热聚合-氧化法制备高β树脂改性沥青

发布时间：2018-10-26 14:21

【摘要】：以中温沥青为原料,通过溶剂萃取沉降分离获得低喹啉不溶物含量(QI0.1%)的精制沥青。对精制沥青进行热聚合-空气氧化改性处理,得到高β树脂含量的改性沥青。经特定热聚合条件处理后,研究了空气氧化阶段的反应温度、氧化时间和空气流量对沥青改性的影响。实验结果表明,在空气氧化阶段,当氧化温度为280℃,氧化时间为2h,空气流量为0.04m~3/h时,可以获得软化点为220℃、甲苯不溶物为61.59%、喹啉不溶物为4.35%、结焦值为78.44%,β树脂含量为57.24%的优质改性沥青。
[Abstract]:The refined asphalt with low quinoline insoluble content (QI0.1%) was obtained by solvent extraction and sedimentation separation from intermediate temperature asphalt. The modified asphalt with high 尾-resin content was prepared by thermal polymerization and air oxidation modification. The effects of reaction temperature, oxidation time and air flow rate on the modification of asphalt were studied. The results show that when the oxidation temperature is 280 鈩，

本文编号：2296015