghai 810008,China;Key Laboratory of Plateau Green Building and Eco-Community in Qinghai,Xining,Qinghai 810008,China)

机构地区：[1]西安建筑科技大学,资源工程学院,陕西西安710000 [2]青海省建筑建材科学研究院有限责任公司,青海西宁810008 [3]青海省高原绿色建筑与生态社区重点实验室,青海西宁810008

出　　处：《塑料》2023年第4期137-142,共6页Plastics

基　　金：青海省高原绿色建筑与生态社区重点实验室开放基金(KLKF-2020-006)。

摘　　要：为探究热固性聚苯乙烯保温板(TPS)的燃烧特性和火灾危险性,采用锥形量热仪对热固性聚苯乙烯与传统聚苯乙烯保温板(EPS)的燃烧特性参数及火灾性能参数进行了测试分析与比较。结果表明,当辐射照度为35 kW/m^(2)时,TPS点燃时间为7~9 s,仅为EPS的1/20;火灾性能指数FPI为0.14(m^(2)·s)/kW,约为EPS的1/5;火灾增长指数FGI较高,其值为1.23 kW/(m^(2)·s),这表明,TPS具有易燃性好、易发生轰燃、对热敏感的特点。通过分析两者燃烧特性可知,TPS的平均热释放速率为13.57 kW/m^(2),仅为EPS的2/5;平均质量损失速率为0.007 1 g/s,约为EPS的3/5;其生烟速率和总生烟量均低于EPS。同时,TPS燃烧过程中,无熔融物滴落,并且,燃烧后材料外观结构保持完整,避免了二次火灾的发生。通过对比各项指标发现,TPS材料的燃烧性能和火灾危险性明显优于EPS。In order to explore the combustion characteristics and fire hazard of thermosetting polystyrene insulation board(TPS),TPS and traditional polystyrene insulation board(EPS)were compared and analyzed by cone calorimeter.The results showed that when the radiation intensity was 35 kW/m^(2),the ignition time of TPS was 7~9 s,only 1/20 of that of EPS,the fire performance index FPI was 0.14(m^(2)·s)/kW,which was about 1/5 of EPS,and the fire growth index FGI was higher at 1.23 kW/(m^(2)·s),indicating that TPS had the characteristics of good flammability,easy to explode and sensitive to heat.However,through the analysis of their combustion characteristics,it was known that the average heat release rate of TPS was 13.57 kW/m^(2),only 2/5 of that of EPS,and the average mass loss rate was 0.007 1 g/s,which was about 3/5 of EPS.The smoke generation rate and total smoke production were lower than EPS.In addition,there was no molten drop during TPS combustion and the external structure remains intact after combustion,thus avoiding the occurrence of secondary fire.Through the comparison of various indexes,it was found that the flammability and fire risk of TPS material were obviously better than those of EPS.

关 键 词：热固性聚苯乙烯保温板(TPS) 传统聚苯乙烯保温板(EPS) 锥形量热仪 火灾特性 燃烧特性 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]