表面活性剂对潜水超水表面寿命的影响
1Department of Mechanical Engineering, University of Massachusetts Dartmouth, Dartmouth, Massachusetts 02747, United States.
Langmuir : the ACS journal of surfaces and colloids
|December 24, 2025
概括
表面活性剂可以通过降低低度的气体扩散来延长超表面 (SHS) 的寿命. 然而,高度可以引发湿过渡,显著降低SHS的耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 流体动力学 流体动力学
背景情况:
- 超水表面 (SHS) 依赖于被困的气体层来实现它们的防水性能.
- 气体从SHS扩散到周围的液体中,限制了它们的使用寿命.
- 表面活性剂在调节气体转移和SHS寿命方面的作用尚不清楚.
研究的目的:
- 通过实验确定表面活性剂对SHS.气体质量转移的影响.
- 研究表面活性剂如何在不同的条件下影响SHS的寿命.
- 探索表面活性剂度和SHS纹理对表面稳定性的影响.
主要方法:
- 在不同度下测试四种不同的表面活性剂 (1-pentanol,Triton X-100,2-propanol,甲醇).
- 在三个不同的表面纹理上评估SHS寿命:微孔,微柱子和随机粗度.
- 量化质量转移速率和观察湿过渡.
主要成果:
- 与纯水相比,低度的表面活性剂显著增加了SHS的寿命,寿命随度增加而增加.
- 高度的表面活性剂导致SHS寿命急剧下降,可能是由于诱导湿过渡.
- 这些影响在所有测试的表面活性剂和SHS纹理中一致.
结论:
- 表面活性剂普遍降低从SHS的气体质量转移系数.
- 低度的表面活性剂增强了SHS的寿命,为表面稳定提供了一种方法.
- 计算表面活性剂的存在对于预测SHS在实际应用中的性能至关重要.
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