【摘要】：以中溫瀝青為原料,通過溶劑萃取沉降分離獲得低喹啉不溶物含量(QI0.1%)的精制瀝青。對(duì)精制瀝青進(jìn)行熱聚合-空氣氧化改性處理,得到高β樹脂含量的改性瀝青。經(jīng)特定熱聚合條件處理后,研究了空氣氧化階段的反應(yīng)溫度、氧化時(shí)間和空氣流量對(duì)瀝青改性的影響。實(shí)驗(yàn)結(jié)果表明,在空氣氧化階段,當(dāng)氧化溫度為280℃,氧化時(shí)間為2h,空氣流量為0.04m~3/h時(shí),可以獲得軟化點(diǎn)為220℃、甲苯不溶物為61.59%、喹啉不溶物為4.35%、結(jié)焦值為78.44%,β樹脂含量為57.24%的優(yōu)質(zhì)改性瀝青。
[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，

本文編號(hào)：2296015