High-ductility electrolytic copper foil surface reddening method
A technology of electrolytic copper foil and treatment method, applied in the field of electrolysis, can solve the problems of poor adhesion and insufficient oxidation resistance of copper foil, and achieve the effects of improving peel strength, increasing chemical affinity, and blocking attacks
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Embodiment 1
[0018] Take a piece of copper foil, first the copper foil is cleaned by a surface treatment machine at a speed of 15m / min, the oxide on the surface of the copper foil is removed, and the surface is etched, and then the treated copper foil is placed in a copper content of 10 / L, Acid content of 100g / L, hydroxyethyl cellulose 0.5 / kWh roughened electrolyte, 7500A current was passed through at 40°C for electroplating; then the roughened copper foil was placed in copper content of 40g / L, acid In the solidified electrolyte with a content of 100g / L, a current of 6000A is applied at 40°C for electroplating, so that the roughened tumor is surrounded and reinforced by the normal copper plating layer, and the roughened layer is firmly combined with the copper foil substrate to form the final roughened layer Then, in the ashing electrolyte with a chromium content of 1.0 g / L, add sodium hydroxide to adjust the pH of the ashing electrolyte to 11.50, and feed 40A at 30°C for electroplating; th...
Embodiment 2
[0019] Example 2 Take a piece of copper foil. First, the copper foil is cleaned by a surface treatment machine at a speed of 15m / min to remove oxides on the surface of the copper foil, and the surface is etched, and then the treated copper foil is put into / L, acid content 120g / L, hydroxyethyl cellulose 0.6 / kWh roughening electrolyte, 7500A electric current is passed through at 30°C for electroplating; then roughened copper foil is put into copper content 60g / L. In the solidified electrolyte with an acid content of 120g / L, a current of 5600A is applied at 45°C for electroplating, so that the roughened tumor is surrounded and reinforced by the normal copper plating layer, and the roughened layer is firmly combined with the copper foil substrate to form the final Coarse layer; then put the copper foil in the ashing electrolyte with a chromium content of 4.0 g / L, add sodium hydroxide to adjust the pH of the ashing electrolyte to 13.50, and pour 30A at 40°C for electroplating; the...
Embodiment 3
[0021] Take a piece of copper foil. First, the copper foil is cleaned by a surface treatment machine at a speed of 15m / min to remove oxides on the surface of the copper foil and etch the surface. Then put the treated copper foil into a Acid content of 140g / L, hydroxyethyl cellulose 0.8 / kWh roughened electrolyte, 11000A electric current was passed through at 50°C for electroplating; then roughened copper foil was placed in copper content 70g / L, acid In the solidified electrolyte with a content of 150g / L, a current of 9000A is applied at 50°C for electroplating, so that the roughened tumor is surrounded and reinforced by the normal copper plating layer, and the roughened layer is firmly combined with the copper foil substrate to form the final roughened layer Then, add sodium hydroxide to the ashing electrolyte with a chromium content of 8 g / L to adjust the pH of the ashing electrolyte to 15.00, and feed 45A at 40°C for electroplating; then the copper foil with a zinc content of ...
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