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A degreasing method in the surface treatment process of rolled copper foil

A technology for rolling copper foil and surface treatment, which is applied in the field of degreasing in the surface treatment process of rolled copper foil, which can solve problems such as hydrogen embrittlement of rolled copper foil, achieve the effects of improving the degree of removal, reducing the amount of residual oil, and improving surface quality

Active Publication Date: 2017-07-07
中色正锐(山东)铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the electrolytic degreasing process is usually used in the prior art to degrease the rolled copper foil. However, after the electrolytic degreasing treatment, the residual oil on the surface of the rolled copper foil is 5mg / m 2 ~10mg / m 2 , the amount of residual oil is still high, and it will still have a significant negative impact on the normal progress of the electroplating process such as subsequent roughening treatment; and in the current electrolytic degreasing method, the rolled copper foil is directly electrically connected to the negative pole of the DC power supply, as The reduction reaction at the cathode produces hydrogen gas, which enters the rolled copper foil by infiltration, etc., which can easily cause "hydrogen embrittlement" of the rolled copper foil

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  • A degreasing method in the surface treatment process of rolled copper foil

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Embodiment Construction

[0026] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only to further illustrate the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0027] Such as figure 1 as shown, figure 1 It is a schematic diagram of the working principle of the degreasing method in the surface treatment process of the rolled copper foil provided by the embodiment of the present invention.

[0028] The invention provides a degreasing method in the surface treatment process of rolled copper foil, comprising the following steps:

[0029] 1) Chemical degreasing: The rolled copper foil 8 is immersed in a chemical degreasing agent in a chemical degreasing tank for chemical degreasing treatment. The chemical degreasing agent contains the following components: 20g / L-30g / L NaOH, 30g / L ~40g...

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Abstract

The invention discloses a degreasing method adopted in the rolled copper foil surface treatment process. Rolled copper foil is subjected to cathode electrolytic degreasing and anode electrolytic degreasing in sequence, and anode electrolytic degreasing is added compared with the prior art, so that the rolled copper foil is subjected to degreasing treatment performed through hydrogen and oxygen in sequence. Obviously, both the total molar weight and the total kinetic energy of hydrogen and oxygen are larger than the molar weight and the kinetic energy of single hydrogen, the removing degree of remaining grease is remarkably increased, the grease remaining amount of the degreased surfaces of the rolled copper foil is reduced, the single-face grease remaining amount of the rolled copper foil can be reduced by 3 mg / m<2>, normal operation of the following electroplating process such as roughing treatment is facilitated, and the surface quality, the inner quality, the mechanical performance, the electrochemical performance and the like of the rolled copper foil produced after the following electroplating process such as roughing treatment are further guaranteed or improved.

Description

technical field [0001] The invention relates to the technical field of rolled copper foil processing, in particular to a degreasing method in the surface treatment process of rolled copper foil. Background technique [0002] Rolled copper foil is made by smelting and processing copper into ingots, then hot-rolling, rough rolling and finishing rolling to make 0.1mm ~ 0.15mm copper foil base material, and finally rolled repeatedly by copper foil rolling mill. Formed, its thickness is usually 6 μ m ~ 70 μ m. Therefore, the crystalline structure of rolled copper foil is a sheet structure, which is superior to electrolytic copper foil in terms of strength and toughness. In addition, the calendered copper foil has a higher density and a smoother surface, which is more conducive to the rapid transmission of signals behind the circuit board. It is widely used in printed circuit boards with high-frequency high-speed transmission and fine lines. [0003] Rolled copper foil is made b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F1/00C23G1/20C25F7/02
CPCC23G1/20C25F1/00C25F7/02
Inventor 冯连朋陈宾王海军张玉翠张西良王亚超张春阳张禹
Owner 中色正锐(山东)铜业有限公司
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