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材料工程  2008 

超声波辅助制备单分散金属包覆聚苯乙烯导电微球

, PP. 63-67

Keywords: 超声波,金属包覆,单分散导电微球,化学镀镍,镀金

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Abstract:

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。

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