Treatment copper foil, copper-clad laminate using the treatment copper foil, and print circuit board
A technology of copper clad layer and treatment layer, which is applied in the field of copper foil treatment, can solve the problems of increased transmission loss, longer current propagation distance, etc., and achieves the effect of high peel strength
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[0122]
[0123] As the electrolytic solution, aqueous solutions prepared to the concentrations, pH values, and liquid temperatures of copper sulfate pentahydrate and pentasodium diethylenetriaminepentaacetate shown in Table 1, respectively, were used. In addition, the pH was adjusted using sulfuric acid.
[0124] In the electrolyte, the titanium coated with the platinum group metal oxide is used as the anode, and the untreated copper foil is used as the cathode for immersion, and the two electrodes are electrolyzed under the electrolysis conditions shown in Table 1. A resin-induced permeation layer is formed on one side of the copper foil.
[0125]
[0126] It is used as an anode in an aqueous solution containing 38g / L of cobalt sulfate heptahydrate, 23g / L of sodium molybdate dihydrate, 45g / L of trisodium citrate dihydrate, and 80g / L of sodium sulfate at pH 5.6 and liquid temperature of 30°C. The surface of titanium is coated with platinum group metal oxide, and the catho...
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peel strength | aaaaa | aaaaa |
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