用LDPE/EVA/SBS复合颗粒修改的干处理青混合物的机制和性能特征
Zhengwei Yi1, Junhong Jiang1, Xiaoxuan Du2
1School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China.
Nanomaterials (Basel, Switzerland)
|February 26, 2026
概括
这项研究使用SBS/回收LDPE/EVA开发了复合材料改性颗粒 (CMP),用于青改性. 最优的8%CMP剂量显著改善了青性能,提高了道路耐用性和疲劳寿命.
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.
- 聚合物科学 聚合物科学
背景情况:
- 青改造对于提高路面性能至关重要.
- 回收塑料为材料提升提供了一种可持续的方法.
- 开发有效的复合材料修饰剂是提高青耐用性的关键.
研究的目的:
- 准备和评估SBS/回收LDPE/EVA复合物改性颗粒 (CMP) 用于使用干燥工艺方法修改青.
- 为了确定青混合物中CMP的最佳剂量和成分.
- 调查CMP对青的修形学,微观结构和道路性能的影响.
主要方法:
- 在干燥过程中制备SBS/回收LDPE/EVA复合物改性颗粒 (CMP).
- 传统的性能测试 (例如,透测试) 以确定最佳的CMP剂量.
- 改性青的风学和微观结构分析.
- 评估含有CMP的青混合物的道路性能.
主要成果:
- 最佳的CMP剂量被确定为青质量的8%.
- CMP形成一个统一的弹性网络,增强高温和低温性能,疲劳寿命,热稳定性和抗变形性.
- 观察到显著的改善:动态稳定性增加284.4%,疲劳寿命延长60.1%.
- 最佳的SBS/LDPE/EVA比率被确定为1:1:1.
结论:
- 干燥过程中制备的CMP通过物理混合显著提高了青性能.
- "骨架-青颗粒"的多相结构是改善道路性能的关键.
- SBS/回收LDPE/EVA复合材料改造技术显示出可持续路面施工的相当大的实际工程潜力.
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