对液体表面张力系数测量的改进

Improvement of Measuring the Liquid Surface Tension Coefficient

改进现有的对液体表面张力测量的常用方法中需要事先知道接触角的问题。将毛细管法与液饼法结合,将这两种测量方法的仪器用同一种材料制造,可以消去接触角,更加方便地测出表面张力系数。改进后的方法误差最大不超过1%,操作简便,测量精度高。

The problem that the contact angle need to be known in advance is solved in existing methods of measuring the liquid surface tension.Combining the capillary method with the liquid-cake method,the instruments of the two measurement methods are made of the same material,then the contact angle can be eliminated and makes it easier to measure the surface tension coefficient.The maximum error of the improved method is less than 1%.This method has the advantages of simple operation and the high measuring accuracy.