Detailed explanation of powder coating identification methods

Update:08 Nov,2019

Identification method:

1. Appearance identification method:

1. Hand feel is silky smooth, loose, floating. Feel rough, heavy hand, heavy hand. Grab a handful of powder in the hand, the powder is smoother and looser, the quality is good, on the contrary, the powder is rough and feels heavy, quality Poor. Not easy to spray, more secondary powder, waste.

2. The larger the volume, the less filler in the powder coating, the higher the cost. The better the powder quality. The smaller the volume, the higher the filler in the powder coating, the lower the cost. The worse the powder quality. The same carton, see The powder of that family is large, that is, good powder, the size of the home is small, that is, the powder is poor. It is not easy to spray, the second powder is more, the waste is large, the spraying area is small, and the use cost is high.

3. The powder with good storage time can be stored for a long time, the powder leveling and other effects are unchanged. The poor powder can not be stored for a long time, the poor powder after 3 months, the leveling is worse and other effects are worse. Normal powder is in The shelf life is 12 months at normal temperature, and the quality of low-end raw materials is unstable and easy to deteriorate. The powder is produced by using poor raw materials. The surface of the sprayed surface will accelerate powdering and aging after half a year. It will affect the customer's reputation. In addition, the powder is not easy to store and is supplied to customers. Causes a large waste of powder and a large fee

2. Spray area identification method:

The resin content of the normal powder of sprayed area should be about 55-65%, the resin is about 20 yuan/KG, and the filler is about 2 yuan. Some bad powder factories use less than 45% resin content to shoddy. Add filler to reduce cost and reduce spray area. Contrast method: two same powder spray the same product, see that one of the powder coating products, that one has less spray products, less spray products are poor, the cost of use High. For the manufacturer, the spraying area is small and the cost of use is high. According to the calculation of 6 square meters per kilogram of powder, each square is sprayed, which is equivalent to 3-6 yuan per kilogram of powder. It is recommended to use the manufacturer. Use genuine powder to carefully calculate your actual cost of use

3. Painting personnel identification method:

Powder on the powder, work efficiency is very easy to spray, spray 1-3 guns can cover the substrate, secondary recovery of less powder, high work efficiency. Poor powder is not good on powder, spray 3-5 guns The substrate can be covered, the secondary recovery powder is more, and the work efficiency is low. The operator can spray the powder rate, and the powder dropped is not much recognized. The product produced at the same time is less, the secondary powder is more, and the operation is increased. Staff burden, low efficiency.

4. Baking identification method:

There is no smoke to produce a good powder. There is not a lot of smoke in the baking process. Poor powder has a lot of smoke during the baking process. Good powder raw materials do not produce a lot of smoke, and some manufacturers take the raw materials to charge. Good material. The amount of powder will increase, the square number will not be sprayed, increase the cost of use, and the same amount of powder will produce less product.

5. The appearance and gloss recognition method of finished products after baking:

The appearance of the powder product after baking is fine, full, transparent and strong. The appearance of the poor powder product is dull, dull, the surface is foggy, impervious, and the stereoscopic effect is poor. The appearance is poor, affecting the customer's reputation and affecting the appearance of the product. The gloss of the powder is good, and the gloss can be maintained for a long time. The poor powder gloss is good when it is baked out, and the cornflower begins after a few months. The powder made of the material with poor gloss appearance can not maintain the long-term gloss stability, and there are sagittal, powder, paint stripping, etc.

6. Adhesion and aging identification method:

Adhesive and aging good powder has strong adhesion and toughness, and can be kept for several years without powdering and aging. Poor powder adhesion is poor, very brittle, aging after 3 months to half a year after spraying, powdering. Contrast test adhesion and bending, and observe whether the product has aging or pulverization after several months. Adhesion and aging are poor, the product is easy to age, powder, rust, shorten product life and affect customer reputation.

Seven. High temperature identification method:

High temperature, the temperature is adjusted to 220-230 degrees, and the powder is kept for 10-15 minutes. The temperature and weather resistance are better. After baking at high temperature, the color change is small, and the gloss changes little. Poor powder, temperature and weather resistance Poor, after high temperature baking, the color change is serious, the gloss becomes dull. This method is especially effective for detecting outdoor light color powder. Poor powder, poor resin, titanium dioxide, poor pigment and filler, temperature and weather resistance. Low cost, shoddy. Huacai Advanced Material Co., Ltd is professional in manufacturing RAL9016(traffic white), RAL7035(light grey), RAL9005(Jet black) powder coating.

Eight. Environmental identification method:

SGS environmental testing Good powder materials are produced by large factories, and environmental protection is guaranteed. Poor materials and recycled powders, there is no way to ensure environmental protection does not exceed the standard for a long time. Environmental protection SGS testing Environmental protection exceeds the standard and causes large economic losses to some export enterprises.

Nine. Analysis of the current status of powder coatings:

Powder coatings are processing consumable products, the investment threshold is relatively low, and the market competition is fierce. It also causes the powder coating market to be in chaos, and the phenomenon of cutting corners is serious. The pursuit of short-term benefits has caused a relatively large impact on some genuine enterprises, plus powder. The paint is a powdery substance, which is not easy to identify, and causes a large economic loss caused by some powder enterprises. The actual amount of the product is 3 tons, and the amount of powder is increased to 4-5 tons by the material falsification, the price is cheap. On the contrary, it increases the cost of powder enterprises. Most of the powder enterprises only care about the price of powder, and do not care about the actual cost of use, causing large losses to the enterprise.