高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

阴离子分散剂对酸化膨润土流变性的影响

梁虎南1,2,3, 龙柱1, 皮成忠2, 杨淑蕙1, 周小凡2   

    1. 江南大学生态纺织教育部重点实验室, 无锡 214122;
    2. 南京林业大学江苏省制浆造纸科学与技术重点实验室, 南京 210037;
    3. 东北电力大学应用技术学院, 吉林 132012
  • 收稿日期:2008-06-06 修回日期:1900-01-01 出版日期:2009-03-10 发布日期:2009-03-10
  • 通讯作者: 龙柱

Effect of Anionic Dispersant on Rheological Properties of Acid-bentonite

LIANG Hu-Nan1,2,3, LONG Zhu1*, PI Cheng-Zhong2, YANG Shu-Hui1, ZHOU Xiao-Fan2   

    1. Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China;
    2. Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China;
    3. College of Applied Technology, Northeast Dianli University, Jilin 132012, China
  • Received:2008-06-06 Revised:1900-01-01 Online:2009-03-10 Published:2009-03-10
  • Contact: LONG Zhu

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被引次数

11

摘要： 研究了阴离子分散剂聚丙烯酸钠对质量分数为10%的酸化膨润土分散体系流变性的影响. 结果表明, 添加0.4%分散剂的分散体系的剪切应力、表观黏度和屈服应力最低. 其它体系流体均表现为从假塑型到胀流型流体的转变, 而含0.4%分散剂的体系始终表现为胀流型流体. 采用Herschel-Bulkley模型对各体系的流变曲线进行了拟合, 得到较好的拟合曲线, 同时探讨了酸化膨润土分散体系的流变机理.

关键词: 阴离子分散剂, 酸化膨润土, 流变性, Herschel-Bulkley模型

Abstract: The effect of anionic dispersant(sodium polyacrylate) on rheological properties for 10%(mass fraction) acid-bentonite dispersion were studied. The results show that, among dispersion containing dispersant dosage of 0.2%, 0.4%, 0.6% and 0.8%, respectively, the dispersion containing 0.4% dispersant has the lowest shear stress, apparent viscosity and yield stress. In range of studying shear rate, dispersion containing 0.4% dispersant exhibited dilatant characteristic and others transformed rheology from pseudoplastic to dilatant characteristic. The result also show that the rheograms fitting Herschel-Bulkley model are well. The mechanism of rheological properties on acid-bentonite dispersion was also discussed.

Key words: Anionic dispersant, Acid-bentonite, Rheological property, Herschel-Bulkley model

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