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化工新型材料  2018, Vol. 46 Issue (10): 170-172    
  科学研究 本期目录 | 过刊浏览 | 高级检索 |
不同粒径剪切增稠液的制备及流变性能研究
范佳慧1,曹海建1*,徐山青1,陈红霞2,黄晓梅2
1.南通大学纺织服装学院,南通226019;
2.南通大学分析测试中心,南通226019
Study on preparation and rheological behavior of shear thickening fluid with different particle diameter
Fan Jianhui1,Cao Haijian1,Xu Shanqing1,Chen Hongxia2,Huang Xiaomei2
1.School of Textile & Clothing,Nantong University,Nantong 226019;
2.Analysis & Testing Center,Nantong University,Nantong 226019
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摘要 分别以直径12nm、2μm的SiO2作为分散相,聚乙二醇-200(PEG-200)作为分散介质,通过机械和超声震荡的方式制备不同体系的剪切增稠液(STF)。采用透射电镜观察纳米SiO2粒子的外观形貌及团聚情况,采用流变仪测试STF的稳态流变性能。结果表明:直径12nm的SiO2粒子团聚现象明显,直径2μm的SiO2粒子没有团聚现象;STF黏度随着剪切速率的增加呈现先变稀、再增稠的现象,表现为非牛顿流体特性;随着纳米SiO2含量的增加,STF的临界黏度随之增加,而临界剪切速率则随之下降;直径12nm的SiO2粒子制备的STF体系剪切增稠效果好于2μm。
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范佳慧
曹海建
徐山青
陈红霞
黄晓梅
关键词:  纳米SiO2粒子  剪切增稠液  聚乙二醇-200  临界剪切速率  临界黏度    
Abstract: Nano silica particles (nano-SiO2 particles) with diameter of 12nm and 2μm used as the dispersed phase and PEG-200 used as the dispersion medium,shear thickening fluid (STF) with different system was prepared by mechanical stirring and ultrasonic shock.The morphology and agglomeration of nano-SiO2 particles were observed by JEM-2100(HR) type transmission electron microscopy,and the steady state and dynamic rheological properties of STF were tested by DHR rheometer.The results showed that the agglomeration of particles with diameter of 12nm was obvious,and that of 2μm was not obvious.The viscosity of STF exhibited firstly thinning and secondly thickening with the increase of shear velocity,which manifested as non-Newtonian fluid properties.The critical viscosity increased and critical shear velocity decreased of STF with increasing the concentration of particle.Shear thickening effect of particles with 12nm was better than that with 2μm.
Key words:  nano silica particle (nano-SiO2 particle)    shear thickening fluid (STF)    PEG-200    critical shear velocity    critical viscosity
                    发布日期:  2018-11-06      期的出版日期:  2018-11-06
基金资助: 江苏省政策引导类计划(BY2016053-02);江苏省高校自然科学研究项目(16KJA430009和16KJB540001);南通市应用基础研究—工业(GY12015018);南通大学引进人才科研启动费项目(15R08)
通讯作者:  曹海建,博士,副教授,主要从事纺织复合材料的制备及性能研究。   
作者简介:  范佳慧(1993-),男,硕士研究生,主要从事功能纺织品的开发与应用研究。
引用本文:    
范佳慧,曹海建,徐山青,陈红霞,黄晓梅. 不同粒径剪切增稠液的制备及流变性能研究[J]. 化工新型材料, 2018, 46(10): 170-172.
Fan Jianhui,Cao Haijian,Xu Shanqing,Chen Hongxia,Huang Xiaomei. Study on preparation and rheological behavior of shear thickening fluid with different particle diameter. New Chemical Materials, 2018, 46(10): 170-172.
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http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2018/V46/I10/170
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