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压延铜箔的无氰电镀锌黑化处理工艺

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  • 上海理工大学材料与化学学院
刘新宽(1970-),副教授,从事于电功能材料研究,电话:13817529306,E - mail:xinkuanliu@usst.edu.cn

收稿日期: 2021-12-20

  修回日期: 2022-01-27

  录用日期: 2022-02-23

  网络出版日期: 2024-01-09

Cyanide - Free Electro - Galvanizing Blackening Process of Rolled Copper Foil

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  • College of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China

Received date: 2021-12-20

  Revised date: 2022-01-27

  Accepted date: 2022-02-23

  Online published: 2024-01-09

摘要

为了研究出无氰环保,且工艺成本低的压延铜箔黑化工艺,以45.4~79.5 g/L Zn2+,20.0~30.0 g/L柠檬酸钠,30.0~50.0 g/L硼酸和5.0~15.0 g/L硫酸铵为基础镀液成分,通过加入添加剂A(表面活性剂)和添加剂B(抑制剂),在压延铜箔表面形成陷光结构,从而实现了无氰电镀锌黑化。研究了镀液成分及工艺参数对镀层亮度(L*)的影响,并对黑化箔的电导率、粗糙度、高温抗氧化性等性能进行了测试。研究表明:镀锌黑化箔的电导率优于镀镍黑化箔,粗糙度(Rz)大于1.3 μm的锌镀层的亮度符合黑化要求且满足低轮廓铜箔的标准,镀锌黑化箔的高温抗氧化性也达到了要求。

本文引用格式

饶翔, 刘新宽 . 压延铜箔的无氰电镀锌黑化处理工艺[J]. 材料保护, 2022 , 55(5) : 123 -128 . DOI: 10.16577/j.issn.1001-1560.2022.0135

Abstract

For developing a cyanide - free, environmentally friendly and low - cost rolled copper foil blackening process, 45.4~79.5 g/L Zn2+, 20.0~30.0 g/L sodium citrate, 30.0~50.0 g/L boric acid and 5.0~15.0 g/L ammonium sulfate were used as the basic bath components to form a light trapping structure on the surface of the rolled copper foil by adding additive A (surfactant) and additive B (inhibitor), so as to realize the blackening of cyanide - free electro - galvanizing. Moreover, the influences of bath composition and process parameters on the brightness (L*) of the coating were studied, and the electrical conductivity, roughness, high - temperature oxidation resistance and other properties of the blackened foil were tested. Results showed that the electrical conductivity of galvanized blackened foil was better than that of the nickel - plated blackened foil, and the brightness of zinc coating with a roughness (Rz) greater than 1.3 μm could meet the blackening requirements and as well as standards regarding low - profile copper foil. Furthermore, the galvanized blackened foil also met the high temperature oxidation resistance requirements.
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