| 表面改性对超细氧化锆悬浮体的流变性影响 |
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| 引用本文： | 刘忆明,易中周.表面改性对超细氧化锆悬浮体的流变性影响[J].蒙自师范高等专科学校学报,2004,2(4):4-7. |
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| 作者姓名： | 刘忆明 易中周 |
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| 作者单位： | [1]保山师范高等专科学校化学系，云南保山678000 [2]红河学院化学系，云南蒙自661100 |
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| 摘 要： | 通过酸洗和离子交换方法对5.2mol%Y2O3部分稳定超细氧化锆粉料进行处理,以除去氧化锆粉体表面的可溶性杂质高价正离子,从而改变粉料表面吸附状态和荷电状况,并研究了表面改性对氧化锆粉料胶体特性及其悬浮体的流变性的影响.实验结果表明,酸洗和离子交换方法处理后可有效地提高了粒子的Zeta电位,选择合适的分散剂和调整悬浮体pH值在8～10之间可以大幅度提高悬浮体的固相含量,最终可获得固相含量为45vol.%的适于凝胶注模成型浇注的氧化锆浓悬浮体.
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| 关 键 词： | 氧化锆 表面改性 流变性 凝胶注模成型 |
| 文章编号： | 1008-9128(2004)04-0004-04 |
| 修稿时间： | 2004年6月10日 |
Effects of Surface Modification on Rheological Property of the Zirconium Superfine Powder Suspensions |
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| Liu Yi-ming,Yi Zhong-zhou.Effects of Surface Modification on Rheological Property of the Zirconium Superfine Powder Suspensions[J].Journal of Mengzi Teachers' College,2004,2(4):4-7. |
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| Authors: | Liu Yi-ming Yi Zhong-zhou |
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| Institution: | Liu Yi-ming~1,Yi Zhong-zhou ~2 |
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| Abstract: | Surface modification of ZrO2 particles of 5.2mol%Y2O3 sectionstabilization by acid leaching and an ion-exchange process, so as to remove the dissolubility impurity high positive ions of the body face of zirconium powder. Its effects on the colloidal behavior and the flow properties of ZrO2 suspensions were investigated. The experimental results indicate that The Zeta potential of ZrO2 particles increases efficiently and the flow properties of the concentrated ZrO2 suspension significantly improve when the pH value of the suspensions is adjusted to 8～10 and with appropriate sedimentation. Ultimately, the 45vol.% ZrO2 suspension suitable for gel-casting was prepared. |
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| Keywords: | zirconium surface modification rheological property gel-casting |
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