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。
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 slurri~, good predictions can be attained.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2009年第1期70-73,共4页
Journal of Solid Rocket Technology
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
highly concentrated suspensions
slurry
structure
critical concentration
viscoelasticity
yield stress
thixotropy
