超声波辅助制备单分散金属包覆聚苯乙烯导电微球  

Synthesis of Monodisperse Metal-coated Polystyrene Conductive Microspheres with Ultrasonic Assisted

作　　者：宋丹[1] 周际东[1] 姜炜[1] 张小娟[1] 李凤生[1] 

机构地区：[1]南京理工大学国家特种超细粉体工程技术研究中心,南京210094

出　　处：《材料工程》2008年第11期63-67,共5页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(50602024)

摘　　要：为了制备单分散聚合物基导电微球,以交联聚苯乙烯(PS)微球为基体,通过超声波辅助的化学镀方法制备了单分散Ni/PS导电微球,接着采用置换法在导电微球表面包覆一层导电性更好的Au层。采用FI-IR,SEM,EDS,XRD等测试方法分别对PS微球及导电微球的官能团变化、形貌、元素组成及晶型结构进行表征,结果表明:超声的引入可以改善导电微球的分散性;导电微球形貌规则,镀层连续均一且有纳米级"丘状"突起。经过金层包覆后导电微球的体电阻率可达到6.9×10-3Ω.cm,可以满足ACF中导电微球的使用要求。Monodisperse Ni/polystyrene conductive microspheres were prepared by electroless plating with ultrosonic assisted. Then a film of Au was coated onto the surface of the Ni/PS conductive microspheres via displacement reaction. The transformation of functional group, modality, elemental composition, crystalline structure of the resin microspheres and conductive microspheres were characterize by FI-IR , SEM, EDS and XRD. The results show that ultrasonic wave improved the dispersion of conductive mierospheres, which have regular sphericity. The coating was sequential and uniform with nanosized mound-like protuberance on it. After coated by Au film, the electrical resistivity of conductive microspheres can get to 6.9× 10^-3Ω ·cm, which can satisfy the parameter requirement of ACF.

关 键 词：超声波 金属包覆 单分散导电微球 化学镀镍 镀金 

分 类 号：TM243[一般工业技术—材料科学与工程] V258[电气工程—电工理论与新技术]