不同分散剂在压电陶瓷浆料制备中的作用  

The role of different dispersant on slurry of piezoelectric ceramics

作　　者：杜景红[1] 周平[2] 史庆南[1] 严继康[1] 甘国友[1] 

机构地区：[1]昆明理工大学材料与冶金工程学院,云南昆明650093 [2]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《功能材料》2007年第A02期754-756,共3页Journal of Functional Materials

基　　金：云南省自然科学基金资助项目（2003E0010Q,2002E0008Q）;云南省教育厅基金资助项目（6Y0150D）.

摘　　要：高固相、低粘度浆料的获得是凝胶注模成型工艺实现的关键，而分散剂在浆料制备中作用至关重要，采用柠檬酸三胺（TAC）和聚甲基丙烯酸胺（PMAA-NH4）作为压电陶瓷PMN-PZT浆料的分散剂，讨论了两种分散剂对浆料稳定性和流变性的影响。对加入分散剂前后的PMN-PZT浆料进行粒度测定和扫描电镜分析，结果表明：两种分散剂均能减少陶瓷浆料中的颗粒团聚，使颗粒分散更均匀，PMAA-NH4的分散效果优于TAC。Preparing slurry with high solid loading and low viscostity is the key problem of gelcasting,and dispersant is one of the most important effects on slurry .In this paper, triammonium citrate （TAC）and polymethacrylic acid ammonium （PMAA-NH4）were used as dispersants of PMN-PZT piezoelectric ceramics slurry. The effects of dispersant on slurry stability and theological properties were investigated. The results of laser particle size analysis and scanning electron microscopy indicated that two dispersants could reduce the concentration of ceramic slurry and make ceramic particle well-dispersed. Because the system with PMAA-NH4 excels that with TAC.

关 键 词：凝胶注模 分散剂 PMN-PZT 浆料 

分 类 号：TN304[电子电信—物理电子学]