热解法石墨纤维镀银研究Silver Plating on Graphite Fibers by Pyrolysis
刘大鹏,欧阳琴,陈友汜,马洪波,徐敏军
LIU Da-peng,OUYANG Qin,CHEN You-si,MA Hong-bo,XU Min-jun
摘要(Abstract)：
采用含银浆液浸渍涂层和热解法在石墨纤维表面镀银,采用扫描电子显微镜、X射线能谱仪和电阻率测试仪研究了含银浆液和石墨纤维的石墨化程度对镀银结构的影响。结果表明:含质量分数5%硝酸银的聚丙烯水性乳液型浆液的使用效果最好,在石墨纤维表面形成了大量均匀分散的纳米银颗粒,大幅降低了石墨纤维的电阻率;但大幅提高浆液中硝酸银的浓度,反而会对石墨纤维表面的镀银结构产生不利影响。该方法简单、高效、容易实现连续化生产,可以制得用于金属基复合材料或具有特殊功能的石墨纤维。
Silver plating on the surface of graphite fibers was achieved by dip coating in silver containing slurries and pyrolysis. The effects of silver containing slurries and the graphitization degree of graphite fibers on the structure of plated silver were studied by scanning electron microscope, X-ray energy dispersive spectrometer and electrical resistivity tester. The results show that the polypropylene aqueous emulsion slurry with 5% silver nitrate is optimized, a large number of uniformly dispersed nano silver particles are formed on the surface of graphite fibers, and the electrical resistivity of the graphite fibers is dramatically reduced; but a substantial increase in the concentration of silver nitrate in the slurry has an adverse impact on the structure of plated silver. This method is simple, efficient, easy to realize continuous production. It could be used to produce the graphite fibers for metal matrix composites or with special functions.
关键词(KeyWords)：
石墨纤维;镀银;热解;电阻率
graphite fiber;silver plating;pyrolysis;electrical resistivity
基金项目(Foundation): 中国科学院科技创新基金项目资助(CXJJ-16M252)
作者(Author):
刘大鹏,欧阳琴,陈友汜,马洪波,徐敏军
LIU Da-peng,OUYANG Qin,CHEN You-si,MA Hong-bo,XU Min-jun
DOI: 10.16090/j.cnki.hcxw.2018.08.006
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