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Environment-friendly ashing process of rolled copper foil

A technology of ashing treatment and rolling copper foil, which is applied in the field of environmentally friendly ashing treatment process, which can solve the problems of poor peeling resistance, etching and corrosion resistance of copper foil, human, social and environmental hazards, and failure to meet FPC production requirements, etc. problems, to achieve the effect of good corrosion resistance, good performance indicators, high temperature and oxygen resistance

Active Publication Date: 2017-08-15
LINGBAO JINYUAN ZHAOHUI COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the surface treatment method of rolled copper foil adopts simple copper plating or galvanizing treatment, but the treated copper foil has poor peeling resistance, etching property and corrosion resistance, which cannot meet the production requirements of FPC
Moreover, the addition of As, Sb, Cd and other toxic metals in the traditional surface treatment process will cause harm to humans, society and the environment.

Method used

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  • Environment-friendly ashing process of rolled copper foil
  • Environment-friendly ashing process of rolled copper foil
  • Environment-friendly ashing process of rolled copper foil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An environment-friendly ashing treatment process for rolled copper foil, which comprises the following steps:

[0030] 1) Degreasing and cleaning: Add a sodium hydroxide aqueous solution with a temperature of 50°C and a concentration of 50g / L into the degreasing tank to degrease and clean the copper foil;

[0031] 2) Roughening electroplating twice: add the roughening solution into the roughening PVC tank, and perform roughening electroplating on the copper foil obtained in step 1); the composition of the roughening solution: Cu 2+ : 10g / L; H 2 SO 4 : 100g / L; Temperature: 25°C;

[0032] 3) Curing and electroplating twice: Add the curing solution into the curing PVC tank, and perform curing and electroplating on the copper foil obtained in step 2); the composition of the curing solution: Cu 2+ : 40g / L; H 2 SO 4 : 100g / L; Temperature: 40°C;

[0033] 4) Nickel alloy electroplating: Add the nickel alloy electroplating solution into the nickel alloy PVC tank, and perfo...

Embodiment 2

[0038] An environment-friendly ashing treatment process for rolled copper foil, which comprises the following steps:

[0039] 1) Degreasing and cleaning: Add a sodium hydroxide aqueous solution with a temperature of 60°C and a concentration of 60g / L into the degreasing tank to degrease and clean the copper foil;

[0040] 2) Roughening electroplating twice: add the roughening solution into the roughening PVC tank, and perform roughening electroplating on the copper foil obtained in step 1); the composition of the roughening solution: Cu 2+ : 20g / L; H 2 SO 4 : 150g / L; Temperature: 30°C;

[0041] 3) Curing and electroplating twice: Add the curing solution into the curing PVC tank, and perform curing and electroplating on the copper foil obtained in step 2); the composition of the curing solution: Cu 2+ : 60g / L; H 2 SO 4 : 150g / L; Temperature: 50°C;

[0042] 4) Nickel alloy electroplating: Add the nickel alloy electroplating solution into the nickel alloy PVC tank, and perfo...

Embodiment 3

[0047] An environment-friendly ashing treatment process for rolled copper foil, which comprises the following steps:

[0048] 1) Degreasing and cleaning: Add an aqueous sodium hydroxide solution with a temperature of 70°C and a concentration of 80g / L into the degreasing tank to degrease and clean the copper foil;

[0049] 2) Roughening electroplating twice: add the roughening solution into the roughening PVC tank, and perform roughening electroplating on the copper foil obtained in step 1); the composition of the roughening solution: Cu 2+ : 30g / L; H 2 SO 4 : 200g / L; Temperature: 45°C;

[0050] 3) Curing and electroplating twice: Add the curing solution into the curing PVC tank, and perform curing and electroplating on the copper foil obtained in step 2); the composition of the curing solution: Cu 2+ : 80g / L; H 2 SO 4 : 200g / L; Temperature: 55°C;

[0051] 4) Nickel alloy electroplating: Add the nickel alloy electroplating solution into the nickel alloy PVC tank, and perf...

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Abstract

The present invention discloses an environmental protection ashing treatment process of calendaring copper foil. The environmental protection ashing treatment process comprises degreasing washing, roughening electroplating, curing electroplating, nickel alloy electroplating, zinc electroplating, chromate passivation treatment, silane treatment and the like. According to the present invention, after electrochemical degreasing, roughening and curing treatment (roughening and curing can be selected more than two times according to the requirement) Cu grain electrodeposition are performed on the calendaring copper foil, the nano-scale nickel alloy is electrodeposited under the acidic condition, the thin metal zinc layer is electroplated, and finally the chromate passivation treatment is performed and the silane coupling agent is uniformly sprayed on the surface; As, Sb, Cd and other toxic and harmful metals are not added, and the alloy system electrodeposition and other relatively simple processes are used to treat the process; and under the optimization of the process parameters, the environmentally friendly surface treated copper foil with characteristics of good performance, meeting of FPC production requirements, gray appearance of gray, no toxicity and no harm can be obtained.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of rolled copper foil, and in particular relates to an environment-friendly ashing treatment process of rolled copper foil. Background technique [0002] Flexible printed circuit board (FPC) has been rapidly developed and used in electronic information due to its advantages of lightness, thinness and bendability, especially in electronic products such as digital cameras, notebook computers, smart watches and liquid crystal displays. be widely used. [0003] The production process and special flaky crystal structure of rolled copper foil endow it with superior ductility, folding resistance, low roughness and high density, etc. It has become the basic material of FPC. In the FPC manufacturing process, the rolled copper foil is first laminated with resin to form a flexible copper clad laminate (FCCL), and the flexible copper clad laminate is etched to form a printed circuit board. Therefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/12C25D5/48C25D7/06C25D3/22C25D3/38
Inventor 吴婷乔亚峰徐蛟龙马少锋
Owner LINGBAO JINYUAN ZHAOHUI COPPER