CIESC Journal

• RESEARCH NOTES • 上一篇    

聚乙烯醇(PVA)和聚乙二醇(PEG)对氧化铝料浆剪切屈服应力-Ph曲线的影响

曾人杰; B. RAND   

  1. a Institute of Chemistry and Chemical Engineering, University of Xiamen, Xiamen 361005,
    China
    b School of Process, Environmental and Materials Engineering, University of Leeds, Leeds
    LS2 9JT, UK
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-02-28 发布日期:2002-02-28
  • 通讯作者: 曾人杰

Effects of PVA and PEG on pH Dependent Shear Yield Stress of Concentrated Alumina
Suspensions

ZENG Renjie; B. RAND   

  1. a Institute of Chemistry and Chemical Engineering, University of Xiamen, Xiamen 361005,
    China
    b School of Process, Environmental and Materials Engineering, University of Leeds, Leeds
    LS2 9JT, UK
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-02-28 Published:2002-02-28
  • Contact: ZENG Renjie

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被引次数

1

摘要： The pH dependence of the extrapolated shear yield stress for Alcoa A16 α-Al2O3 suspensions
at the powder volume fraction of 0.27 with and without addition of both polyvinyl alcohol
(PVA) and polyethylene glycol (PEG) each at fixed 0.18% of the powder mass was studied.
With the polymer added, the full deflocculation of the suspension shifts from about pH=-4
to around pH=1.5, at which the minimum value of shear yield stress is higher than that at
pH=4. The addition of both PVA and PEG was found to prevent the filter cake from cracking.

关键词: polyvinyl alcohol;polyethylene glycol;shearing yield stress;pH value;alumina suspension

Abstract: The pH dependence of the extrapolated shear yield stress for Alcoa A16 α-Al2O3 suspensions
at the powder volume fraction of 0.27 with and without addition of both polyvinyl alcohol
(PVA) and polyethylene glycol (PEG) each at fixed 0.18% of the powder mass was studied.
With the polymer added, the full deflocculation of the suspension shifts from about pH=-4
to around pH=1.5, at which the minimum value of shear yield stress is higher than that at
pH=4. The addition of both PVA and PEG was found to prevent the filter cake from cracking.

Key words: polyvinyl alcohol, polyethylene glycol, shearing yield stress, pH value, alumina suspension

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