聚氨/石灰改性青及其混合物的制备过程和性能
Jinshun Xue1, Yu Yang2, Junfeng Li2
1Hubei Key Laboratory of Vehicle-infrastructure Cooperation and Traffic Control, Xiangyang, China.; Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle, Hubei University of Arts and Science, Xiangyang, China.; School of Civil Engineering and Architecture, Hubei University of Arts and Science, Xiangyang, China.
PloS one
|July 11, 2025
概括
这项研究优化了聚氨/基改性青,以降低成本和性能. 与基础青相比,改性青显示出明显改善的耐老化性能和高温性能.
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:
- 石是肥料生产的副产品,这给处置带来了挑战.
- 青路面的成本很高,这推动了研究成本效益较高的修饰剂的研究.
- 提高青性能,特别是耐老化性能,对于路面的寿命至关重要.
研究的目的:
- 研究石在青改造中的全面利用.
- 为了优化聚氨/石膏改性的制备参数和成分.
- 评估改性青及其混合物的耐老和高温性能.
主要方法:
- 系统地研究制备过程参数 (温度,时间,切割速率,储存).
- 优化聚氨,和合剂的组成.
- 对改性青和混合物进行短期和长期老化试验.
- 高温性能和性能变化率的评估.
主要成果:
- 准备温度,储存时间,反应时间和剪切速率都影响了性能.
- 最佳参数:130°C,2000rpm,反应时间1.5小时,存储时间1.0小时.
- 推的成分:3%的A成分,1%的B成分,5%的合石膏,0.5%的合剂.
- 改性青在短期和长期老化后的性能变化分别为23.9%和42.2%较低,相比于基本青.
- 经过修改的青混合物在老化后表现出明显较低的高温性能降解.
结论:
- 聚氨/合石复合材料的修改为合石的利用提供了一个可行的途径.
- 优化改性青表现出增强的耐老化能力和优越的高温性能.
- 这种方法可以降低青路面的成本,同时满足性能要求.
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