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1. Basic Overview of the Product
Epoxy/polyester powder coatings (hybrid type) are gaining attention as functional coatings optimized for indoor product applications due to their unique composition. These coatings form films through the reaction of bisphenol A glycidyl ether type epoxy resin with carboxyl group-containing polyester resins, offering quality and paintwork performance similar to that of epoxy powder coatings.
2. Technical Details
Epoxy/polyester powder coatings are hybrid paints that combine the excellent adhesion and mechanical properties of epoxy resin with the beautiful appearance and weatherability of polyester resin. These coatings are notable for their wide curing temperature range and excellent recoatability (repair paintability), making them suitable for indoor products requiring precise finishes. The primary application method is electrostatic powder coating, allowing for thin-film finishes.
3. Advantages
The advantages of these coatings include improved appearance, thin-coating performance, enhanced primary physical properties, and a wide baking temperature range compared to epoxy powder coatings. This enables them to provide beautiful, durable finishes for a wide range of indoor products, such as household appliances, office equipment, automotive parts, electrical components, and various hardware. Furthermore, the improved recoatability makes repairs and repainting easier, which is another benefit.
4. Disadvantages
However, these coatings have lower film hardness and chemical resistance than epoxy powder coatings, making them less suitable for applications where durability is a priority. While their corrosion resistance and weatherability are comparable to epoxy powder coatings, there are limitations for outdoor applications or situations where high durability is required.