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Recyclable environment friendly electrolytic stripping solution, preparation method and usage method

A deplating solution and an environment-friendly technology, which is applied in the field of preparation of electrolytic deplating solution, can solve the problems of uncontrollable deplating speed, safety hazards for operators, and high cost of waste liquid treatment, and achieves controllable deplating speed and convenient use , the effect of product stability

Active Publication Date: 2012-12-19
JIANGSU AISEN SEMICON MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method generally uses nitric acid, fluoboric acid, hydrochloric acid and other high-corrosion and high-risk acids to add oxidant chemical soaking. The main problem is that the deplating speed is difficult to control, which is easy to cause damage to the substrate. A large number of toxic and harmful gases, such as nitrogen dioxide, etc., permeate the operation site, causing potential danger to the safety of operators
In addition, a large amount of salt generated after deplating cannot be treated, and the cost of waste liquid treatment is high
In addition, there are also electrolytic deplating methods used in some processes, which are also based on the above systems, using sulfuric acid, nitric acid, hydrochloric acid, etc. The danger of acid is still relatively high, and there is also a large amount of waste liquid that needs to be treated.

Method used

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  • Recyclable environment friendly electrolytic stripping solution, preparation method and usage method

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Embodiment 1: Preparation of recyclable environment-friendly electrolytic deplating solution

[0015] The weight percentage ratio of each component is carried out according to the following ratio: 30% of methanesulfonic acid, 10% of tin methanesulfonate, 1% of polyoxyethylene polyoxypropylene ether, 5% of phytic acid, and the balance is water.

[0016] The preparation process of this example is as follows: according to the above-mentioned component content, add 2 / 3 of the water in the container; in the case of stirring, add methanesulfonic acid; in the case of stirring, add tin methanesulfonate at a uniform speed, and continue stirring 5-10 minutes; when stirring, add polyoxyethylene polyoxypropylene ether at a uniform speed, and continue stirring for 5-10 minutes; while stirring, add phytic acid, continue stirring, add water to the required amount, and stir for 1 hour, plastic Packed in buckets.

[0017] The method of use of this embodiment is: first add the recyclabl...

Embodiment 2-5

[0019] Repeat the method of Experimental Example 1 according to the content of each component specified in Table 1 below to obtain recyclable and environmentally friendly electrolytic stripping solutions with different components. The experimental results are shown in Table 1.

[0020] Table 1 embodiment experiment concrete parameter

[0021]

[0022] As can be seen from the test results shown in Table 1, the recyclable environment-friendly electrolytic deplating solution provided by the present invention can remove strips, hangers and steel strip surfaces at 20-35° C. for 20-70 seconds. , has an excellent deplating effect, and effectively prevents the corrosion of strips, hangers and steel strips.

[0023] When using this product, avoid bringing in acidic or alkaline solutions, wash your hands after operation, ventilate the workplace and storage warehouse, and avoid contact with the skin or splashing into the eyes. During use, add the stock solution or dilute according to...

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Abstract

The invention discloses a recyclable environment friendly electrolytic stripping solution, a preparation method and a usage method, the recyclable environment friendly electrolytic stripping solution comprises the following components by weight: 10-30% of methanesulfonic acid, 3-10% of tin methane-sulfonate, 1-5% of polyoxytrimethylene polyethenoxy ether, 1-5% of phytic acid and the balance of water. The recyclable environment friendly electrolytic stripping solution has the characteristics of stripping effect, no generation of toxic and harmful gas, recyclable stripping solution, safety, environmental protection, complete satisfaction of environmental requirements of the formula material and stable products, the waste liquid generated during the usage process can be directly and continuously used through electrolysis; the process has the advantages of simplicity, energy efficiency, and convenient usage.

Description

technical field [0001] The invention relates to a deplating solution for a material strip, a hanger or a steel strip, in particular to a preparation method of a recyclable and environment-friendly electrolytic deplating solution for a material strip, a hanger or a steel strip and a method for using the same. Background technique [0002] When electronic components such as semiconductor packaging, PCB board printing, and passive components are tinned, one is due to the failure of the front deburring, degreasing, deoxidizing and other processes, resulting in copper leakage from the strip and low solderability. And other problems, so it is necessary to strip the strip with poor coating; in addition, during electroplating, the part immersed in the solution on the cathode hanger or steel strip will also be plated unnecessarily. If it is not treated, the plating layer on the hanger will become thicker and thicker, which will lead to problems such as the failure of the device to be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F5/00
Inventor 庄建华张兵赵建龙
Owner JIANGSU AISEN SEMICON MATERIAL CO LTD
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