十溴二苯乙烷阻燃反应型常温沥青的研究  

Research on reactive cold mixed flame retardant asphalt modified by decabromodiphenylethane

作　　者：李九苏[1] 王平 王争愿 娄梦雷 方克俭 石扬 LI Jiu-su;WANG Ping;WANG Zheng-yuan;LOU Meng-lei;FANG Ke-jian;SHI Yang(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410114

出　　处：《长沙理工大学学报（自然科学版）》2020年第2期26-32,共7页Journal of Changsha University of Science and Technology:Natural Science

基　　金：长沙市科技特派员项目(CSKJ2017)。

摘　　要：基于一种自研反应型常温阻燃沥青,对十溴二苯乙烷(DBDPE)阻燃反应型常温沥青的阻燃效果和阻燃作用机理进行了研究。通过扫描电镜试验、红外光谱试验、热分析试验,研究阻燃剂在反应型常温沥青中的分散状态、相容性和热失重行为,并通过对比反应型常温沥青和反应型常温阻燃沥青的热解规律,揭示阻燃机理。氧指数测试结果表明:该反应型常温阻燃沥青氧指数可达26%;扫描电镜试验结果表明:阻燃剂在常温沥青中具有良好的分散性;红外光谱试验结果表明:阻燃剂DBDPE与反应型常温沥青未发生化学反应,属于物理混溶,且两者之间具有良好的相容性;热分析试验结果表明:DBDPE以气相阻燃机理为主,兼具凝聚相阻燃作用,DBDPE使反应型常温阻燃沥青终止分解温度从641.5℃提高到800℃以上,热流率峰值从-22.7 mW/mg降低到-16.7 mW/mg。Based on a self-developed reactive cold mixed flame retardant asphalt,the flame retardant effect and mechanism of decabromodiphenylethane(DBDPE)flame retardant reactive cold mixed asphalt were studied.Scanning electron microscope test,infrared spectrum test and thermal analysis test were used to study the dispersion state,compatibility and thermal weight loss behavior of the flame retardant in reactive cold mixed asphalt,and the flame retardant mechanism was revealed compared with the pyrolysis law of reactive cold mixed asphalt and reactive cold mixed flame retardant asphalt.The oxygen index test results show that the oxygen index parameter of the reactive cold mixed flame retardant asphalt can reach 26%.Scanning electron microscope test results show that the flame retardant has good dispensability in reactive cold mixed asphalt.Infrared spectrum test results show that the flame retardant DBDPE does not chemically react with cold mixed asphalt,which is a physical blend with good compatibility between them.Thermal analysis test results show that DBDPE is mainly based on the gas-phase flame retardant mechanism,but also plays a solid-phase role.DBDPE increases the final decomposition temperature of reactive cold mixed flame retardant asphalt from 641.5℃to more than 800℃,and the peak value of heat flow rate is reduced from-22.7 mW/mg to-16.7 mW/mg.

关 键 词：十溴二苯乙烷 反应型常温阻燃沥青 分散性 相容性 热解规律 阻燃机理 

分 类 号：U414[交通运输工程—道路与铁道工程]