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| 流场对超浓悬浮体系的内部结构影响 | |
| 引用本文： | 郭营,王刚,许元泽,俞炜,周持兴.流场对超浓悬浮体系的内部结构影响[J].固体火箭技术,2009,32(1). |
| 作者姓名： | 郭营 王刚 许元泽 俞炜 周持兴 |
| 作者单位： | 1. 上海交通大学,化学化工学院,流变学研究所,上海,200240 2. 复旦大学,高分子系,上海,200433 3. 上海交通大学,化学化工学院,流变学研究所,上海,200240;复旦大学,高分子系,上海,200433 |
| 摘 要： | 研究了超浓悬浮体系的流变性质,发现在类似"临界凝胶点"的临界浓度附近出现从类液态向类固态的突变,表明体系出现完整的内部结构.触变环流变实验表明,内部结构发生了破坏和重建,与剪切速率、观测时间和松弛时间有依赖关系.采用结构化网络模型可准确描述体系的触变特性. |
| 关 键 词： | 超浓悬浮体系 药浆 结构 临界浓度 粘弹性 屈服应力 触变性 |
Effect of shear fields on internal structure of the highly concentrated suspensions |
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| GUO Ying,WANG Gang,XU Yuan-ze,YU Wei,ZHOU Chi-xing.Effect of shear fields on internal structure of the highly concentrated suspensions[J].Journal of Solid Rocket Technology,2009,32(1). | |
| Authors: | GUO Ying WANG Gang XU Yuan-ze YU Wei ZHOU Chi-xing |
| Institution: | 1.Advanced Rheology Institute;Shanghai Jiaotong University;Shanghai 200240;China;2.Department of Polymer Science and Engineering;Fudan University;Shanghai 200433;China |
| Abstract: | The rheological behavior of highly concentrated suspensions was investigated.The results show a mutation from liquid-like state to solid-like state occurs,which means that there exists an intact internal structure.The thixotropy study of the slurries internal structure under the transient shear fields indicates that the break-up and reconstruction occur in interior structure depending on the shear rate,observation time and relaxation time.By using a structural model to describe the thixotropy of the slurrie... |
| Keywords: | highly concentrated suspensions slurry structure critical concentration viscoelasticity yield stress thixotropy |
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