High corrosion resistance - Introduction of coatings for electrodeposition coatings

Electrodeposition coating effectively suppresses the intrusion of corrosion factors because the electric field forms a dense and uniform coating film, and the anti-corrosion performance is not compromised even at the edges and complex shapes. Therefore, it can provide better corrosion resistance than other construction methods.
TOYOCHEM 's electrodeposition coatings reduce film deterioration and corrosion progression even in harsh environments such as salt spray, drying, and wetness, and maintain excellent anti-corrosion performance over a long period of time due to high adhesion and dense film structure. It is the perfect solution for applications where durability is required.

• Test data on corrosion resistance
• FAQ
• Product Summary
• Supported materials
• Document DL / Inquiries

Test data on corrosion resistance

The figure below shows the results of a combined cycle test evaluating the corrosion resistance of epoxy electrodeposition coatings on aluminum substrates. While significant corrosion occurred when unpainted, electrodeposition coating (10 and 20 μm) has high corrosion resistance even after 125 cycles. The electrodeposition coating film has a dense and high adhesion, so it can be confirmed that it has excellent corrosion resistance even in harsh saltwater, dry, and wet environments.

Test conditions
Coating substrate: A1050 pure aluminum material (0.3mm thick flat plate), measuring sample: cross-cut treatment on the painted panel, number of cycles: 125 times (about 1000 hours), reference standard: JASO M609 / M610
(1) Salt spray (35°C, 5% NaCl) ×2 hours→ (2) Drying (60°C, 30%RH) ×4 hours→ (3) Wet (50°C, 95%RH) ×2 hours

Why electrodeposition coating can ensure higher corrosion resistance than other construction methods

The reason why electrodeposition coating can ensure higher corrosion resistance than other construction methods is that the force of the electric field allows resin particles to precipitate on the surface of the substrate uniformly and densely, forming a dense coating film with few pinholes and voids. In addition, the coating film formation with chemical reactions has high adhesion to metals, making it difficult for corrosive factors to enter the interface.
In addition, the self-control that ensures uniform film thickness even in complex shapes ensures that sufficient anti-corrosion film is formed even at edges and recesses, which tend to be weak points. Together, these properties make electrocoating excellent corrosion resistance in harsh environments.

"Frequently Asked Questions" about the corrosion resistance of electrodeposition paints

Product Summary

TOYOCHEM 's Anion Electrodeposition Coatings are water-based epoxy-based electrodeposition coatings based on proprietary polymer design techniques.
It is characterized by its ability to impart high adhesion, excellent corrosion resistance, processing following, and insulation properties to various metals such as aluminum and steel, and can form uniform film thickness even for complex shapes and dissimilar metals.
It is a high-performance paint that can be applied to new fields such as mobility, electronics, and living spaces by applying conventional coating technology for food and industrial containers.

Product features

This product has a unique emulsion design made of high molecular weight resin to provide excellent corrosion resistance. The high molecular weight resin forms a dense and moisture-resistant coating film, which greatly inhibits the progression of corrosion. In addition, the functionalized resin acts as a corrosion-resistant barrier inside the coating film, making it less likely to cause microscopic defects such as pinholes.
In addition, the uniform film thickness unique to the electrodeposition method ensures stable performance even in complex geometries, and provides long-term rust prevention even in conditions with many corrosive factors, such as outdoors and humid environments.

Differences from other products

Compared to other companies' products, this product has the advantage of high adhesion due to its unique high molecular weight resin design, which reduces interface degradation, which is the starting point of corrosion. In addition, the anti-corrosion barrier made of functionalized resin suppresses micro-defects and prevents corrosion from progressing.
In addition, the uniform deposition properties of electrodeposition coating make it difficult for thin films to form even in complex shapes, making it less likely to produce uneven corrosion resistance compared to other companies' products. As a result, it provides stable and long-term corrosion resistance even in challenging environments.

Supported materials

TOYOCHEM 's electrodeposition coatings are compatible with various metal materials such as SUS, aluminum, and copper. Suitability and incompatibility vary depending on the type of metal and surface treatment, so please feel free to contact us if you have any concerns.
(* Electrodeposition coating is a technology that forms a coating film by applying electricity to the subject, so it cannot be painted on materials that do not conduct electricity)

For more information on painting aluminum materials, please refer to the following page.

Document DL / Inquiries