| 高固含量Y-TZP悬浮液的流变学特性 |
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| 引用本文： | 王浚,高濂.高固含量Y-TZP悬浮液的流变学特性[J].无机材料学报,1999,14(4):651-656. |
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| 作者姓名： | 王浚 高濂 |
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| 作者单位： | 上海硅酸盐研究所高性能陶瓷; 超微结构国家重点实验室 上海 200050 |
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| 摘 要： | 采用聚丙烯酸盐（ Ｎａ Ｐ Ａ Ａ、 Ｎ Ｈ４ Ｐ Ａ Ａ） 作为分散剂， 制备了高固相含量（ ～５０ｖｏｌ％ ） 的 Ｙ Ｔ Ｚ Ｐ悬浮液研究了分散剂、粉体粒径和固含量对 Ｙ Ｔ Ｚ Ｐ 悬浮液流变学性能的影响结果表明： 分散剂的含量为１.８ｗｔ％ 时对悬浮液有最好的分散效果悬浮液的粘度随粒径的增加而降低， 高固含量浆料的流动曲线符合 Ｂｉｎｇｈａｍ 模型同时对分散剂的吸附分散机理进行了分析和讨论
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| 关 键 词： | 氧化锆 悬浮液 流变性 粘度 分散剂 |
| 收稿时间： | 1998-9-23 |
| 修稿时间： | 1998-10-26 |
Rheology of Concentrated Y TZP Aqueous Suspensions |
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| WANG Jun,GAO Lian.Rheology of Concentrated Y TZP Aqueous Suspensions[J].Journal of Inorganic Materials,1999,14(4):651-656. |
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| Authors: | WANG Jun GAO Lian |
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| Affiliation: | State Key Lab of High Performance Ceramics & Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China |
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| Abstract: | Concentrated Y-TZP aqueous suspensions(～50vol%) were prepared by employing poly acrylate(NaPAA and NH4PAA) as dispersant. Zeta potential of the suspensions was displaced to pH 2.2 by the adsorption of RCOO- group released by PAA salts in aqueous solution. The viscosity was at its lowest point when NaPAA content was 1.8 wt%. Solids loading and particle size significantly influenced the rheology of Y-TZP suspensions. Concentrated suspensions(>35vol%)were typical Bingham fluid, second newtonian plateau was observed at high shear rate. Plastic viscosity and yield value demonstrated sharp ascension in 50 vol% suspension under a shear rate of 20s-1. The appropriate particle size for preparing high solids loading Y-TZP suspensions was about 350 nm. |
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| Keywords: | zirconia suspensions rheology viscosity dispersant |
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