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碳化硅晶须的分散稳定性
作者:熊昆 徐光亮 李松涛 宋春军  
单位:西南科技大学新材料研究所 材料科学与工程学院 中国科学院合肥物质研究院固体物理研究所  
关键词:碳化硅晶须  分散  聚乙烯亚胺  聚丙烯酰胺 
分类号:O613.7
出版年,卷(期):页码:2008,36(10):1432-1436
DOI:
摘要:

以蒸馏水、乙醇与乙二醇的混合液为分散介质,聚乙烯亚胺(polyethylene imine,PEI)、非离子型聚丙烯酰胺(nonionic polyacry lamide,PAM)为分散剂,对碳化硅晶须(SiCw)悬浮液的均匀稳定分散性进行研究。结果表明:以75%(体积分数)乙二醇与25%(体积分数)无水乙醇的混合液为分散介质,分散效果最佳;添加1.5%(质量分数)PEI时,SiCw能在pH=4~10的范围内实现均匀稳定分散,添加0.1%~0.3%(质量分数)PAM时,仅在pH=8~10,能实现SiCw均匀稳定分散。

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The dispersion stability of silicon carbide whisker (SiCw) was researched using distilled water and mixtures containing ethanediol and ethanol as the dispersing medium, and using polyethylene imine (PEI) and nonionic polyacry lamide (PAM) as the dispersants. The results indicate that the dispersing state of SiCw is the best by using the mixtures as the dispersing medium; in these conditions, the dispersing medium contained 75% (in volume) ethanediol and 25% (in volume) ethanol. SiCw can be dispersed homo-geneously at pH=4 to 10 by using 1.5% (in mass) PEI as the dispersant; however, with 0.1% to 0.3% (in mass) PAM as the dispersant, it can only be dispersed well at pH=8 to 10.

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基金项目:
国防基础科研(A3120061156)资助项目。
作者简介:
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参考文献:

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