A microetching chemical treatment agent for recyclable copper and copper alloy surfaces
A chemical treatment and recycling technology, applied in the field of micro-etching chemical treatment agents, can solve problems such as loss, insoluble anode breakdown damage, copper nodule cathode and anode short circuit, etc., to reduce energy consumption and reduce the risk of anode breakdown damage , increase the effect of uniform roughness
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Embodiment 1
[0041] Pilot line test, the workpiece to be processed is placed in the micro-etching working tank, and then it can be recycled and treated with copper and copper alloy micro-etching chemicals, and multiple tests are carried out with different components and component weight percentages , the microetching chemicals used in each test are mixed from the components in Table 1.
[0042] Table 1. Test conditions, chemical composition and concentration of the pilot line test (the balance is deionized water):
[0043]
[0044]
[0045] *It is a domestic brand of butyl polyoxypropylene polyoxyethylene ether.
[0046] After the above-mentioned micro-etching treatment chemicals are sprayed from the pilot test line to treat the test copper plates, they are pumped to the electrolysis recovery equipment, and the regenerated chemicals after electrolytic treatment are pumped back to the pilot test line spray tank to continue to process the test copper plates. The entire test The temper...
Embodiment 2
[0053] In the dry film pretreatment process of a circuit board factory in South China, the microetching chemical treatment agent SkyEco190 in comparison 3 in Example 1 was used, and the electrolytic recovery equipment system was used.
[0054] Please refer to the specific method image 3 , the electrolytic recovery equipment is connected to the micro-etching working tank 10 of the circuit board production line through pipelines. After the micro-etching agent micro-etches copper in the micro-etching working tank 10, the temperature of the micro-etching treatment chemical agent is set to 38 degrees Celsius, and the spray pressure is 1.5 Kilograms per square centimeter, the processing time is 60 seconds, and the amount of microetching is 30 to 40 microinches. The basic reaction principle of the chemical reaction in the micro-etching tank is:
[0055] 2Fe 3+ +Cu→2Fe 2+ +Cu 2+
[0056] During the reaction process, the ferric iron in the agent is converted into ferrous iron, th...
Embodiment 3
[0062] For the vertical electroplating pilot line test, the improved recyclable copper and copper alloy surface micro-etching treatment chemical agent described in this application is used, wherein the chemical composition and concentration are respectively:
[0063] Sulfuric acid 120g / l
[0064] Iron sulfate 120g / l
[0065] The additive is SkyPlateCu657, an electroplating copper additive from Tiancheng Chemical Co., Ltd., which contains sodium polydithiodipropane sulfonate, sodium 3-mercaptopropane sulfonate, sodium N,N-dimethyldithiocarbonylpropane sulfonate, isosulfur Ureapropanesulfonic acid inner salt, 3-(benzothiazole-2-mercapto)-sodium propanesulfonate) or a mixture of more than two, the concentration range is 0.2-10ppm, the present embodiment is preferably 3ppm, and according to A mixture of polyoxypropylene polyoxyethylene ether and polyethylene glycol monomethyl ether formulated in a specific ratio, the concentration range is 0.01 to 0.3%, preferably 0.05% in this e...
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Abstract
Description
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Application Information
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