沥青高模量外掺剂热稳定性能的DSC试验分析
发布时间：2019-05-23 20:03
【摘要】：对常用的4种沥青用高模量外掺剂,采用差示扫描量热法(DSC)测量其热流曲线及热流值,分析不同温度下4种外掺剂的聚集态及其随温度的变化情况,以确定高模量外掺剂的高温性能和感温性.对比4种外掺剂的DSC图谱形状变化及热流值后发现,外掺剂ADD-4没有明显的吸热峰,其聚合物没有固定的聚集态转变温度范围;外掺剂ADD-1聚集态的转变较外掺剂ADD-2,ADD-3复杂,在高温区有第2个吸热峰出现,使其自身高温性能更稳定.
[Abstract]:The heat flow curves and heat flow values of four kinds of asphalt admixtures with high modulus were measured by differential scanning Calorimeter (DSC). The aggregation states of the four admixtures at different temperatures and their variation with temperature were analyzed. To determine the high temperature performance and temperature sensitivity of high modulus admixture. After comparing the shape change and heat flow value of DSC spectra of the four admixtures, it was found that the admixture ADD-4 had no obvious endothermic peak and the polymer had no fixed temperature range of aggregation transition. The transformation of aggregation state of ADD-1 is more complex than that of ADD-2,ADD-3, and the second endothermic peak appears in the high temperature region, which makes its high temperature performance more stable.
【作者单位】： 东北林业大学土木工程学院;Department
【分类号】：U414
本文编号：2484187
[Abstract]:The heat flow curves and heat flow values of four kinds of asphalt admixtures with high modulus were measured by differential scanning Calorimeter (DSC). The aggregation states of the four admixtures at different temperatures and their variation with temperature were analyzed. To determine the high temperature performance and temperature sensitivity of high modulus admixture. After comparing the shape change and heat flow value of DSC spectra of the four admixtures, it was found that the admixture ADD-4 had no obvious endothermic peak and the polymer had no fixed temperature range of aggregation transition. The transformation of aggregation state of ADD-1 is more complex than that of ADD-2,ADD-3, and the second endothermic peak appears in the high temperature region, which makes its high temperature performance more stable.
【作者单位】： 东北林业大学土木工程学院;Department
【分类号】：U414
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