Several environmental factors make any applied chrome powder coat to start deteriorating. Below are 4 major determining factors in this process that cause it to happen:
POWDER COAT TYPE
It’s vital to be aware that in terms of exterior applications, not all powder coats are made equal. As a matter of fact, other powder coating types aren’t suited well to be used outdoors. Below are 4 types of coating types you should learn with a short description of their appropriateness for exterior application:
Fluoropolymers. This type of powder coating has great weathering properties and can retain color and gloss consistency for a long time. In other instances, they can even maintain their look for decades. While some powder coating types may be suitable for unique applications or less costly, fluoropolymers-based powder coats are best used for the exterior.
Urethanes. Urethane powder coats and polyester powder coats are pretty similar. However, urethane powder coats are less flexible compared to the latter. Regardless, it’s still more resistant to chemicals.
Polyester. Powder coats made out of polyester provide resistance to corrosion, chemicals, and UV radiation.
Epoxy. Powder coats that are epoxy-based have outstanding corrosion resistance properties. Although, some weather conditions and sunlight can immediately make their appearance deteriorate eventually maybe within a span of months.
QUALITY OF POWDER COAT
Powder coats come with various quality levels. The entry-level or industrial architectural grade indicates the most fundamental measure of the performance of a powder coat. This kind of powder coat would basically help keep up its color and gloss consistency for 12-18 mos. in hot weather conditions.
On the contrary, some powder coats take pride in their amazing exterior durability, such as exterior automotive grade coats and high-quality exterior durability grade coats. Even though it varies from one particular product to the other, such powder coats can endure 5-10 years of climate conditions similar to South Florida without showing particular signs of degradation.
High levels of humidity can also affect the appearance and durability of the powder coating adversely. Before the curing process has been finished, the powder coats in humid and wet places tend to trap and pull in moisture from the surrounding air. In the end, this will result in a stained and discolored finish on the product’s appearance.
When it comes to stored parts that have been powder coated, the best humidity range would be between 47-55 percent.
When it comes to the storage for powder coat, the perfect temperature should be between 68-80°F. Although, only a few areas on earth have a climate that’s sufficiently consistent to cater to this range of temperature all throughout the year. Meaning, your coated parts’ indoor storage may be needed for the best conditions. Moreover, high UV radiation levels can eventually make both a color washout of more or less 50 percent and a massive reduction in gloss. Because of this, the standard durability of outdoor powder coat usually utilizes climate conditions found in central Arizona, Okinawa, or South Florida as procedures of product performance.