表面形态对结冰附着强度的影响

doi:10.7964/jdxbgxb201305027

摘要/Abstract

摘要：

以水结冰过程相变膨胀为理论基础,利用试验优化设计方案以亚克力(PMMA)为材料设计加工了凹陷形态试样,并对其进行表面水结冰附着强度测试。试验表明,PMMA表面上的凹陷形态虽然实际上增加了水(冰)与材料的接触面积(冻结界面),但部分试样结冰附着强度较光滑板附着强度有明显降低。通过对水结冰过程的形态显微观察分析指出,基体表面上的宏观凹陷形式通过水结冰的相变过程对冰/固界面的影响作用,会造成结冰附着强度的降低。

关键词: 材料表面与界面, 工程热力学, 结冰, 表面形态, 冰附着强度, 相变膨胀

Abstract:

Taking the phase expansion phenomenon of water freezing as the theoretical basis, this paper experimentally studied the ice adhesion strength on Poly(methyl methacrylate) (PMMA) surfaces with various dent morphologies. Experimental optimization design method was used to arrange the experiments. The results show that, although the dent morphology increases the contacting area between PMMA substrate and freezing water droplet, PMMA surface with certain dent morphology can reduce the ice adhesion strength. Microscopic observation and analysis of the freezing process suggest that the dent morphology on the PMMA surface influences the phase transition on ice/solid interface, which can lead to the reduction of the ice adhesion strength.

Key words: surface and interface of materials, engineering thermodynamics, ice, surface morphology, adhesion force, phase expansion

中图分类号:

TB303

曹敏, 陈廷坤, 丛茜, 金敬福. 表面形态对结冰附着强度的影响[J]. 吉林大学学报(工学版), 2013, 43(05): 1314-1319.

CAO Min, CHEN Ting-kun, CONG Qian, JIN Jing-fu. Influence of PMMA surface morphology on ice adhesion strength[J]. 吉林大学学报(工学版), 2013, 43(05): 1314-1319.

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