X7R特性瓷粉水基流延成型制备镍电极多层陶瓷电容器的研究  

Aqueous Tape-casting of X7R Ceramic Powder to Prepare Ni Electrode-multilayer Ceramic Capacitor

作　　者：曹秀华[1] 王炼石[1] 胡建华[1] 

机构地区：[1]华南理工大学材料科学与工程学院

出　　处：《材料工程》2006年第12期21-23,39,共4页Journal of Materials Engineering

基　　金：广东省自然科学基金资助项目(5300938)

摘　　要：以聚丙烯酸酯乳液为粘合剂,采用水基流延成型制备镍电极多层陶瓷电容器(Ni-MLCC)。研究了水性粘合剂适合X7R瓷粉流延成型的粘度特性和热稳定性,用扫描电子显微镜(SEM)分析了所得膜片和电容器的微观结构,并对所制备电容器的电性能进行了测试。结果表明:水性聚丙烯酸酯粘合剂具有剪切稀薄的粘度特性,热分解温度低,能够满足流延成型的需求。水基流延成型制备膜片表面光滑,无缺陷,瓷粉在粘合剂中分散均匀。所制备Ni-MLCC的电极连续性好。Ni electrode multilayer ceramic capacitor （Ni-MLCC） was prepared by aqueous tape-casting of X7R with acrylic emulsion as binders. Viscosity properties and thermal stability of acrylic binders were investigated. Scan Electronic Microscope （SEM） was used to analysis microstructure of green sheets and Ni-MLCC. Electronic properties of Ni-MLCC were also tested. The results showed that aqueous acrylic binders had shear-thinning properties suitable for tape-casting of ceramic powders. And low decomposition temperature was another good property for preparing Ni-MLCC. The green sheets had smooth surface without defect. Ceramic powders were dispersed uniformly in green sheets. The electrode of Ni-MLCC had excellent continuity.

关 键 词：X7R 聚丙烯酸酯乳液 水基流延成型 Ni—MLCC 

分 类 号：TN6[电子电信—电路与系统] TQ31[化学工程—高聚物工业]