关于氧修饰青粘合剂及其混合物的制备和性能的研究
Xiaodong Liu1,2, Zhiheng Wu1, Zhaohui Min1
1School of Transportation, Southeast University, Nanjing 211189, China.
Materials (Basel, Switzerland)
|June 19, 2024
概括
开发了一种具有延长储备时间的新型环氧改性青粘合剂,用于长寿命路面. 这种材料表现出优越的强度,耐用性和抗和裂纹的耐用性,性能优于传统的SBS改性青.
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.
- 聚合物化学 聚合物化学
背景情况:
- 环氧基改性青粘合剂对于钢甲板路面和长寿命应用至关重要.
- 当前环氧修饰粘合剂的有限储备时间阻碍了在路面工程中广泛使用.
研究的目的:
- 开发一种具有延长储备时间的新型环氧改性青粘合剂.
- 为了优化准备温度,以平衡施工时间,强度和延长.
- 在青混合物中评估新粘合剂的性能和耐用性.
主要方法:
- 优化氧基改性青粘合剂的制备温度.
- 材料性能测试包括拉伸强度和故障时的延伸.
- 青混合物性能测试,用于高温,水稳定性和低温裂纹.
- 使用激光共聚焦显微镜进行微相结构分析.
- 疲劳测试,以评估长期耐用性.
主要成果:
- 140°C的最佳制备温度产生了超过120分钟的储备时间,拉伸强度为2.22MPa,故障延伸率为216%.
- 粘合剂表现出优异的高温蚀性,水稳定性和低温抗裂能力.
- 均的微相分布表明青和环氧树脂之间很大的兼容性,即使在老化后.
- 与SBS改性青混合物相比,环氧改性青混合物的疲劳寿命显著增加 (276-435%).
结论:
- 开发的环氧改性青粘合剂为短期储备时间限制提供了可行的解决方案.
- 该材料符合严格的铺路环氧标准,并显示出出色的机械性能和耐用性.
- 这种新型粘合剂对于长寿命的道路路面应用非常有前途,特别是在钢甲板路面上.
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