Acid Potassium Chloride Zinc Electroplating Brightener

Brightener The main brightener can produce remarkable brightening and leveling effect. If the content is too high, the coating in the low current density area will become thinner, and the bottom will be exposed after passivation, which will easily lead to increased brittleness of the coating and affect the passivation quality. The content is too low, the coating bright leveling effect is not good. The content in the bath is maintained at 0.8-2ml/L. B.Softener Solubilizing main brightener, auxiliary brightening effect, increase the coating thickness in low area, improve the depth capacity of the bath, reduce the surface tension of the bath, on the cathode surface wetting effect. The content in the bath is 25ml/L - 30ml/L The coating brittleness increases and passivation quality is affected by high content. The content is too low, the bright effect is not good, the coating is easy to flower, stay in the air and change color quickly.

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Description

Coating performance evaluation index

Coverage capacity: refers to the full coverage capacity of the coating, also refers to the depth capacity

Uniform plating capacity: high, medium and low area coating thickness uniform ability.

Leveling ability: The better the leveling, the better the brightness

Corrosion resistance: refers to the corrosion resistance of the coating, coating rust resistance is mainly related to the thickness of the coating and the sealing film. Potassium chloride galvanized layer rust prevention ability is very poor, galvanized layer of closed passivation can prevent oxygen and moisture in the air from penetrating into the coating, prevent rust.

Additive performance evaluation index

High turbidity point: additives with high temperature resistance and low turbidity point are easy to precipitate at high temperature at a certain temperature, resulting in large consumption and poor performance.

High salt resistance: the process range can be expanded, which is conducive to the improvement of electroplating performance. Additives with low salinity tolerance are easy to salt-out, poor performance and large consumption.

High brightness: good performance additive leveling good, current distribution uniform ability, plating ability, high brightness, uniform thickness, good depth ability, light speed.

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