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Citation: DAI Xiao-Nan, HOU Wan-Guo, LI Jun-E, ZHANG Shu-Qin. Effects of Composition,pH and Electrolyte on the Rheology of Mg-Fe-HTlc/Kaolin Suspensions[J]. Chinese Journal of Applied Chemistry, ;2005, 22(5): 475-478. shu

Effects of Composition,pH and Electrolyte on the Rheology of Mg-Fe-HTlc/Kaolin Suspensions

1.
a Key Laboratory for Colloid and Interface Chemistry of EducationMinistry, Shandong University, Jinan 250100;
2.
b Department of Chemistry, Dezhou University, Dezhou

Corresponding author: HOU Wan-Guo,
Received Date: 29 July 2004
Available Online: 16 October 2004
Fund Project: 国家自然科学基金(20273041) (20273041)教育部高等学校博士学科点专项科研基金(20040422047)资助项目 (20040422047)

The rheology of Mg-Fe-HTlc/kaolin suspensions and that of pure kaolin suspensions were studied.The effects of mass ratio of HTlc to kaolin (R),pH,electrolyte (NaCl,MgCl₂) and partially hydrolyzed polyacrylamide (PHPA) on the shear stress (τ) of the suspensions were studied.The results show that the τ value of Mg-Fe-HTlc/kaolin suspension decreased first and then increased with the increase of R.The increase in pH made the τ value of pure kaolin suspension increase first (pH<8) and then decrease (pH>8),but the τ value of Mg-Fe HTlc/kaolin suspension increased with the increase of pH all the time.The τ value of pure kaolin suspension decreased with addition of electrolytes.However,the τ value of HTlc/kaolin suspension with R=0.129 increased with the concentration of electrolytes.The τ values of the two suspensions were reduced by PHPA.The effect mechanism was discussed.
- hydrotalcite-like compound,
- Kaolin,
- shear stress,
- suspension,
- rheology
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