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在10~70℃下,1~300 s~(-1)剪切速率范围内,对质量分数为0.001%~0.015%的CTAC/NaSal表面活性剂水溶液(CTAC与NaSal摩尔比为1:1)的流变性质进行了测试分析。研究发现,表面活性剂水溶液在不同的浓度下均存在临界剪切速率和临界温度,且温度和剪切对黏度的作用强度不同。对于同一溶液,温度和剪切的协同作用使黏度变化复杂,对于浓度相对高的溶液出现高温、高剪切区二次增稠的现象。
The aqueous solution of CTAC / NaSal surfactant with the mass fraction of 0.001% ~ 0.015% (molar ratio of CTAC to NaSal is 1: 1) was prepared from 10 ~ 70 ℃ under the shear rate of 1 ~ 300 s ~ The rheological properties of the test analysis. It is found that the critical shear rate and critical temperature exist in the surfactant aqueous solution at different concentrations, and the effects of temperature and shear on the viscosity are different. For the same solution, the synergistic effect of temperature and shear makes the viscosity change complicated, and the phenomenon of secondary thickening in high temperature and high shear zone occurs in the solution with relatively high concentration.