膨胀型阻燃体系在沥青中协同阻燃作用的研究  

Study on Synergistic Effect of Intumescent Flame Retardant for Road Asphalt

作　　者：朱志成[1] 王洪国[1] 廖克俭[1] 邱雨佳 徐青柏[2] 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001 [2]中国石化抚顺石油化工研究院,辽宁抚顺113001

出　　处：《石油化工高等学校学报》2015年第3期37-40,共4页Journal of Petrochemical Universities

基　　金：中国石油化工股份有限公司项目资助(113092)

摘　　要：采用氧指数测定(LOI)对道路阻燃沥青中膨胀型阻燃剂(IFR)、可膨胀石墨(EG)以及两者协同体系(IFR-EG)的阻燃效果进行了考察,同时采用扫描电镜(SEM)技术手段对阻燃机理进行了分析。结果表明,EG与IFR体系复配后有很好的协同阻燃效果,制得的阻燃沥青氧指数明显升高,热稳定性能增强,燃烧后形成膨胀多孔均质碳层。扫描电镜(SEM)结果表明,膨胀型阻燃体系在道路沥青中的协同阻燃机理在于凝聚相成炭,即能促进聚合物成碳,沥青表面膨胀率明显提高。The synergism flame retardant effect of expandable graphite（EG） and intumescent flame retardant（IFR） on road asphalt was investigated by limiting oxygen index（LOI） and the flame retardant mechanism was analyzed by scanning electron microscopy（SEM）.The results revealed synergism of EG and IFR has a good flame retardant effect which greatly improved LOIs and enhanced thermal stability by forming inflation homogenous porous carbon layer after combustion. It was confirmed by SEM that flame retardant synergism mechanism of EG and IFR on road asphalt lied in the carbon condensed phase which promoted formation of carbon layer and increased surface expansion rate of asphalt.

关 键 词：阻燃沥青 可膨胀石墨 膨胀型阻燃体系 氧指数测定 扫描电镜 

分 类 号：TE626.86[石油与天然气工程—油气加工工程]