热塑性聚苯乙烯变温加速老化后燃烧特性研究  

Combustion characteristics of thermoplastic polystyrene after accelerated aging under variable temperature

作　　者：李晨燕 石必明[1] 张铖铖 潘娟 Li Chenyan;Shi Biming;Zhang Chengcheng;Pan Juan(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan Anhui 232063,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232063

出　　处：《消防科学与技术》2025年第4期485-490,共6页Fire Science and Technology

摘　　要：为探究老化对热塑性聚苯乙烯保温板的结构特性、燃烧性能和火灾危险性的影响规律,采用高低温循环的方式加速材料老化。借助扫描电镜、傅里叶红外和锥形量热仪等设备对加速老化后材料的结构和火灾性能参数进行测试和分析。结果表明,在高低温循环加速老化过程中,热塑性聚苯乙烯材料整体构型发生弯曲,内部孔隙结构的支撑力变弱;加速老化后,特定化学键的特征峰吸收强度增大,材料化学构成发生改变;通过对比分析锥形量热测得的各项指标,发现加速老化后的材料火灾危险性明显高于未老化材料。In order to investigate the effect of aging on the structural properties,combustion performance and fire hazard of thermoplastic polystyrene insulation boards,high and low temperature cycling was used to accel‐erate the aging of the material.With the help of scanning electron microscope,fourier infrared,cone calorimeter,the structure and fire performance parameters of the accelerated aging material were tested and analyzed.The re‐sults show that during the accelerated aging process of high and low temperature cycling,the overall configura‐tion of the thermoplastic polystyrene material bent,and the support of the internal pore structure became weaker;after the accelerated aging process,the absorption intensity of the characteristic peaks of the specific chemical bonds increased,and the chemical composition of the material changed;through the comparative analysis of the indexes measured by cone calorimetry experiments,it was found that the fire danger of the mate‐rial after accelerated aging was significantly higher than that of the unaged material.

关 键 词：热塑性聚苯乙烯 高低温循环 加速老化 燃烧特性 火灾危险性 

分 类 号：X913.4[环境科学与工程—安全科学]