制备高性能多聚氨酸和在水力混凝土保护中的应用
Weicai Yang1, Junle Su2, Longhui Zhu2
1Institute of Water Conservancy and Hydroelectric Power Research, Beijing 100038, China.
Polymers
|March 14, 2026
概括
开发持久的聚尿素涂层是基础设施保护的关键. 一种新的聚乙烯聚尿素涂层 (PAE-PTMEG) 显示出优越的机械强度,耐水性,以及对碳化和离子的保护.
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:
- 水力混凝土基础设施面临水,碳化和离子的退化.
- 高性能保护涂层对于延长基础设施寿命至关重要.
- 聚乙聚尿素涂层提供了增强耐用性的潜力.
研究的目的:
- 设计和评估用于混凝土基础设施保护的新型聚乙烯聚尿素涂层.
- 为了研究软段结构对涂层性能的影响.
- 在各种降解条件下评估配方涂层 (PAE-C) 的性能.
主要方法:
- 使用不同的软片段 (PTMEG和PPG) 合成两种聚乙烯聚尿素涂层 (PAE-PTMEG和PAE-PPG).
- 机械性能 (抗拉强度,延长),吸水和固化时间的表征.
- 对配制的PAE-C涂层进行评估,以防水,离子透,耐碳化和抗.
主要成果:
- 与PAE-PPG相比,PAE-PTMEG涂层表现出更高的反应性和更短的固化时间.
- PAE-PTMEG表现出优越的机械性能 (43.8 MPa的抗拉强度,646.1%的延长) 和出色的耐水性 (<1%的吸收).
- 配制的PAE-C涂层符合防水标准,并且表现出对离子透,碳化和 (200个周期) 的异常耐用性.
结论:
- 定制聚氨酸的软细分结构对于开发耐用涂层至关重要.
- PAE-PTMEG涂层为保护节水基础设施提供了显著的潜力.
- 这项研究为为土木工程应用创造先进的保护材料提供了途径.
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