Rain Shield Electrophoresis Coating Line
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Electrophoretic coating typically involves four processes that occur simultaneously:
1. Electrophoresis: Under the influence of a DC electric field, positively and negatively charged colloidal particles move toward the negative and positive electrodes, respectively—this phenomenon is also known as electrophoresis.
2. Electrolysis: Oxidation-reduction reactions occur simultaneously at the electrodes, paradoxically giving rise to both oxidation and reduction phenomena on the electrode surfaces.
3. Electrophoretic Deposition: Due to electrophoresis, the charged colloidal particles move toward the anode, releasing electrons onto the template surface and subsequently depositing as an insoluble film—this is how the paint coating forms.
4. Electroosmosis: The phenomenon where, under the influence of an electric field, the solid phase remains stationary while the liquid phase moves. Electrophoresis causes the moisture within the paint film to gradually migrate outward, eventually forming a dense paint film that is nearly impermeable to electricity, with very low moisture content and exceptionally high electrical resistance.
5. Take iron oxide epoxy electrophoretic paint as an example: This electrophoretic paint is composed of modified epoxy resin, butanol, ethanolamine, talc, and iron oxide. When the electrophoretic paint is mixed with distilled water and subjected to a direct current electric field, it separates into positively charged cations and negatively charged anions, initiating a series of complex physicochemical, colloid chemical, and electrochemical processes.
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Contact: Mr. Yi
Email:ydy@shengjichuan.cc
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