【摘要】 对于水解聚丙烯酰胺的一价金属离子和二价金属离子的混合盐水体系,提出二价阳离子对一价阳离子降低特性粘数的等效系数概念．发现这一系数仅与二价阳离子的离子强度分数有关，并可用三次多项式描述．经该系数修正的通用MHS方程式不仅仍保留了本文（Ⅰ）报原方程式的形式,而且由此修正式预测的特性粘数值与实验值吻合良好.此外还观察到阴离子Cl^-、SO₄^2-和HCO₃^-对特性粘数没有影响，而CO₃^2-却使其略有增大．更多还原

【Abstract】 A concept of equivalent coefficient is proposed to describe further decreasing of intrinsic viscosities of hydrolyzed polyacrylamide─monovalent metal ions solution by the introduction of bivalent ions.It is found that equivalent coefficient is only dependent on the ionic strength fraction of bivalentmetal ions and their relationship can be expressed in a cubic polynomial.The universal MHS equation modified by equivalent coefficient still keeps the original form of the equation in Part（Ⅰ） of this series of papers and the intrinsic viscosities predicted by this modified MHS equation are in good agreement with the experimental data.In addition,it is observed that the anions such as Cl_-,SO₄^2- and HCO₃^- have no influence on the intrinsic viscosities,but Co₃^2- causes it to increase slightly.更多还原