双微囊为高响应效率的自愈水性聚合物-水泥涂层的多尺度损伤
Chenyang Liu1, Zhicheng Sun1, Shouzheng Jiao2
1Beijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, China.
Polymers
|January 11, 2024
概括
研究人员开发了新的双自我修复微囊,以防止水性聚合物水泥涂层的裂. 这些微囊提高了涂层的耐用性和在具有挑战性的环境中的性能.
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.
- 聚合物化学 聚合物化学
背景情况:
- 水性聚合物水泥涂层是环保的建筑材料,但在干燥过程中容易发生裂.
- 裂损害了屏障性能,并限制了这些涂料的应用.
- 现有的涂料缺乏有效的自我修复机制,以解决干燥引起的损伤.
研究的目的:
- 开发和评估一种新型的双自我修复微囊,用于水性聚合物水泥涂层.
- 为了提高这些涂料的裂纹愈合能力和耐用性.
- 为改善复杂条件下的涂料使用寿命提供可扩展的解决方案.
主要方法:
- 通过两步的现场聚合制造,制造具有凝外和含有环氧树脂 (EP) 治愈剂的酸- (TA-Cu) 双结构的双微囊.
- 将开发的微囊纳入水性聚合物-水泥涂层配方.
- 研究微囊在涂层干燥和固化过程中的机械启动效率和自我愈合性能.
主要成果:
- 成功制造了带有EP治疗剂的双自我修复微囊.
- 在涂层干燥过程中,凝外的脱水会提高机械启动效率.
- 微囊有效地治愈了宏观损伤,显著减少了裂.
- 观察到更好的屏障性能和延长涂层的使用寿命.
结论:
- 开发的双自我修复微囊为水性聚合物水泥涂层的裂纹预防提供了有前途的解决方案.
- 这种方法提高了涂层的耐用性和性能,特别是在具有挑战性的干燥条件下.
- 该研究提出了一种新的方法,用于将自我修复技术集成到可持续建筑材料中.
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