摘要
为了获得高固相体积含量、低粘度的钛酸钡（BaTiO3）陶瓷凝胶注模用浆料,研究了粉体粒度、分散剂、球磨时间、pH值对该浆料流变性的影响。结果表明：在相同的固相体积含量下,粉体粒径3μm相比1μm的BaTiO3浆料具有较小的粘度;用聚丙烯酰胺分散剂,最佳用量相对粉体质量3‰-5‰;球磨8 h浆料的流变性最好;pH值在7-8时浆料的粘度最小。并获得固相体积含量为63%、粘度为690 mPa.s、可易于浇注的BaTiO3陶瓷浆料。
In order to get high solid volume fraction and low viscosity slurry, the influences of powder size, dispersant, ball milling time and pH values on the rheological properties of BaTiO3 ceramic slurry were investigated. The results show that slurry with a particle size of 3μm has a lower granularity than that with 1μm powder size on the same solid volume fraction. The optimum amount of polyacrylamide （PAM） to powder weight is 3‰-5‰; and the slurry has the best rheological property after eight hours of ball-milling process. Based on the study foundation, an easily cast BaTiO3 ceramic slurry with a solid volume fraction of 63% and a viscosity of 690 mPa · s was obtained.
出处
《绝缘材料》
CAS
北大核心
2009年第2期48-51,共4页
Insulating Materials
基金
国家自然科学基金资助项目(0400320237)
关键词
钛酸钡
陶瓷浆料
流变性
barium titanate （BaTiO3）
ceramic slurry
rheological properties
