重生剂对老青粘合剂性能的影响的多重表征
Sen Hu1, Wentao Bu2, Kaimin Niu3
1School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Materials (Basel, Switzerland)
|September 13, 2025
概括
废弃生物油 (WBO) 通过恢复功能组,增强柔性和性能来化学复原老青. 矿物油 (MO) 仅提供物理稀释,使WBO成为可持续路面工程的优越选择.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 青老化是路面困境的主要原因,需要有效的复苏策略.
- 不同的再生剂的独特机制和有效性,如废生物油 (WBO) 和矿物油 (MO),仍然不清楚.
- 了解这些机制对于选择适当的再生剂来恢复青老化的特性至关重要.
研究的目的:
- 量化评估和比较WBO和MO对老青粘合物的修复效应.
- 阐明在再生过程的基础上存在的独特的化学和物理机制.
- 为在路面工程中选择有效的复原剂提供理论基础.
主要方法:
- 在再生之前和之后,老化的青粘合剂的综合性特征.
- 分析常规性质:穿透性,软化点和柔性.
- 先进的技术:富里埃变换红外光谱学 (FT-IR),热重力测量分析 (TG),微分扫描热量测量 (DSC) 和动态剪切形学 (DSR).
主要成果:
- 通过减少含氧组和显著提高性,WBO证明了化学修复.
- 通过粘度稀释和有限的化学影响,MO表现出物理修复.
- 通过WBO再生的青显示出改善的低温柔性和增强的高温质性能 (化因子,粘性弹性).
结论:
- 通过化学恢复极性功能组,WBO使青粘合剂复原,与MO的物理稀释相比,其性能优越.
- 该研究强调了WBO在恢复功能组和实现平衡的热质性质方面的优势.
- 研究结果支持使用WBO用于可持续道路开发,因为它为青春剂的选择提供了机制的基础.
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