When looking at different types of powder coating, you are often left to consider factors like durability, finish, and overall appearance. Powder coating is one of the most popular finishing options and makes up over 15% of the industrial finishing market. This means that there are many selections to choose from in terms of coatings. But even with all of these things being taken into consideration, it can still be difficult o determine the best powder coating. With that in mind, we’re looking into a couple of the most common types of powder coatings on the market, making a comparison, and determining what will best suit your needs
Polyester Powder Coating: Understanding Its Features
Out of all types of powder coating, polyester coating is one of the most commonly used. However, this doesn’t necessarily mean that it’s the best powder coating for you. Typically, polyester coatings are broken into TGIC and non-TGIC. In both cases, the resulting finish will be durable, flexible, and capable of a great degree of chemical resistance. At the same time, polyester coatings have low cure temperatures, which means that they are more capable of handling sensitive components. Less sensitive components, however, may not be good matches.
Typically, you will also notice that polyester coating is more resistant to yellowing. This means that it will often continue to look good for a longer period of time. Polyester coatings will maintain themselves for one to three years without needing to be retouched. Durable polyester could be the best powder coating if an item is meant to be permanently kept outside.
Epoxy Coating: The Alternative to Polyester Coating
If you find that polyester coating isn’t quite right for you, consider epoxy coating. The great thing about epoxy coatings is that they are quite hard and resistant to chemicals and corrosion. It also adheres to metal quite well and is remarkably easy to use.
However, epoxy coatings can be more prone to fading and becoming chalky under excessive sunlight. Often, they will degrade after a few months in the sun. However, epoxy coatings are perfect for indoor use. Additionally, the same epoxies used in epoxy coatings can often be used in primers.
Consider your powder coatings carefully; don’t make a decision all too quickly. Do your research, and if necessary, ask questions of the professionals.