多功能防凝表面,增强耐用性
Yi Zhang1,2, Weiwei Yan1,2, Yanwen Lin3
1School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China.
ACS applied materials & interfaces
|March 8, 2024
概括
这项研究开发了一种新的凝材料,用于在超低温度下有效的抗结冰. 凝表现出长时间的结延迟和低冰粘度,这对于恶劣的环境至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 低温生化技术 低温生化技术
背景情况:
- 开发具有低冰粘度和持久抗冰性能的材料对于超低温环境 (≤-30°C) 至关重要.
- 现有的解决方案在极寒和长时间使用下经常面临维持性能的挑战.
研究的目的:
- 为在超低温度下提供一种新的凝材料,用于有效的抗结冰应用.
- 为了研究开发的凝的冰附着性,冷延迟和耐用性.
主要方法:
- 使用聚合物矩阵 (聚氨和烯胺的共聚物) 和乙烯基醇 (EG) 作为抗结冰剂合成了凝材料.
- 通过在-30°C下进行滴滴冷延迟测试来评估抗结冰性能.
- 在-10°C和-50°C测量冰的粘附强度.
- 通过重复的冰化/脱冰周期和机械划痕测试来评估耐用性.
主要成果:
- 凝在-30°C时表现出长时间的滴滴冷延迟,约为322秒.
- 冰的粘附强度在-10°C时为1.1kPa,在-50°C时为39.8kPa.
- 该材料表现出极好的耐用性,在25个循环和划痕测试后,保持冰粘合力低于20.0kPa.
- EG与聚合物矩阵之间的键增强了热耐用性,减少了EG的耗尽.
结论:
- 开发的凝材料在恶劣的超低温环境中显示出抗结冰应用的巨大潜力.
- 它独特的组成和特性为极地地区和类似条件的挑战提供了有前途的解决方案.
- 材料的耐用性和持续的抗结冰性能归因于凝结构内的协同相互作用.
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