摘要
研究了浆料搅拌时间、分散剂含量、粉体含量和p H值等对碳化硅水基浆料粘度的影响。结果表明,水基浆料的粘度随搅拌时间的增加而减小,超过24 h后趋于平稳;水基浆料粘度随分散剂含量的增加而减小,但超过一定含量时反而增大;随着Si C水基浆料中粉体含量的逐渐增加,浆料的粘度总体呈逐渐增大的趋势,粉体含量超过30%时,浆料的搅拌分散时间会延长1.5倍;p H值高于5.5后,水基浆料的粘度随p H值的增加急剧提高,超过8.15时略有下降。通过优化工艺参数,可制备出粘度低于1.0 Pa·s、粉体含量为30%的Si C水基浆料。
The influence of preparation processes such as stirring time of slurry,dispersant content,solids loading and p H value on viscosity of Si C aqueous paste were investigated. The results show that the slurry viscosity decreases with increasing stirring time and levels off when the stirring time exceeds 24 hours; the slurry viscosity decreases with increasing dispersant content but increases when the dispersant content exceeds a certain quantity; when the solid loading is higher than 30%,the slurry viscosity increases sharply and doesn＇t decrease even if the dispersant content is increased; when the p H value is above5. 5,the slurry viscosity increases rapidly with increasing p H value and slightly declines when the p H value exceeds 8. 15. By optimizing the preparation processes,the Si C aqueous slurry with viscosity of about 1. 0 Pa·s and 30% solid loading could be prepared.
出处
《材料开发与应用》
CAS
2015年第4期55-59,共5页
Development and Application of Materials
基金
甘肃省高校基本科研业务资助
关键词
碳化硅水基浆料
粘度
制备工艺
流动性
SiC aqueous slurry
viscosity
preparation process
flowability
