表面活性剂浓度对泡沫堆积高度的影响及参数分析

摘要

The effect of surfactant concentration and related parameters on foam height have been stud-ied experimentally. Experimental results show that the foam height increases with the increasing appar-ent gas velocity, while the foam height increases with the decreasing surface tension. Besides, the foam height increases with the increasing liquid viscosity when the liquid viscosity varies in a certain range. However, the foam height decreases when the liquid viscosity is too large. The stabilizing effect of mi-celle on foam is not obvious when the surfactant concentration exceeds the critical micelle concentra-tion, and the foam height increases rapidly while the surfactant concentration exceeds the"critical ac-tion concentration". We obtain foam height formula with different range to surfactant concentration by the regression empirical formulas.%基于实验方法,研究了表面活性剂浓度及相关参数对泡沫堆积高度的影响.实验结果表明:减小表面张力,增大气体表观速率有利于提高泡沫堆积高度;在一定范围内增大黏度有利于提高泡沫堆积高度,但黏度过大时泡沫堆积高度反而减小;当表面活性剂浓度超过临界胶束浓度(cmc)后,胶团稳定泡沫的作用不明显;当表面活性剂浓度超过"临界作用浓度"后,泡沫堆积高度迅速增大.通过回归试验数据,分别获得不同表面活性剂浓度范围内的泡沫堆积高度公式.