石膏基聚苯乙烯饰面防火板的阻燃性能研究

doi:10.16265/j.cnki.issn1003-3033.2019.01.006

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (1): 31-36.doi: 10.16265/j.cnki.issn1003-3033.2019.01.006

石膏基聚苯乙烯饰面防火板的阻燃性能研究

于水军^1,2,3 教授, 魏月贝¹, 杨岱霖¹, 谢高超¹

1 河南理工大学安全科学与工程学院,河南焦作 454003;
2 煤炭安全生产河南省协同创新中心,河南焦作 454003;
3 河南省煤矿瓦斯与火灾防治重点实验室,河南焦作 454003

收稿日期:2018-10-10 修回日期:2018-12-15 出版日期:2019-01-28 发布日期:2020-11-23
作者简介:于水军 (1962—)男,河南漯河人,硕士,教授,硕士生导师,主要从事建筑节能新材料和煤矿防灭火新材料安全性能方面的研究。E-mail:yusj0509@126.com。
基金资助:
教育部长江学者和创新团队发展计划项目(IRT0618);河南省基础与前沿技术研究计划项目(082300463205)。

Study on flame-retardant properties of gypsum based self-leveling decorative fire-resistant polystyrene board

YU Shuijun^1,2,3, WEI Yuebei¹, YANG Dailin¹, XIE Gaochao¹

1 School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China;
2 Coal Production Safety Collaborative Innovation Center in Henan Province, Jiaozuo Henan 454003, China;
3 Henan Province Key Laboratory of Prevention and Curve of Methane & Fires, Jiaozuo Henan 454003, China

Received:2018-10-10 Revised:2018-12-15 Online:2019-01-28 Published:2020-11-23

摘要/Abstract

摘要： 为解决建筑外保温系统发生火灾时火焰蔓延速度快和有毒烟气产生量大等问题,以α-盐石膏和粉煤灰为基材,氢氧化镁为无机阻燃剂,聚羧酸减水剂为外加剂制作自流平砂浆;通过正交试验,研究聚苯乙烯泡沫保温板(EPS)表面涂覆自流平砂浆对其阻燃性能和耐火性能的影响。结果表明:减水剂掺量是影响氧指数(LOI)测试结果的主要因素;氢氧化镁掺量对于热释放速率峰值(pk-HRR)、总热释放量(THR)以及点燃时间(TTI)的影响尤为明显;粉煤灰取代率是影响烟密度等级的主要因素;阻燃性能好的石膏基自流平砂浆最佳配合比为水胶比为0.30,粉煤灰取代率为30%,减水剂掺量为0.2%,氢氧化镁掺量为12%,饰面阻燃处理后能明显提高EPS板材的阻燃和抑烟效果。

关键词: 聚苯乙烯泡沫保温板(EPS), 石膏基自流平砂浆, 正交试验, 饰面防火, 阻燃性能

Abstract: To solve the problem of rapid propagation of fire and the production of toxic smoke in building exterior insulation system, a kind of self-leveling mortar was made by using magnesium hydroxide as an inorganic flame retardant and polycarboxylic acid water reducer as admixture. The effect of the self-leveling mortar coated on the surface of EPS on flame-retardant properties of fire-resistant polystyrene board was studied by carrying out orthogonal test. The results show that the amount of water reducing agent can change the thickness of mortar cover by affecting the fluidity of self-leveling mortar, which is the main factor affecting the results of oxygen index (LOI) test, that among the four factors, the effect of Mg(OH)₂ content on peak heat release rate (pk-HRR), total heat release (THR) rate and ignition time (TTI) is especially obvious, that the replacement rate of fly ash is the main factor affecting the smoke density grade, that the best proportioning of gypsum based self-leveling mortar with good flame retardance is that water binder ratio is 0.30, fly ash substitution rate is 30%, water reducing agent content is 0.2% , magnesium hydroxide content is 12%, and that the flame retardant and smoke suppression effects of EPS boards can be significantly improved by flame retardant treatment.

Key words: expanded polystyrene board (EPS), plaster based self-leveling mortar, orthogonal test, facing fire-retardant, flame retardancy

中图分类号:

X937

于水军, 魏月贝, 杨岱霖, 谢高超. 石膏基聚苯乙烯饰面防火板的阻燃性能研究[J]. 中国安全科学学报, 2019, 29(1): 31-36.

YU Shuijun, WEI Yuebei, YANG Dailin, XIE Gaochao. Study on flame-retardant properties of gypsum based self-leveling decorative fire-resistant polystyrene board[J]. China Safety Science Journal, 2019, 29(1): 31-36.

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石膏基聚苯乙烯饰面防火板的阻燃性能研究

Study on flame-retardant properties of gypsum based self-leveling decorative fire-resistant polystyrene board

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