文献类型：期刊文献

中文题名：剪切稀化悬浮体触变性的研究

英文题名：Study on the Thixotropy Simulation of Shear-thinning Suspensions

作者：杨化桂[1];张辉[1];古宏晨[1];方图南[1]

机构：[1]华东理工大学技术化学物理研究所,国家教委超细材料反应工程开放实验室,上海20023

年份：1999

卷号：13

期号：6

起止页码：506

中文期刊名：高校化学工程学报

外文期刊名：Journal of Chemical Engineering of Chinese Universities

收录：CSTPCD;;EI(收录号：2000045125590);Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金!29636010

语种：中文

中文关键词：悬浮体流变学;触变性;屈服应力;剪切稀化悬浮体

外文关键词：rheology of suspension; thixotropy; yield stress; steady shear viscosity

摘要：假设在剪切状态下结构参数变化的速率服从一级动力学关系，在此基础上导出适用于剪切稀化悬浮体的数学模型。该模型能够定量表征悬浮体非定态的流变性能（如触变性），并可求得悬浮体系的材料函数，进而可以推知定态的流变性能（如剪切粘度）。用二氧化钛水浆及泥石流触变环的实验数据拟合触变环．求取模型参数，模型预示的定态剪切粘度与实验值吻合良好。
Based on the phenomenological model of shear-thinning suspensions, a method for simulatingthixotropic loop was proposed by assuming the structure parameters tO be followed with the first-orderkinetic equation. The model could express the unsteady rheological properties of suspension (i. e. thixotropy).Some parameters could be got by simulating thixotropic loop. Based on the modal and parameters, steadyrheological properties (i. e. shear viscosity) were be calculated. Therefore, the relationship betweenthixotropy and steady shear viscosity was established according to the model.By simulating the thixotropic loop,the steady shear viscosity and yield stress were found and comparedwith the data from experiment of titanium dioxide and debris/water pastes.