Two easy methods to distinguish the advantages and disadvantages of powder coatings

Before the news, the editor would like to ask how you usually identify product quality when purchasing products. The most important way is through visual inspection, which is the physical method. This method is the most intuitive but not very accurate and often leads to misleading information. In addition, if conditions permit, we will conduct certain chemical tests, which are accurate and error free, but more complicated. People who see the article title may wonder, is it so easy to distinguish the quality of powder coatings? In fact, the way we distinguish the quality of powder coatings today is through two methods: physical and chemical.

1、 Appearance recognition method:

[2] 1. The hand feel is silky smooth, fluffy, and floating Rough to the touch, heavy to the touch, and heavy to the touch Grasp a handful of powder in your hand, the smoother and looser the powder, the better the quality. Conversely, if the powder is rough and feels heavy, the quality is poor Not easy to spray, with a lot of secondary powder falling, resulting in significant waste

2. The larger the volume, the less filling material in the powder coating, and the higher the cost. The better the powder quality The smaller the volume, the higher the filling material in the powder coating, and the lower the cost. The worse the powder quality The same cardboard box, depending on which one has a larger volume of powder, is considered good powder, while that one has a smaller volume, is considered poor powder Not easy to spray, with a lot of secondary powder falling, high waste, small spraying area, and high usage cost

3. Powder with good storage time can be stored for a long time without changing the leveling and other effects of the powder Poor powder cannot be stored for a long time. Poor powder will experience a decrease in leveling and other effects after 3 months Normal powder has a shelf life of 12 months at room temperature, but using low-end raw materials can lead to unstable product quality and easy deterioration Using poor raw materials to produce powders, the sprayed surface will accelerate powdering and aging after six months, affecting customer reputation. In addition, powders are not easy to store, causing significant powder waste and high fees for customers

2、 Baking identification method:

Is there a good powder that does not produce a large amount of smoke during the baking process Poor powder produces a large amount of smoke during the baking process Good powder raw materials do not produce a large amount of smoke, and some manufacturers use inferior raw materials to fill the materials The amount of powder used will increase, and the square number cannot be sprayed out, increasing the cost of use. The same amount of powder will produce fewer products

3： High temperature identification method:

High temperature, adjust the temperature to between 220-230 degrees and keep it warm for 10-15 minutes. The powder has good temperature resistance and weather resistance. After high-temperature baking, the color change is small and the gloss change is not significant Poor powder, poor temperature and weather resistance, severe discoloration and dull luster after high-temperature baking This method is particularly effective for detecting outdoor light colored powders Poor powder, using poor resin, titanium dioxide, poor pigment and filler, poor temperature and weather resistance. Low cost, inferior as good

You can choose the appropriate identification method according to your own situation.

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