长碳纤维表面连续镀铜工艺的优化
Process Optimization for Continuous Copper Electroplating on Long Carbon Fiber Surface
摘 要
采用焦磷酸盐镀铜工艺，利用自制的电镀装置对聚丙烯腈基长碳纤维进行连续镀铜改性，研究了镀液成分、电流密度、镀液温度与镀液pH等对镀层质量的影响规律，在此基础上对连续镀铜工艺进行了优化，并制得了性能较好的长碳纤维镀铜复合丝。结果表明：选择P2O74-与Cu2+物质的量分数之比为7.0的镀液作为基础镀液，添加剂选择质量浓度为25 g·L-1的柠檬酸铵，在电流密度为2.0~2.5 A·dm-2、镀液温度约为40℃、镀液pH为8.2~8.8的电镀工艺条件下，制得的镀层完整，均匀致密，结合强度高，且长碳纤维镀铜复合丝的导电性能显著提高，解决了束状长碳纤维在连续镀铜工艺中易出现的"黑心"和"结块"问题。
连续镀铜
工艺优化
longcarbon fiber
continuous plating copper
process optimization
Abstract
Long PAN-based carbon fiber was surface-modified by pyrophosphate copper plating with self-made equipment. The influences of bath composition, current density, plating temperature and pH value of bath on quality of coating were systematically analyzed to optimize the continuous copper electroplating process parameters, and C/Cu composite fiber with better properties was prepared. The results indicate that the problem of black core and agglomeration were well solved by electroplating in a bath with content (mole fraction) ratio 7.0 of P2O74- to Cu2+ and 25 g·L-1 ammonium citrate as the additive under the conditions of current density of 2.0-2.5 A·dm-2, bath temperature of 40℃, and bath's pH of 8.2-8.8. The obtained coating is complete, uniform and compact, it also owns high bonding strength, and the C/Cu composite fiber obtains significantly enhanced conductivity.
中图分类号 TQ153.14 DOI 10.11973/jxgccl201703007
所属栏目 试验研究
基金项目
收稿日期 2015/12/22
修改稿日期 2017/1/16
网络出版日期
作者单位点击查看
备注陶大伟(1992-),男,安徽合肥人,硕士研究生。
引用该论文: TAO Da-wei,DAI Meng-jia,CAO Yu-jie,WANG Wen-fang,LIU Jia-qin. Process Optimization for Continuous Copper Electroplating on Long Carbon Fiber Surface[J]. Materials for mechancial engineering, 2017, 41(3): 33～38
陶大伟,戴梦嘉,曹玉杰,王文芳,刘家琴. 长碳纤维表面连续镀铜工艺的优化[J]. 机械工程材料, 2017, 41(3): 33～38
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参考文献
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【4】CHAND S. Carbon fibers for composites[J]. Journal of Materials Science, 2000, 35(6):1303-1313.
【5】XIA L, JIA B B, ZENG J C, et al. Wear and mechanical properties of carbon fiber reinforced copper alloy composites[J]. Materials Characterization, 2009, 60(5):363-369.
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【11】HUA Z S, LIU Y H, YAO G C, et al. Preparation and characterization of nickel-coated carbon fibers by electroplating[J]. Journal of Materials Engineering & Performance, 2012, 21(3):324-330.
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【13】RAMS J, URENA A, ESCALERA M D, et al. Electroless nickel coated short carbon fibres in aluminium matrix composites[J]. Composites Part A:Applied Science and Manufacturing, 2007, 38(2):566-575.
【14】CHE D H, YAO G C, CAO Z K. A precious metal-free electroless technique for the deposition of copper on carbon fibers[J]. Metallurgical & Materials Transactions A, 2012, 43(11):4194-4199.
【15】LIN Y C, CHANG C L, LIN T S, et al. Application of physical vapor deposition process to modify activated carbon fibers for ozone reduction[J]. Korean Journal of Chemical Engineering, 2008, 25(3):446-450.
【16】XIE J, ZHENG Y S, LIU S Y,et al. One-pot in-situ synthesis of Sn/carbon-fibers nanocomposite by chemical vapor deposition and its Li-storage properties[J].Journal of Materials Science & Technology, 2012, 28(3):275-279.
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【19】CAO Z K, LIU Y H, YAO G C. Electroplating of carbon fibers in sulfate acidic solution[J]. Chinese Journal of Process Engineering, 2006, 6(4):651-655.
【20】顾斌, 许少凡, 徐继辉. 短碳纤维表面化学镀铜工艺研究[J]. 热加工工艺, 2006(12):44-45.
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