Powder coatings are a new type of solvent-free 100% solid powder coating. It has the characteristics of solvent-free, pollution-free, recyclable, environmentally friendly, energy and resource-saving, labor-reducing and high mechanical strength of coating film. However, there are many inferior powder coatings disrupting the balance of the market. Therefore, we must learn to distinguish between good and bad powder coatings when purchasing. Here we share a relatively simple method-appearance identification method.
1. Volume
The larger the volume, the less filler in the powder coating and the higher the cost. The better the powder quality. The smaller the volume, the higher the filler in the powder coating and the lower the cost. The worse the powder quality. For the same carton, see which one has a large powder volume, which is a good powder, and which one has a small volume, which is a bad powder. It is not easy to spray, there is a lot of secondary powder falling, the waste is large, the spraying area is small, and the use cost is high.
2. Feel
The hand feels smooth, fluffy and floating like silk. It feels rough, heavy and heavy. Grab a handful of powder in your hand. The smoother and more fluffy the powder is, the better the quality is. On the contrary, the rougher the powder is, the heavier it feels, and the poorer the quality is. It is not easy to spray, and there is a lot of secondary powder falling, which is wasteful.
3. Storage time
Good powder can be stored for a long time, and the powder leveling and other effects remain unchanged. Poor powder cannot be stored for a long time. The leveling and other effects of poor powder will deteriorate after 3 months. The shelf life of normal powder at room temperature is 12 months. The quality of low-end raw materials is unstable and easy to deteriorate. The use of poor raw materials to produce powder will accelerate the powdering and aging of the sprayed surface after half a year. Affecting customer reputation. In addition, the powder is not easy to store, which causes customers to waste a lot of powder and charge more.
