高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (9): 1578.

• 研究简报 • 上一篇    下一篇

Mg-Al-MMH-高岭土分散体系触变性研究

戴肖南, 侯万国, 李淑萍, 王新芳   

  1. 山东大学胶体与界面化学教育部重点实验室, 济南 250100
  • 收稿日期:2000-09-19 出版日期:2001-09-24 发布日期:2001-09-24
  • 通讯作者: 侯万国(1964年出生),男,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)资助

Studies on the Thixotropy of Magnesium Aluminum Hydroxide-Kaolinite Suspension

DAI Xiao-Nan, HOU Wan-Guo, LI Shu-Ping, WANG Xin-Fang   

  1. Key Laboratory for Colloid and Interface Chemistry of the Educational Ministry, Shandong University, Jinan 250100, China
  • Received:2000-09-19 Online:2001-09-24 Published:2001-09-24

关键词: 混合金属氢氧化物, 高岭土, 触变性, 分散体系, 层状二元氢氧化物

Abstract: The thixotropy of suspension, the rheological properties change with the increase of shear time, is a complicated rheological phenomenon. The-shear thinning and the shear thickening phenomena, i.e., positive thixotropy and negative thixotropy, were observed respectively in the previous studies. Recently we found a novel thixotropic phenomenon, described as "complex thixotropy", during studying the thixotropic phenomenon of magnesium aluminum hydroxide montmorillonite suspension. The study of thixotropy of the aqueous suspension consisting of magnesium aluminum hydroxide(Mg-Al-MMH)possessing permanent positive and Kaolinite possessing permanent negative charges is reported. The suspensions studied may display a positive thixotropy and complex phenomenon successively in various Mg-Al-MMH/kaolinite ratios 0-0.16 examined. The effect of shear rate( DL)used in measuring viscosity on the thixotropy of the suspension was investigated, and the mechanism of the thixotropy was discussed.

Key words: Mixed metal layered hydroxide, Kaolinite, Thixoropy, Suspension, Layered double hydroxides

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