| 纳米Y-TZP悬浮液的团聚抑制研究 |
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| 引用本文： | 刘阳桥,高濂.纳米Y-TZP悬浮液的团聚抑制研究[J].无机材料学报,2002,17(6):1292-1296. |
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| 作者姓名： | 刘阳桥 高濂 |
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| 作者单位： | 中国科学院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 |
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| 基金项目： | 国家重点基础研究发展规划项目(G199906450) |
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| 摘 要： | 研究了几种阴离子型分散剂对纳米Y－TZP水悬浮液的胶体特性、流变特性的影响，并通过等温吸附研究了分散剂与粉体的相互作用。结果发现，几种分散剂均可在粉体表面发生化学吸附，分散剂的加入使Y－TZP在碱性条件下的zeta电位由－20mV变为－40－-50mV左右。流变性测试表明，分散剂的加入使浆料流动性明显改善，粘度大大降低。最后对分散剂抑制团聚的机理进行了讨论。
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| 关 键 词： | 纳米Y－TZP悬浮液 团聚抑制 zeta电位 流变性 胶体特性 氧化钇稳定四方相氧化锆陶瓷 |
| 文章编号： | 1000-324X(2002)06-1292-05 |
| 收稿时间： | 2001-11-15 |
| 修稿时间： | 2001年11月15 |
Deflocculation Study of Nano-sized Y-TZP Suspensions |
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| LIU Yang-Qiao,GAO Lian.Deflocculation Study of Nano-sized Y-TZP Suspensions[J].Journal of Inorganic Materials,2002,17(6):1292-1296. |
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| Authors: | LIU Yang-Qiao GAO Lian |
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| Affiliation: | StateKeyLabofHighPerformanceCeramics&SuperfineMicrostructure;ShanghaiInstituteofCeramics;ChineseAcademyofSciences;Shanghai200050;China |
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| Abstract: | The influences of several anionic dispersants on the colloidal and rheological properties of nanosized Y-TZP suspensions were investigated. Isothermal adsorption was conducted to study the interaction between the dispersant and the powder. It was found that these dispersants adsorbed chemically on the powder. The zeta potential of Y-TZP powder at alkaline region changed from -20mV to -40-50mV after the addition of dispersants. Rheological measurements showed that the dispersant addition significantly enhanced the fluidity of the slurry. The deflocculation mechanism of the dispersant for the suspension was finally discussed. |
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| Keywords: | nano-Y-TZP deflocculation zeta potential rheology |
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