聚甲丙烯酸铵酯Ⅱ黏度测定方法

摘要

Objective To study the rheology behavior of methacrylic acid copolymer Ⅱ and establish a method to measure its dynamic viscosity. Methods Dynamic viscosity was determined by malvem kinexus ultra concentric cylinder rheometer at a shear rate of 10 s-1 and 20 ℃. Results Methacrylic acid copolymer Ⅱ was newtonian fluid, whose dynamic viscosity was 5. 06 mPa·s (RSD = 0. 25% , n = 30). Conclusion The method is convenient, accurate and of good repeatability to determine dynamic viscosity of methacrylic acid copolymer Ⅱ.%目的 研究聚甲丙烯酸铵酯Ⅱ的流体特性并建立其动力黏度测定方法.方法 采用马尔文Kinexus Ultra 同轴圆筒式流变仪,温度20℃,剪切速率10 s-1条件下测定动力黏度.结果 6％聚甲丙烯酸铵酯Ⅱ的75％乙醇溶液为牛顿流体,动力黏度为5.06 mPa·s,30次测定的RSD为0.25％.结论 该方法简便、准确、重复性好,适用于测定聚甲丙烯酸铵酯Ⅱ的动力黏度.