| Experimental study on the special shear thinning process of a kind of non-Newtonian fluid |
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| 引用本文： | CHEN HaoSheng,CHEN DaRong,WANG JiaDao & LI YongJian State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China. Experimental study on the special shear thinning process of a kind of non-Newtonian fluid[J]. 中国科学E辑(英文版), 2007, 50(2): 138-143. DOI: 10.1007/s11431-007-0022-4 |
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| 作者姓名： | CHEN HaoSheng CHEN DaRong WANG JiaDao & LI YongJian State Key Laboratory of Tribology Tsinghua University Beijing 100084 China |
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| 作者单位： | CHEN HaoSheng，CHEN DaRong，WANG JiaDao & LI YongJian State Key Laboratory of Tribology，Tsinghua University，Beijing 100084，China |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金;国家自然科学基金 |
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| 摘 要： | To study the effect of long chain molecule and surface active agent on non-Newtonian fluid properties, rheological experiments on two different fluids have been done. The first group of the fluid is the hydroxyethyl cellulose water solution, and the second is the water solution containing the mixture of dodecyl- triethyl ammonium bromide and lauryl sodium sulfate. With the increasing shear rate, shear thinning phenomenon appears in the first group of solution, and a spe- cial shear thickening-shear thinning phenomenon appears in the second group. It is considered that the special rheological phenomenon is caused by the difference between the aggregating and the departing speed of the colloidal particles formed in the fluid. The difference between the two speeds relates with the shear rate. The experiment results indicate that the rheological properties can be designed by choosing proper additives at a certain shear rate, and such a fluid with special vis- cosity variation should be included in the classification of the non-Newtonian fluid.
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Experimental study on the special shear thinning process of a kind of non-Newtonian fluid |
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| Chen HaoSheng,Chen DaRong,Wang JiaDao,Li YongJian. Experimental study on the special shear thinning process of a kind of non-Newtonian fluid[J]. Science in China(Technological Sciences), 2007, 50(2): 138-143. DOI: 10.1007/s11431-007-0022-4 |
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| Authors: | Chen HaoSheng Chen DaRong Wang JiaDao Li YongJian |
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| Affiliation: | State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China |
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| Abstract: | To study the effect of long chain molecule and surface active agent on non-Newtonian fluid properties, rheological experiments on two different fluids have been done. The first group of the fluid is the hydroxyethyl cellulose water solution, and the second is the water solution containing the mixture of dodecyl- triethyl ammonium bromide and lauryl sodium sulfate. With the increasing shear rate, shear thinning phenomenon appears in the first group of solution, and a spe- cial shear thickening-shear thinning phenomenon appears in the second group. It is considered that the special rheological phenomenon is caused by the difference between the aggregating and the departing speed of the colloidal particles formed in the fluid. The difference between the two speeds relates with the shear rate. The experiment results indicate that the rheological properties can be designed by choosing proper additives at a certain shear rate, and such a fluid with special vis- cosity variation should be included in the classification of the non-Newtonian fluid. |
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| Keywords: | non-Newtonian fluid rheology shear thinning |
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