Metal-based copper surface anti-oxidizing enhancer used for pretreatment of PCB/FPC dry film and treatment method thereof
An anti-oxidation, metal-based technology, applied in the direction of jewelry, etc., can solve the problems of anti-oxidation and bonding force, and achieve the effects of saving labor and time, improving bonding force, and strong temperature tolerance
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[0023] Example 1
[0024] 1) Copper surface anti-oxidation enhancer composition for PCB / FPC dry film pretreatment, the composition is as follows:
[0025] Zinc sulfate: 42g / L
[0026] Nickel sulfate: 40g / L
[0027] Disodium ethylenediaminetetraacetic acid: 30g / L
[0028] Citric acid: 50g / L
[0029] Hydrazine hydrate: 40g / L
[0030] Methionine: 0.005g / L
[0031] PH of the adjusted solution: 2-3;
[0032] Taking 1L solution as an example, the configuration steps are as follows:
[0033] First, weigh the substances in each part by weight: 42g zinc sulfate, 40g nickel sulfate, 30g disodium edetate, 50g citric acid, 40g hydrazine hydrate, 0.005g methylthiobutanine;
[0034] At room temperature, prepare deionized water, an appropriate amount (less than 1L), add zinc sulfate and nickel sulfate, and stir. The solution is evenly mixed and the solution is clear to obtain solution A;
[0035] Add disodium edetate to the prepared solution A, stir, the solution is evenly mixed, and the solution is a stable...
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[0063] Example 3
[0064] 1) Composition of copper surface anti-oxidation enhancer composition for PCB / FPC dry film pretreatment:
[0065] Nickel sulfate: 28g / L
[0066] Sodium citrate: 10g / L
[0067] Ammonium chloride: 30g / L
[0068] Sodium hypophosphite: 30g / L
[0069] Ammonia: 30g / L
[0070] Ethylthiobutanine 0.05g / L
[0071] PH: 9-10
[0072] Taking 1L solution as an example, the configuration steps are as follows:
[0073] Prepare the following parts by weight: 28 g of nickel sulfate, 10 g of sodium citrate, 30 g of ammonium chloride, 30 g of sodium hypophosphite, and 30 g of ammonia;
[0074] At room temperature, add nickel sulfate to deionized water, stir, the solution is evenly mixed and the solution is clear, and solution A is obtained;
[0075] Add sodium citrate and ammonium chloride to the prepared solution A, stir, the solution is evenly mixed, and the solution is a stable and slightly turbid uniform liquid B;
[0076] Continue to add ammonia water to the configured solution B, sti...
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