易于制备的多西洛改性青粘合剂表现出增强的性能
Jinhua Qian1, Fuying Dong1, Xiaohui Chen1
1School of Traffic and Civil Engineering, Shandong Jiaotong University, Jinan 250357, China.
Polymers
|September 28, 2023
概括
这项研究引入了一种新的聚氧改性青 (HO-PDMS),该青与青化学结合,提高了兼容性和储存稳定性. 修改后的青显示了现代人行道的性能,特别是在极端温度下.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 土木工程 土木工程是指土木工程.
背景情况:
- 聚合物改性青提高了路面的性能.
- 现代青路面需要先进的材料特性.
研究的目的:
- 开发和描述一种新型的多氧改性青.
- 为了评估改性青的性能改进.
主要方法:
- 在140°C时混合在基础青中,用基终结的聚氨酸 (HO-PDMS).
- 使用FT-IR,GPC,DSC,光显微镜和分离试验进行表征.
- 通过动态剪切流体计 (DSR) 和曲束流体计 (BBR) 进行性能评估.
主要成果:
- HO-PDMS与青化学结合,确保兼容性和稳定性.
- 改性青表现出改善的低温和高温性能,热稳定性和疏水性.
- 在特定的HO-PDMS剂量下,降低玻璃过渡温度 (Tg) -12.8°C,更高的化参数,以及最佳的刚度/爬行率.
结论:
- 与传统青相比,聚氧改性青提供了更高的性能.
- 改性青适用于苛刻的青路面应用,特别是那些需要抵御温度波动的应用.
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