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›› 2006, Vol. 6 ›› Issue (4): 651-655.

• 材料工程专栏 • 上一篇    下一篇

硫酸盐酸性镀液中碳纤维电镀铜

曹卓坤,刘宜汉,姚广春   

  1. 东北大学材料与冶金学院
  • 出版日期:2006-08-20 发布日期:2006-08-20

Electroplating of Carbon Fibers in Sulfate Acidic Solution

CAO Zhuo-kun,LIU Yi-han,YAO Guang-chun   

  1. School of Material and Metallurgy of Northeastern University
  • Online:2006-08-20 Published:2006-08-20

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摘要： 针对在硫酸铜酸性镀铜液中碳纤维电镀出现的镀层粗糙、"黑心"等问题，研究了纤维预处理、镀液成分和电解规范对镀层的影响，确定了合适的碳纤维电镀铜工艺. 预处理采用空气高温氧化和硝酸粗化氧化，SEM和XPS分析显示，预处理后碳纤维表面粗糙度增加，并且存在大量亲水性含氧官能团. 讨论了镀液中游离硫酸浓度、有机添加剂及Cl-等对镀铜层质量的影响，并采用SEM, XRD等方法考察了镀层质量. 结果表明，在CuSO4 60 g/L, H2SO4 180 g/L镀液中加入适量2-巯基苯并咪唑、乙撑硫脲和聚二硫二丙烷磺酸钠等添加剂，控制Cl-含量20~60 mg/L，以及选择合适的工艺参数，可以在碳纤维表面得到均匀、平整、与纤维结合紧密的镀铜层.

关键词: 碳纤维, 预处理, 润湿性, 电镀, 镀铜

Abstract: Carbon fibers coated with copper are widely utilized in many fields because of their special properties. In this study, carbon fibers were pretreated in both air at high temperature and HNO3 solution, and the surface change of the fibers was detected by X-ray photoelectron spectroscope (XPS). A simple electroplating technique in a sulfate bath was used. Through changing the concentrations of H2SO4 and CuSO4 and adding additive agents of 2-mecaptobenzimidazole, ethylene thiourea, 3,3-Dithiobis-1-propanesulfonic acid disodium salt, etc., uniform and smooth copper coating was obtained on carbon fibers. And the effects of H2SO4 and the additive agents on the copper coating features were examined. The copper coating was characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The results indicates that uniform and smooth copper coating could be obtained in the solution of CuSO4 60 g/L, H2SO4 180 g/L and addition of additive agents.

Key words: carbon fiber, pretreatment, wetting ability, electroplating, copper coating