Electrophoretic Coating Process
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86-13973350851Xiao Yuansheng / 86-18673399571Xiao Sheng / 86-13873348209Tang Qianyun
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- Commodity name: Electrophoretic Coating Process
- Commodity ID: 1430484946807050240
Overview of Electrophoretic Coating Electrophoretic coating is a painting method that uses an applied electric field to direct the movement and deposition of fine particles—such as pigments and resins—suspended in an electrophoretic liquid onto the surface of one of the electrodes. Although the principle behind electrophoretic coating was first conceived in the late 1930s, it wasn’t until after 1963 that this technology was developed and successfully implemented in industrial applications. Over the past three decades, electrophoretic coating has emerged as a unique film-forming technique, representing the most practical and effective application process for water-based coatings. Characterized by water solubility, non-toxicity, and ease of automation, it has rapidly gained widespread adoption across industries such as automotive, construction materials, hardware, and home appliances. Electrophoretic Coating Production Process
Overview of Electrophoretic Coating Electrophoretic coating is a painting method that uses an applied electric field to direct the movement and deposition of fine particles—such as pigments and resins—suspended in an electrophoretic liquid onto the surface of a substrate connected to one of the electrodes. Although the principle behind electrophoretic coating was first conceived in the late 1930s, it wasn’t until after 1963 that this technology was developed and successfully implemented in industrial applications. Over the past three decades, electrophoretic coating has emerged as a unique film-forming technique, representing the most practical and effective construction process for water-based coatings. Characterized by its water solubility, non-toxicity, and ease of automation, it has rapidly gained widespread adoption across industries such as automotive, building materials, hardware, and home appliances. Electrophoretic Coating Production Process 
Electrophoresis Gel Loading Area Degreasing and Phosphating Area Phosphating tank 
Spray Booth Table Adjustment Slot Next-item packaging line Basic Principles of Electrophoretic Coating Cathodic electrophoretic coatings contain resins with alkaline groups, which become salt-form after acid neutralization, allowing them to dissolve in water. When direct current is applied, the acidic anion ions migrate toward the anode, while the resin ions—and the pigment particles they encapsulate—carry a positive charge and move toward the cathode, eventually depositing onto its surface. This is the fundamental principle behind electrophoretic coating, commonly known as "electroplating." Electrophoretic coating involves a highly complex electrochemical process, typically involving at least four simultaneous phenomena: electrolysis, electrophoresis, electrodeposition, and electroosmosis.
1. Electrolysis
Any conductive liquid exhibits the phenomenon of decomposition when an electric current is passed through it—such as the electrolysis of water, which can be broken down into H₂ and O₂.
2. Electrophoresis
In a conductive medium, charged colloidal particles move toward the opposite electrode under the influence of an electric field. For example, in cathodic electrophoresis, positively charged colloidal particles (R3N H) entrain and adsorb pigment particles, causing them to migrate toward the cathode during the electrophoretic process.
3. Electrodeposition
The phenomenon of漆 particles depositing onto the electrode. The first step in electrophoretic deposition is the electrochemical decomposition of H₂O, a reaction that creates a highly alkaline (OH⁻) interfacial layer near the cathode surface. As cations (such as resins and pigments) react with OH⁻ and become insoluble, the coating film begins to deposit.
4. Electroosmosis
The coating film initially deposited onto the surface of the object being coated is a semi-permeable membrane. Under the continuous influence of the electric field, the moisture contained within the film gradually seeps out and migrates toward the bath liquid, causing the film to dehydrate. This phenomenon is known as electroosmosis. Electroosmosis transforms the hydrophilic coating film into a more compact, water-repellent structure by driving out excess moisture, thereby enhancing the film's density and durability.Electrophoresis Finished Product Image 
Electrocoating Product – Yanmar Rice Transplanter Electrophoretic Coating Products Electrophoretic Coating Products 
Electrophoretic Coating Products Electrophoretic Coating Products Electrophoretic Coating Products
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