磷-硼协效阻燃的云南松燃烧性能和热解动力学

doi:10.16265/j.cnki.issn1003-3033.2018.07.007

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (7): 38-44.doi: 10.16265/j.cnki.issn1003-3033.2018.07.007

磷-硼协效阻燃的云南松燃烧性能和热解动力学

崔飞¹ 讲师, 颜龙²

1 西南林业大学消防学院,云南昆明 650224;
2 中南大学防灾科学与安全技术研究所,湖南长沙 410075

收稿日期:2018-03-31 修回日期:2018-05-31 出版日期:2018-07-28 发布日期:2020-11-25
作者简介:崔飞(1980—),男,河南长垣人,硕士,讲师,主要从事建筑防火设计方面的教学与科研工作。E-mail:cuifei@swfu.edu.cn。
基金资助:
国家自然科学基金资助(31260180);中国博士后科学基金资助(2017M612587)。

Flame retardancy and pyrolysis kinetics of Pinus yunnanensisflame-retarded synergically by NH₄H₂PO₄ and borax

CUI Fei¹, YAN Long²

1 College of Fire Science and Technology,Southwest Forestry University,Kunming Yunnan 650224,China;
2 Institute of Disaster Prevention Science and Safety Technology,Central South University,Changsha Hunan 410075,China

Received:2018-03-31 Revised:2018-05-31 Online:2018-07-28 Published:2020-11-25

摘要/Abstract

摘要： 为探讨磷-硼协效阻燃体系对云南松燃烧性能和热解动力学的影响,利用极限氧指数(LOI)测定仪、木垛法、锥形量热仪和热重(TG)分析等手段,开展有关磷酸二氢铵和硼砂协效阻燃的云南松的燃烧性能和热解特性的试验研究,并运用Kissinger和 Flynn-Wall-Ozawa模型分析其热解动力学。结果表明:磷酸二氢铵和硼砂复配使用对云南松有较好的协效阻燃作用;当磷酸二氢铵和硼砂质量比为4∶1时,所阻燃的云南松的热释放速率(HRR)和总释放热(THR)相比于纯云南松分别下降了62.8%和56.5%,LOI高达66.5%;磷酸二氢铵和硼砂协效体系通过提高云南松热解的表观活化能有效增强了云南松的高温稳定性、成炭能力和阻燃性能。

关键词: 云南松, 磷酸二氢铵, 硼砂, 阻燃性能, 热解动力学

Abstract: In order to investigate the synergistic effect between phosphorous and boron elements,the flammability and pyrolysis characteristics of Pinus yunanensis with ammonium dihydrogen phosphate and borax were assessed by using limited oxygen index (LOI) method,wood stack method,cone calorimeter test and thermo-gravimetric (TG) analysis method,and the pyrolysis kinetics of the materials was analyzed by Kissinger and Flynn-Wall-Ozawa models.The results show that the combination of ammonium dihydrogen phosphate and borax has good synergistic flame retardant effect.When the mass ratio of ammonium dihydrogen phosphate to borax is 4∶1,the heat release rate(HRR),total heat release(THR) of the flame retarded wood are 62.8% and 56.5%,respectively,lower than those of untreated wood,and the LOI value reaches to 66.5%,and the combination of ammonium dihydrogen phosphate and borax improves the activation energy of Pinus yunnanensis calculated by Kissinger and Flynn-Wall-Ozawa methods,thus effectively enhancing the high-temperature stability,char-forming ability,and flame retardancy.

Key words: Pinus yunanensis, ammonium dihydrogen phosphate, borax, flame retardancy, pyrolysis kinetics

中图分类号:

X932

崔飞, 颜龙. 磷-硼协效阻燃的云南松燃烧性能和热解动力学[J]. 中国安全科学学报, 2018, 28(7): 38-44.

CUI Fei, YAN Long. Flame retardancy and pyrolysis kinetics of Pinus yunnanensisflame-retarded synergically by NH₄H₂PO₄ and borax[J]. China Safety Science Journal, 2018, 28(7): 38-44.

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磷-硼协效阻燃的云南松燃烧性能和热解动力学

Flame retardancy and pyrolysis kinetics of Pinus yunnanensisflame-retarded synergically by NH₄H₂PO₄ and borax

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Flame retardancy and pyrolysis kinetics of Pinus yunnanensisflame-retarded synergically by NH₄H₂PO₄ and borax