阻燃SBS改性沥青的制备及性能  

Preparation and Properties of Flame-retarded SBS Modified Asphalt

作　　者：余剑英[1] 罗小锋[1] 吴少鹏[1] 曾旋[1] 丛培良[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉430070

出　　处：《中国公路学报》2007年第2期35-39,共5页China Journal of Highway and Transport

基　　金：国家自然科学基金项目(50573036)

摘　　要：研究了SBS对沥青的燃烧性能及复合阻燃剂对SBS改性沥青的阻燃性能与物理性能的影响,并通过动态剪切流变仪和DSC-TG试验对阻燃SBS改性沥青的流变性能和阻燃机理进行了分析。试验结果表明:SBS的加入使基质沥青的氧指数降低;复合阻燃剂可显著提高SBS改性沥青的阻燃性能,并可提高改性沥青的车辙因子和热储存稳定性;当添加的阻燃剂与基质沥青的质量比为10%时,改性沥青可成为自熄性材料,并具有较好的物理性能;复合阻燃剂的加入可提高改性沥青的热分解温度和开始燃烧温度。The influence of SBS on flame property of asphalt and the influence of a compound flame-retarder on flame-retardancy property and physical properties of SBS modified asphalt were studied. Rheological properties and flame-retarded mechanism of flame-retarded SBS modified asphalt were studied by dynamic shear rheometer （DSR） and DSC-TG test. The test results show that SBS reduces oxygen index of base asphalt; flame-retarded property of SBS modified asphalt is improved by adding compound flame-retarder remarkably. Rut factor and storage stability of SBS modified asphalt are improved too. When the dosage of compound flame-retarder is 10%, the SBS modified asphalt becomes to a self-quench material with good physical properties. Heat decomposition temperature and initial burning temperature of SBS modified asphalt can be risen by adding compound flame-retarder.

关 键 词：道路工程 阻燃SBS改性沥青 试验研究 阻燃机理 氧指数 车辙因子 

分 类 号：U414.1[交通运输工程—道路与铁道工程]