Application of Nickel Plating Solution and High Corrosion Resistant Double sided Thick Nickel Plated Rolled Copper Foil Process

Copper foil is one of the main materials used in the electronic field today, and the quality of copper foil directly affects the performance of products. According to the classification of production processes, there are mainly two types of copper foil: electrolytic copper foil and rolled copper foil. Rolled copper foil has better bending performance than electrolytic copper foil. Therefore,Rolled copper foilWidely used in the field of electronics.

Before use, copper foil usually needs to be pressed onto a resin substrate to form a copper-clad laminate, which can then be applied to circuit boards. To ensure sufficient bonding between copper foil and resin substrate, as well as certain heat resistance, corrosion resistance, oxidation resistance and other characteristics, and to ensure the performance of printed circuit boards, copper foil needs to undergo surface treatment before pressing.

2. Traditional domesticNickel plated copper foilAll are single slot single-sided nickel plating, and there are also a small amount of double-sided nickel plating.

On the one hand, due to equipment and process limitations, the thickness of its nickel plating layer is thin, only less than 0.1 μ m. At present, due to the special needs of high-end users at home and abroad, not only do they needCopper foil double-sided nickel platingMoreover, the nickel plating thickness on each side is required to reach 0.5-0.8 μ m, and the nickel plating thickness needs to be increased by at least 7-8 times.

On the other hand, traditional nickel plated copper foil has poor oxidation and corrosion resistance. Under conditions of 180 ℃, 1h, 85 ℃, 85% humidity, and 24h, it is prone to oxidation and discoloration. Especially under the testing conditions of 5% NaCl and 35 ℃, the copper foil surface is severely corroded and discolored within 10h, with extremely uneven color and even flower spots, making it unusable for users.

Furthermore, traditional nickel plated copper foil also has problems with insufficient smoothness and high porosity. After being made into circuit boards, high-frequency losses are large, which affects its use in high-frequency circuits.

Finally, traditional copper foils require a significant increase in current density in order to achieve the desired coating thickness in a very short period of time during nickel plating, resulting in severe stress deformation and high-temperature thermal deformation of the copper foil after nickel plating, and even severe discoloration, softening, folding, and burning, leading to the scrapping of the copper foil.

Currently, there is an urgent need for double-sided high corrosion resistant nickel plated rolled copper foil products in certain industries, but due to the high difficulty of developing such products, the technology is not yet mature.

Copper foil nickel plated metalIt has high stability in air and strong passivation ability. It can form an extremely thin passivation film in air and resist the corrosion of atmospheric alkali and certain acids. This makes the electroplated product chemically stable in both working and alkaline environments, and not easily discolored. It can only be oxidized at temperatures above 600 ℃; The nickel plating layer has strong adhesion and is not easy to peel off; After nickel plating, the surface hardness is high, which can improve the wear resistance and acid alkali corrosion resistance of the product. The product has excellent wear resistance, corrosion resistance, and rust prevention performance.
Due to the high surface hardness of nickel plated products and the extremely small crystal size of electroplated nickel, they have high polishing properties and can achieve a mirror like surface. They can maintain a smooth finish in the atmosphere for a long time, so they are also commonly used for decoration. The nickel plated copper foil produced by Advanced Institute Technology has excellent surface smoothness and flat plate shape. And after degreasing treatment, it is easy to laminate with other materials to form materials. At the same time, Advanced Institute Technology can also customize the annealing, slitting and other processing of nickel plated copper foil according to customer requirements.
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