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利用旋转粘度计研究了四元丙烯酸酯共聚物无皂水溶胶、ＨＤＩ齐聚物及两者交联体系的流变行为，测定了三者的剪切应力（τ）～剪切速率（Ｄ）、表观粘度（ηａ）～剪切速率（Ｄ）及ｌｇτ～ｌｇＤ之间的关系。结果表明，水溶胶、ＨＤＩ齐聚物的流动指数ｎ近似于１，属牛顿型流体，而水溶胶＼ＨＤＩ齐聚物交联体系的ｎ＜１，属非牛顿型流体，并且具有触变性。
The rheological behavior of the quaternary acrylate copolymer soap-free water-soluble sol, HDI oligomer and their cross-linking system was investigated by rotational viscometer. The shear stress (τ) ~ shear rate (D) , The apparent viscosity (ηa) ~ shear rate (D) and lgτ ~ lgD relationship between. The results show that the flow index n of hydrosol and HDI oligomers is approximately 1 and belongs to the Newtonian fluid. However, n <1 of the hydrosol HDI oligomer cross-linking system belongs to non-Newtonian fluid and has thixotropy.