疏水缔合聚合物流变学测量方法研究I:稳态剪切黏度

Study on the rheological measurement method of hydrophobic associating polymer solution Ⅰ:steadystate shear viscosity

为了获得准确和具有重复性的疏水缔合聚合物溶液稳态剪切黏度测试结果,分析了溶液的结构流体特征对于流变测试结果的影响,讨论了HAWSP溶液结构的破坏/恢复动态平衡与稳态剪切黏度测试结果的关系。用RS600流变仪和Brookfield DV-Ⅲ流变仪分别研究了预剪切段对于稳态剪切黏度的影响规律,实验结果表明:在两种流变仪上,通过合理优化预剪切段都可以获得重复性较好的稳态剪切黏度测试结果,实验平均误差小于3%。

In order to obtain accurate and repeatable steady state shear viscosity of hydrophobic associating polymer solution,the influence of solution structure properties on rheological measurement result were analyzed firstly,then the relationship between dynamic equilibrium of destroying/rebuilding reversible process for hydrophobic associating water-soluble polymer（HAWSP） solution and the measurement result of steadystate shear viscosity has been discussed.The effect of pre-shearing stage on steady shear viscosity carried out on both RS600 and Brookfield DV-Ⅲ rheometers respectively.The results showed that well repeatable steady state shear viscosity testing results could reached by rationally optimizing pre-shearing stage on the both rheometers,and test errors of steady shear viscosity were smaller than 3%.