Shear Thickening Fluids Based on Additives with Different Concentrations and Molecular Chain Lengths  

添加剂的含量和分子链长对剪切增稠液性能的影响

作　　者：徐钰蕾[1] 龚兴龙[1] 彭超[1] 孙英强[2] 江万权[2] 张忠[3] 

机构地区：[1]中国科学院材料力学行为与设计国家重点实验室,中国科学技术大学近代力学系,合肥230027 [2]中国科学技术大学化学系,合肥230026 [3]国家纳米科学中心,北京100080

出　　处：《Chinese Journal of Chemical Physics》2010年第3期342-346,I0002,共6页化学物理学报（英文）

摘　　要：Shear thickening fluids （STFs） based on additives with different concentrations and molecular chain lengths were investigated. STF samples were prepared with silica and additive dispersed in polyethylene glycol （PEG） 400, where three types of additives with different molecular chain lengths of PEG4000, PEG6000, and PEG10000 were used. For PEG10000, different concentrations, including 0, 1%, 3%, and 5%, were selected to study the influences of additive concentrations. Rheological properties of the samples were measured with a rheometer. The results show that the shear thickening effect was significantly enhanced with the increase of the concentration and the molecular chain length of additives. The mechanism of enhancement was quantitatively explained with the formation of large particles clusters.

关 键 词：Shear thickening fluid ADDITIVE Polyethylene glycol CONCENTRATION Molecular chain length 

分 类 号：O[理学]