填料对LDHs/SBS改性沥青涂盖料老化性能的影响  

Effect of Fillers on Aging Properties of LDHs/SBS Modified Asphalt Coating

作　　者：徐松[1] 但维[1] 李汶卒[1] 余剑英[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《武汉理工大学学报》2013年第4期41-44,共4页Journal of Wuhan University of Technology

基　　金：国家科技支撑计划(2011BAE28B04)

摘　　要：分别采用滑石粉、粉煤灰作为填料,制备了LDHs(层状双羟基复合金属氢氧化物)/SBS改性沥青涂盖料,研究了填料对LDHs/SBS改性沥青涂盖料物理性能和老化性能的影响。结果表明:以滑石粉为填料的LDHs/SBS改性沥青涂盖料具有更高的软化点,表现出较好的耐热性;而以粉煤灰为填料的LDHs/SBS改性沥青涂盖料具有更好的低温柔性,且经过紫外老化和热氧老化后,其软化点增量和低温柔度降低量均小于以滑石粉为填料的LDHs/SBS改性沥青涂盖料,表现出更好的耐低温性能和耐紫外光、热氧老化性能。Layered double hydroxides （LDHs）/SBS modified asphalt coating was prepared by melt blending with filler of talcum powder or fly ash. The effects of fillers on physical and aging properties of LDHs/SBS modified asphalt coating were investigated. The results show that the softening point of coating of LDHs/SBS modified asphalt containing talcum powder is higher,which indicates the better heat resistance, while the coating of LDHs/SBS modified asphalt containing fly ash shows better low temperature flexibility, and the softening point increment and low temperature flexibility decre- ment are both lower than that containing talcum powder after ultraviolet aging and thermal-oxidative aging, which implies the better resistance to low temperature,ultraviolet light and thermal-oxidation.

关 键 词：SBS改性沥青 层状双羟基复合金属氢氧化物 滑石粉 粉煤灰 

分 类 号：TU573[建筑科学—建筑技术科学]