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聚电解质分散剂对Y-TZP悬浮液性能的影响

王浚; 孙静; 高濂   

  1. 上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室; 上海 200050
  • 收稿日期:1998-04-02 修回日期:1998-05-27 出版日期:1999-04-20 网络出版日期:1999-04-20

Influence of Polyelectrolyte Dispersants on Properties of Y-TZP Suspensions

WANG Jun; SUN Jing; GAO Lian   

  1. State Key Lab of High Performance Ceramics Superfine Microstructure Studies; Shanghai institute of Ceramics Shanghai 200050 China
  • Received:1998-04-02 Revised:1998-05-27 Published:1999-04-20 Online:1999-04-20

摘要: 通过聚电解质聚丙烯酸铵(NH4PAA)和聚甲基丙烯酸铵(NH4PMAA)的合成与在Y-TZP粉体上的等温吸附实验及红外分析发现,悬浮微粒的表面状态由于聚电解质的吸附而得到改善;ζ电位测定表明,阴离子型分散剂使粉体的等电点(IEP)降低,浆料的流变性能也因为分散剂的加入而有了明显的改善.

关键词: 聚电解质, 氧化锆, 浆料, 流变性

Abstract: Polyelectrolyte dispersants NH4PAA and NH4PMAA were synthesized by controlling proper reaction parameters.Isotherm adsorption and IR spectra of Y-TZP suspensions indicated that optimum content of dispersant was 2 wt% at pH 10. Surface structure was obviously affected by the absorbed polymer.The zeta potential and rheology of Y-TZP suspensions were investigated. Low viscosity Y-TZP suspensions with a solids loading of 47 vol% was obtained by adding NH4PAA as dispersant.

Key words: polyelectrolyte, Y-TZP, suspensions, rheology

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