铌酸钾钠无铅压电陶瓷水系流延浆料的工艺研究  

Technology Study on Aqueous Tape-casting Slurry of Potassium-sodium Niobate Lead-free Piezoelectric Ceramic

作　　者：李月明[1] 刘奕君[1] 谢俊[1] 王竹梅[1] 沈宗洋[1] 谢志翔[1] 

机构地区：[1]景德镇陶瓷学院材料科学与工程学院、江西省先进陶瓷材料重点实验室,景德镇333403

出　　处：《硅酸盐通报》2015年第2期303-307,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51262011,50962007);江西省自然科学基金(20114BAB206023,20132BAB206016);江西省主要学科学术和技术带头人培养计划(2010DD01100);江西省教育厅科技落地计划(KJLD13076);景德镇市学科带头人项目

摘　　要：模版晶粒生长技术制备织构化铌酸钾钠无铅压电陶瓷是提高其压电性能的重要途径,为了获得较高的织构度,水系流延浆料的制备是关键技术。本研究以固相法合成的铌酸钾钠粉体和片状Nb2O5模板晶粒为固含量,以去离子水为溶剂,研究不同含量的分散剂、粘结剂和增塑剂对流延浆料性能的影响。研究结果表明,当粉体固含量为55wt%,分散剂PVP含量为5.5wt%,粘结剂苯丙乳液含量13.5wt%,增塑剂丙三醇含量为5.5wt%时,制备的流延浆料粘度适中,流延后可制得表面光滑、质地均匀、塑性较好、可任意卷曲的流延膜片。Template grain growth technology is an important way to improve the performance of textured of potassium sodium niobate lead-free piezoelectric ceramic. In order to obtain higher texture degree,the preparation aqueous tape-casting slurry is the key technology. In this paper,the potassium sodium niobate powders by solid phase synthesis method and flake Nb2O5 template grain as solid powder,the deionized water as solvent,the influence of different content of dispersant,binder and plasticizer on the slurry performance was studied. The results show that when the powder solid content is 55wt%,dispersant PVP content is 5. 5wt%,binder content of styrene acrylic emulsion is 13. 5wt%,plasticizer glycerin content is 5. 5wt%,the viscosity of tape-casting slurry is moderate,the good casting film with a smooth surface,homogeneous structure,good plasticity and crimpiness can be obtained.

关 键 词：铌酸钾钠 水系流延 无铅压电陶瓷 织构化 

分 类 号：TQ174[化学工程—陶瓷工业]