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粘度和动态表面张力测量:适合测量的准则
Vivek Kumar1, Jsm Quintero1, Aleksey Baldygin1
1Interfacial Science and Surface Engineering Lab (iSSELab), Department of Mechanical Engineering, University of Alberta, Edmonton, T6G 1H9, AB, Canada.
Journal of colloid and interface science
|January 29, 2026
概括
了解液体粘度是准确测量表面张力的关键. 这项研究为选择最佳方法和最小表面年龄提供了准则,以获得精确的动态和静态表面张力数据,这对于涂料和3D打印等应用至关重要.
科学领域:
- 物理化学 物理化学
- 表面科学是一门学科.
- 流体动力学 流体动力学
背景情况:
- 动态表面张力对于液体中的界面现象至关重要.
- 精确的表面张力测量需要了解接口达到平衡 (放松时间) 的时间.
- 粘度会影响放松时间,影响测量表面张力值的准确性.
研究的目的:
- 通过实验确定最小的表面年龄,以便在不同粘度的流体中准确地测量动态和静态的表面张力.
- 提出一个指导方针,包括一个相图,用于选择最佳的测量方法和最小可实现的表面年龄.
- 为了确保精确的表面张力测量,在各种应用中独立于粘度效应.
主要方法:
- 使用悬挂滴法,威廉米板法和气泡压力法实验确定最小表面年龄.
- 分析粘度如何影响表面张力测量的放松时间.
- 开发一个相图,以指导方法选择和表面年龄的确定.
主要成果:
- 确定了流体粘度与准确地测量表面张力所需的最低表面年龄之间的关系.
- 证明了受粘度影响的放松时间决定了可达到的最小表面年龄.
- 验证了用于动态和静态表面张力测定的三种常用方法 (悬浮滴,威廉米板,气泡压力).
结论:
- 提出了新的指导方针和相图,以帮助选择最合适的方法和最小的表面年龄,以准确地测量表面张力,不论粘度如何.
- 这种工具对各种应用非常有价值,包括3D打印服装,喷涂涂料和涂料.
- 这些发现使用户能够获得可靠的动态和静态表面张力数据,不受粘度诱导的错误.
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