We report a dispersion state of concentrated multiwalled carbon nanotube (MWCNT) suspensions depending on their iterative milling process. The rheological properties of concentrated suspensions prepared with different milling times were measured using a Couette-typed rotation rheometer, and their electrical characteristics were investigated via an LCR meter. The relationships of the rheological and electrical properties with the dispersion state of the MWCNT were examined. The results of both the rheological and electrical measurements indicated that the de-bundling and dispersion of the MWCNT induced by the iterative milling yielded a percolation microstructure and an electrically conductive structure.

中文翻译：

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分散状态对浓缩多壁碳纳米管悬浮液流变和电学特性的影响

我们报告了取决于其反复研磨过程的浓缩多壁碳纳米管（MWCNT）悬浮液的分散状态。使用Couette型旋转流变仪测量了在不同研磨时间下制备的浓缩悬浮液的流变特性，并通过LCR测量仪研究了它们的电特性。研究了流变学和电学性质与MWCNT分散状态的关系。流变和电学测量的结果均表明，通过反复研磨引起的MWCNT的解束和分散产生了渗流微观结构和导电结构。