Electrophoretic rustproof iron plate and preparation method thereof

Abstract

The invention relates to the technical field of electrophoresis and discloses an electrophoretic rustproof iron plate and a preparation method thereof. The rustproof iron plate comprises an iron plate and an electrophoretic resin layer which is arranged on the surface of the iron plate. The preparation method of the rustproof iron plate comprises the following steps: step (a), adding water into polymer ammonium salt to prepare electrophoresis tank liquid and ageing; step (b), putting the iron plate into an electrophoresis tank, performing electrophoresis under a voltage of 20V to 30V for 20s to 30s, and then taking out the iron plate to form a wet paint film on the surface of the iron plate; step (c), dipping the iron plate which is treated in the step (b) in an acid solution, taking out the iron plate 5s to 10s later, drying at the temperature of 100 to 110 DEG C for 25-35min, and cooling the iron plate to room temperature to obtain the electrophoretic rustproof iron plate. According to the electrophoretic rustproof iron plate disclosed by the invention, an electrophoretic resin layer is arranged on the surface of the rustproof iron plate; the electrophoretic resin layer plays a rustproof effect, is also capable of realizing electrophoresis again and can be used for replacing a current zinc layer or a coating containing metal powder; the preparation method is simple, low in cost, free of pollution of heavy metals, green and environment-friendly.

Description

Technical field [0001] The invention relates to the field of electrophoresis technology, in particular to an anti-rust iron plate capable of electrophoresis and a preparation method thereof. Background technique [0002] As we all know, untreated iron plates are prone to rust in natural environments. At present, the iron plates used for electrophoresis are generally galvanized on the surface to achieve both rust prevention and electrical conductivity. However, the electroplating process is easy to cause heavy metal pollution to the environment, and the electroplating cost is high; the cathodic electrophoretic coating developed subsequently can be used to cover the surface of the iron plate with a coating containing metal powder as an anti-rust layer to obtain electrophoretic anti-rust iron However, the disadvantage is that the metal powder in the anti-rust coating is generally silver or copper, which leads to high cost of preparing anti-rust iron plates. [0003] For example, the...

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Problems solved by technology

However, the electroplating process is easy to cause heavy metal pollution to the environment, and the cost of electroplating is high; the cathodic electrophoretic coating developed subsequently can cover a layer of metal powder coating on the surface of the iron plate by electrophoresis as an anti-rust layer, and obtain electrophoretic anti-rust iron plate, but the disadvantage is that the metal powder in the anti-rust coating is generally silver or copper, resulting in high cost of making anti-rust iron plate

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