基于表面活性技术的温拌剂合成及性能研究

Study on the synthesis and performance of warm mix agent based on surfactant technology

对表面活性技术的温拌剂合成工艺及性能进行研究。结果表明,棕榈酸酰胺丙基二甲基胺的最佳合成条件为:酸胺的摩尔比1∶1.2,反应时间5 h,反应温度120℃。将合成的棕榈酸酰胺丙基二甲基胺与硫酸二甲酯按1∶1摩尔比反应,合成出季铵盐温拌剂。并采用红外光谱和元素分析法验证了结构特征。添加季铵盐温拌剂的温拌沥青混合料相比于热拌沥青混合料,能有效降低成型温度30℃,同时各项路用性能均满足现行规范要求。

The synthesis and performance of warm mix agent based on surfactant technology was studied. Results showed that the better synthesis routes was showed as below：palmitic acid and N, N-dimethyl-1, 3-propane diamine molar ratio 1 ： 1.2, reacted for 5 h, at 120 ℃. Palmitic acid amide prowl dimethyl amine and dimethyl sulfate molar ratio 1： 1, syntheised warm mix agent of quaternary ammonium salts. Its structure was characterization by IR and elemental analysis. The compaction temperature of asphalt mix- ture could decrease by 30 ℃ if the warm mix agent of quaternary ammonium salts was used. And also the pavement performance of warm mix asphalt could meet the requirement in current specification.