High durability - Features of paints for electrodeposition coatings

Electrodeposition coating is excellent in that it can stably impart high durability that is difficult to achieve with other construction methods. Dense and homogeneous coatings formed using electric fields have few pinholes and voids, and are less susceptible to deterioration due to temperature changes and external forces.
The main feature of TOYOCHEM electrodeposition coatings is that they are resistant to cracking and peeling in cold and thermal shock environments where the temperature changes rapidly from high to low, and can maintain their performance over time.

• Durability test data
• FAQ
• Product Summary
• Supported materials
• Document DL / Inquiries

Test data on durability (comparison with other construction methods)

The figure below shows the results of a cold and thermal shock test at -40°C and 180°C repeatedly to evaluate the durability of electrodeposition paints applied to aluminum substrates. Crack formation and significant reduction in insulation properties were confirmed in white anodized aluminum, but there was no change in appearance for electrodeposition coatings (10 and 20 μm), and adhesion was maintained in Classification 0. In addition, the breakdown voltage does not change much before and after the test, showing excellent durability against sudden temperature changes in high and low temperatures.

Test conditions
Measurement sample: A1050 painted panel (flat plate), test temperature: -40°C on the low temperature side, 180°C on the high temperature side, exposure time: 15 minutes each on the high and low temperatures, number of cycles: 500 times, physical property evaluation items: coating appearance (visual), cross-cut adhesion (JIS K 5600-5-6), dielectric breakdown voltage (DC voltage), 25°C 50%RH under air

Why electrodeposition coating can ensure higher durability than other construction methods

The reason why electrodeposition coating can ensure more durability than other construction methods is that the coating film formed by the electric field is very dense and has few voids and pinholes. In addition, it is firmly bonded to the substrate through electrochemical reactions, making it less likely to delaminate due to temperature changes and impacts, and reducing the progression of subfilm corrosion.
In addition, the self-control ensures uniform film thickness even in complex geometries, preventing weak points and maintaining stable performance even in thermal shock and long-term use environments.

"Frequently Asked Questions" about the durability of electrodeposition paints

Product Summary

TOYOCHEM 's electrodeposition coatings are water-based coatings that use electric fields to deposit resins uniformly and densely, enabling stable deposition even in complex shapes.
It combines high insulation, heat resistance, corrosion resistance, and durability, and can be used in a wide range of applications such as electrical components, motor parts, and industrial equipment, where long-term reliability is required due to its strong adhesion to metal substrates.

Product features

This product deposits resin uniformly and densely by an electric field, forming a dense coating film with few pinholes and voids. It has a very high adhesion to the substrate and is less likely to peel off due to temperature changes or external forces.
In addition, since uniform film thickness can be secured even in complex shapes, it prevents durability loss due to uneven film thickness and provides stable performance over a long period of time even in harsh environments such as cold and thermal shock.

Differences from other products

Solvent coatings and powder coatings are prone to defects during thickening and tend to delaminate due to thermal shock and vibration. Anodized aluminum is hard but sensitive to temperature changes and can be prone to cracking.
In contrast, TOYOCHEM 's electrodeposition coatings have a high density coating and excellent adhesion, resulting in fewer defects even in thick films and no cracking or peeling even with cold and thermal shocks. The main difference is that durability is stable even in complex shapes.

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