根据亨利定律,在界面上对固体中莲花型孔状的参数研究
1Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, ROC.
Heliyon
|August 9, 2023
概括
这项研究研究了单向固化过程中的孔隙形成,揭示了气体溶解和亨利·亨利的方法.
科学领域:
- 材料科学与工程 材料科学与工程
- 材料物理学的材料物理.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 具有定向性质的莲花型多孔材料在食品,生物医学和微/纳米技术中至关重要.
- 在凝固过程中了解孔隙形成机制对于控制材料性质至关重要.
- 之前的工作考虑了溶液运输,边界层和液态气体接口物理.
研究的目的:
- 严格调查控制莲花型或单孔的长度和最大半径的机制.
- 在气体溶解下单向固化过程中提供对孔形成的定量理解.
- 建立各种无维工作参数的表支持的代数预测.
主要方法:
- 利用基于无维工作参数的代数预测.
- 在液态气体界面和扬-拉普拉斯方程中纳入亨利定律.
- 分析了溶液运输,度边界层和凝固参数.
主要成果:
- 开发了一张对孔长度和最大半径的代数预测表.
- 确定了影响孔形成的关键无维参数,包括亨利定律常数,质量转移系数,分离系数和凝固率.
- 证明控制毛孔形状,特别是莲花型毛孔,是通过在冷气溶水过程中将预测的最大直径与毛孔间距相匹配来实现的.
结论:
- 该研究提供了一个全面的框架,用于理解和预测在单向固化过程中孔隙形成机制.
- 这些发现通过操纵凝固和气体溶解参数,可以对莲花型毛孔的尺寸进行定量控制.
- 这项研究有助于为各种技术应用设计和制造先进的多孔材料.
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