研究生: |
張耀元 Yao-yuan Chang |
---|---|
論文名稱: |
高溫熔融玻璃之表面張力測量 Surface Tension Measurement of Melting Glasses |
指導教授: |
林析右
Shi-yow Lin |
口試委員: |
陳崇賢
Chorng-shyan Chern 蔡獻逸 none |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 66 |
中文關鍵詞: | 懸垂液滴法 、固著液滴法 、表面張力 、高溫熔融玻璃 |
外文關鍵詞: | pendant drop, sessile drop, surfaec tension, melting glasses |
相關次數: | 點閱:393 下載:2 |
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摘要
主研究擬自行組裝一測量熔融玻璃液滴之表面張力量測系統。表面張力之量測乃使用固著液滴和懸垂液滴兩種方法。論文第五章並對兩方法之測量準確度進行分析與比較。
首先自行組裝一適用於高溫熔融玻璃液滴之量測裝置、撰寫連續取像程式和液滴邊界自動搜尋程式、建立固著液滴/懸垂液滴之張力量測方法,繼而探討熔融玻璃液滴表面張力隨溫度之變化情形。
使用懸垂液滴法可測得熔融玻璃相當準確的張力值(±10 mN/m);固著液滴則非為熔融玻璃張力量測的好方法(±50 至 ±220 mN/m),其測量誤差與固著液滴之大小有關。
Abstract
A system for the measurement of surface tension of melting glasses is developed in this work. The methods used are the sessile and pendant drop tensiometry. The accuracy of tension measurement is compared and discussed at the end of this thesis.
An apparatus for measuring the melting glasses at temperature ranging between 800 and 1600 oC is built first. A program for acquiring drop images continuously and for locating the edge coordinates is then developed. After that, this tensiometer using the sessile/pendant drop is used for the study of the dependency of temperature on the surface tension.
The measurement error of surface tension for using a pendant drop is around 10 mN/m. The accuracy for using a sessile drop is worse. The measurement error is around 50 – 220 mN/m, which is dependent upon the drop volume of the sessile drop.
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