纺织材料表面的接触角的测量

内容节点: 概述; 实验/设备条件; 样品提取; 实验/操作方法; 实验结果/结论; 仪器/耗材清单

This sample is an open weave material with a reasonably hydrophyllic fiber. A consequence of this is that the material can not support a sessile drop. However, its apparent absorption is due far more to its open weave than to capillary forces. Basically water "falls through" the surface more than it absorbs into it. This was verified by conducting a capillary rise test where the sample is dipped into a beaker of water and the rise of the wetted portion noted. This sample exhibited very little rise, perhaps a mm. By comparison, an ordinary paper towel (a much denser material) will have a 10 or 15mm rise within a second or two. With this behavior in mind, the following images illustrate its behavior.

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