醇──水体系表面张力的模型参数

Group Theory Model Parameters of Surface Tension for the Al- cohol-Water System

研究得到醇－水体系表面张力的群论模型参数随温度变化规律。按此规律可推算任一温度下醇－水体系全组成范围内的表面张力。通过甲醇－水和乙醇——－水体系实验数据检验，平均绝对误差（ＡＡＤ）为５．３６×１０－４Ｎ／ｍ，平均相对误差（ＡＲＤ）为１．６９％。结果令人满意。

In this paper, a changing law between temperature and group theory model parameters of the alcohol-water system has been obtained. The law is employell to calculated the surface tension under any one temperature. We test these model parameters with surface tension experimental data for methnol-water and ethnolwater system,the overall average ab- soiute deviation(AAD)and average relative deviation(ARD)at 182 data sets are respectively 5.36×10-4N/ m and 1.69%. It is rare that such good estirnated results are obtained for the alcohol-water systems.