论文部分内容阅读
减小EPS颗粒尺寸至小于1 mm,分散到发泡水泥中制备墙体保温材料,从而提升EPS-发泡水泥复合保温材料的防火性能,且减缓EPS-发泡水泥在点燃后的火势发展。对不同EPS颗粒尺寸下EPS-发泡水泥进行了防火性能试验,并建立了EPS-发泡水泥燃烧行为尖点突变模型,研究了EPS颗粒尺寸对防火性能及高温炉内火势发展的影响。结果表明,EPS-发泡水泥中采用尺寸为0.5~1.0 mm的颗粒较采用2.0~4.0 mm的EPS颗粒,可以有效降低内部EPS的热解速率及热解程度,提升防火性能,增强EPS-发泡水泥燃烧行为稳定性,减缓火势发展。
Reduce EPS particle size to less than 1 mm, and disperse it into foamed cement to prepare wall insulation material, so as to enhance the fireproof performance of EPS-foamed cement composite insulation material and slow the fire development of EPS-foamed cement after ignition. The EPS-foamed cement under different EPS particle size was tested for fire resistance, and a cusp catastrophe model of EPS-foamed cement burning behavior was established. The influence of EPS particle size on fire performance and fire development in high temperature furnace was studied. The results showed that EPS particles with the size of 0.5-1.0 mm were more suitable for EPS-foamed cement than 2.0-4.0 mm EPS particles, which could effectively reduce the pyrolysis rate and pyrolysis of EPS, improve the fire resistance and enhance EPS- Foam cement burning behavior stability, slowing the development of fire.