高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (9): 1763.

• 研究论文 • 上一篇    下一篇

pH值对Fe-Al-Mg-MMH/钠质蒙脱土悬浮体触变性的影响

李淑萍1, 侯万国1, 戴肖南1, 胡季帆2, 李冬青3   

  1. 1. 山东大学胶体与界面化学教育部重点实验室;
    2. 山东大学物理系, 济南 250100;
    3. University of Toronto, Toronto, Ontario, Canada M 5S 3G8
  • 收稿日期:2001-08-03 出版日期:2002-09-24 发布日期:2002-09-24
  • 通讯作者: 侯万国(1964年出生),男,博士,教授,博士生导师,主要从事胶体化学研究.E-mail:wghou@sdu.edu.cn E-mail:wghou@sdu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29873026);教育部重点实验室访问学者基金;骨干教师基金资助

The Influence of pH on the Thixotropy of Ferric Aluminum Magnesium Hydroxide/Montmorillonite Suspension

LI Shu-Ping1, HOU Wan-Guo1, DAI Xiao-Nan1, Hu Ji-Fan2, LI Dong-Qing3   

  1. 1. Key Laboratoryf or Colloidand Interface Chemistryof Education Ministry;
    2. Department of Physics, Shandong University, Jinan 250100, China;
    3. Universityof Toronto, Toronto, Ontario, Canada M5S3G8
  • Received:2001-08-03 Online:2002-09-24 Published:2002-09-24

PDF (PC)

被引次数

24

摘要： 研究了pH值对Fe-Al-Mg型混合金属氢氧化物/钠质蒙脱土(简称MMH/MT)悬浮体触变性的影响.发现pH值能影响其触变性类型:m(MMH)/m(MT)(下文中以R表示)较低时(0,0.013和0.051),随着pH增高,体系有由负触变性-复合触变性-正触变性转变的趋势;而R较高的体系(R=0.091),随pH的增高,体系由复合触变性向负触变性转化.探讨了各种触变性产生的原因和pH的影响机理.

关键词: 混合金属氢氧化物, 蒙脱土, 分散体系, 触变性, 流变性

Abstract: In this paper, we studied the influence of pHon the thixotropy of MMH/MTsuspension, and it was found that pHcould affect the type of thixotropy: when the mass ratio of MMHto MT(R) was relatively low(0, 0.012 and 0.051), with pHrising slowly, the suspension changed from negative thixotropy to complex thixotropy, then finally to positive thixotropy; when m(MMH)/m(MT) was relatively high(0.091), with pHrising gradually, the suspension changed from complex thixotropy to negative thixotropy. The mechanism of thixotropy is also discussed.

Key words: Mixed metal layered hydroxide, Montmorillonite, Suspension, Thixotropy, Rheology

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