Powder coating is a new solvent-free 100% solid powder coating with solvent-free, non-polluting, recyclable, environmentally friendly, energy-saving and resource-saving, labor-intensive and high mechanical strength of coating film. Features, very popular with consumers, but also because some unethical businesses for the benefit of shoddy, the following small series to introduce you to the 8 small tricks of powder coating quality:
Good or bad identification of powder coating: 1, appearance recognition method
1. Feel: The hand is silky smooth, loose, floating. Feel rough, heavy hand, heavy hand. Grab a handful of powder in the hand, the smoother the powder, the better the quality, and vice versa, the rough powder feels heavy, Poor quality. It is not easy to spray, and it is more wasteful and wasteful.
2. Volume: 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, Look at the powder size of that family, it 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, storage time: good powder can be stored for a long time, powder leveling and other effects are unchanged. Poor powder can not be stored for a long time, poor powder after 3 months, leveling deterioration and other effects become worse. Normal powder The shelf life is 12 months at room temperature, the quality of low-end raw materials is unstable, and it is easy to deteriorate. The powder is produced by using poor raw materials. After spraying for half a year, the surface will accelerate powdering and aging. It will affect the customer's reputation. In addition, the powder is not easy to store. The customer caused a waste of powder and reported more.
Powder coating good or bad identification skills: 2, spray area identification method
The resin content of normal powder 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 and increase. Filling materials to reduce costs and reduce the 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, high cost of use. For the use of manufacturers, the spraying area is small, the cost of use is high. According to the calculation of 6 square meters per kilogram of powder, each square is sprayed less than the manufacturer, and the manufacturer pays 3-6 yuan per kilogram of powder. It is recommended to use genuine manufacturers. Powder, carefully calculate your actual cost of use.
Powder coating good and bad identification skills: 3, spraying staff work efficiency
Good powder is very easy to spray. It can cover the substrate with 1-3 guns. The secondary powder is less and the work efficiency is high. The poor powder is not good for powder. It can be covered with 3-5 guns. The secondary recycling powder is more, the work efficiency is low. The operator can spray the powder rate, and the powder dropped is not much recognized. The output of the product is less at the same time, the secondary recycling powder is more, the burden of the operator is increased, and the work efficiency is low. .
Good or bad identification of powder coating: 4, baking identification method
Good powder does not produce a large amount of smoke during the baking process. Poor powder has a large amount of smoke during the baking process. Good powder raw materials do not produce a large amount of smoke, and some manufacturers take the raw materials to fill the material. The amount of use will increase, the square number will not be sprayed, the cost of use will increase, and the same amount of powder will produce less product.
Good or bad identification of powder coating: 5, finished product appearance and gloss recognition after baking
Good powder products are exquisite, full, transparent and strong in three-dimensional. Poor powder products have a dull appearance, dull, dull surface, impervious, and poor stereoscopic effect. The two panels face poorer appearance and affect customers. Reputation, affecting the appearance of the product. The gloss of the powder is good, and the gloss is good for a long time. The poor gloss of the powder is good when it is baked out, and the yam is started after a few months. The powder made by the material can not maintain the long-term gloss stability, and there are sagittal, powdered, paint stripping and the like.
Good or bad identification of powder coating: 6, adhesion and aging identification method
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 after observation for a few months, the product has no aging, powdering. Adhesion and aging are poor, the product is easy to aging, powdering, rusting, shortening the service life of the product and affecting the customer's reputation.
Good or bad identification of powder coating: 7, high temperature identification method
Adjust the temperature to 220-230 degrees, keep warm for 10-15 minutes, good powder, temperature and weather resistance is better, after high temperature baking, the color change is small, the gloss changes little. Poor powder, poor temperature and weather resistance, severe discoloration after high temperature baking, dull gloss, this method is particularly effective for detecting outdoor light color powder.
Good or bad identification of powder coating: 8, environmental identification method
Good powder materials are produced by large factories, environmental protection is guaranteed. Poor materials and recycled powders. There is no way to ensure environmental protection is not exceeded for a long time. Environmental SGS testing helps to distinguish the environmental quality of powder coatings.
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