对具有不同粘度的水-甘油滴进行实验研究,对超冷的超水表面产生影响
Shu-Rong Gao1, Shi-Hua Shi1, Lian-Kai Shi1
1Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China.
Langmuir : the ACS journal of surfaces and colloids
|June 11, 2025
概括
从超疏水表面反弹的滴滴是抗结冰的关键. 这项研究表明粘度和温度影响滴水接触时间和反弹,创建一个相位图来预测冰的形成.
科学领域:
- 表面科学是一门科学.
- 流体动力学 流体动力学
- 材料科学是一种材料科学.
背景情况:
- 在超疏水表面上的滴滴反弹对于抗结冰技术至关重要.
- 液体粘度和表面温度显著影响液滴与表面的相互作用.
研究的目的:
- 研究液体粘度和表面温度对水-糖滴反弹动态的影响.
- 建立一个相图,将Ohnesorge数 (Oh),温度 (T) 和韦伯数 (We) 与反弹结果相关联.
- 在寒冷的超疏水表面上扩展滴滴接触时间的理论模型.
主要方法:
- 对水 - 糖滴对冷的超水表面的影响的实验研究.
- 滴滴扩散和退缩时间的分析.
- 能量分析以开发一个Oh-T-We相位图.
- 对粘性滴滴接触时间的理论模型的扩展.
主要成果:
- 对于高粘度滴的粘度,衰退时间随着粘度的增加而增加.
- 表面温度显著影响退缩时间,特别是在低温下.
- 一个Oh-T-We相位图识别了完全反弹,部分反弹和完全粘附的区域.
- 接触时间的理论模型被扩展到更广泛的粘度范围 (0.0021 ≤ Oh ≤ 0.0051).
结论:
- 粘度和表面温度是控制滴滴反弹和超表面粘附的关键参数.
- 开发的相位图和扩展的理论模型为设计有效的抗结冰表面提供了定量工具.
- 这项研究提供了一种新的方法来理解和预测用于增强抗结冰应用的滴滴行为.
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