Shear Thickening Fluids Based on Additives with Different Concentrations and Molecular Chain Lengths |
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| Authors: | Yu-lei Xu Xing-long Gong Chao Peng Ying-qiang Sun Wan-quan Jiang Zhong Zhang |
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| Affiliation: | CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China;Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;National Center for Nanoscience and Technology, Beijing 100080, China |
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| Abstract: | ![]()
Shear thickening fluids (STFs) based on additives with different concentrations and molec-ular 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 mech-anism of enhancement was quantitatively explained with the formation of large particles clusters. |
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| Keywords: | Shear thickening fluid Additive Polyethylene glycol Concentration Molec-ular chain length |
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