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    Home > Coatings News > Paints and Coatings Market > Paint knowledge | identification method of powder coating quality

    Paint knowledge | identification method of powder coating quality

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    The core tip: powder coating is a completely different form of general coating, it exists in the state of micro powder Because no solvent is used, it is called powder coating The main characteristics of powder coating are harmless, high efficiency, resource saving and environmental protection Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Coating home news: powder coating is a completely different form of general coating It exists in the state of micro powder Because no solvent is used, it is called powder coating The main characteristics of powder coating are harmless, high efficiency, resource saving and environmental protection 1 Appearance identification method: how to distinguish the powder coating with good type and poor quality from the impact on the spraying products? 1 The feel of hand is silky, fluffy and floating The feel of hand is rough, heavy and heavy If you hold a handful of powder in your hand, the smoother the powder is, the better the quality is Otherwise, the rough handle of powder is heavy and the quality is poor It is not easy to spray, and there is more secondary powder falling, and the waste is large 2 The larger the volume is, The less the 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 is For the same cartons, look at the large powder volume of that family, that is the good powder, that family's small volume, that is the poor powder It is not easy to spray, the more the secondary powder falling, the greater the waste, and the less the spraying area, The use cost is high 3 The powder with good storage time can be stored for a long time, and the powder leveling and other effects remain unchanged The poor powder can not be stored for a long time, and the leveling and other effects become worse after 3 months The shelf life of normal powder is 12 months at room temperature, and the product quality of low-end raw materials is unstable and easy to deteriorate The powder is produced with poor raw materials, Spraying surface will accelerate pulverization and aging after half a year, which will affect the reputation of customers In addition, powder is not easy to store, which will cause a large waste of powder and a lot of fees 2 Identification method of spraying area: resin content of normal spraying area powder should be about 55-65%, and resin is about 20 yuan / kg, The filling material is about 2 yuan Some poor powder factories use less than 45% resin content to fill up the inferior, increase the filling material to reduce the cost and spray area Comparison method: two same powder spray the same product, see which one has more powder spray products, which one has less spray products, less spray products are poor, and the use cost is high For the users, the spray area is small, The use cost is high According to the calculation of 6 square meters per kilogram of powder spraying, each less spraying is equivalent to 3-6 yuan per kilogram of powder overpaid by the manufacturer It is recommended that the manufacturer use genuine powder, and carefully check the actual use cost The theoretical spraying area is 8-10 square meters, 6-8 square meters, and the actual spraying area is 4-6 square meters, 3-5 square meters, and the use cost is 3-6 yuan, 4-8 yuan Job identification method of spraying personnel: The powder with good powder loading rate and working efficiency is easy to be sprayed The base material can be covered by spraying 1-3 guns, with less secondary recovery powder and high working efficiency The base material can be covered by spraying 3-5 guns, with more secondary recovery powder and low working efficiency The operator can identify the powder loading rate by spraying, and the powder dropped is not much The products produced at the same time are less, and the powder recovered twice is more, Increase the burden of operators, low work efficiency 4 Baking identification method: whether there is a good powder produced by smoke in the baking process is not produced by a large number of smoke Poor powder produced by a large number of smoke in the baking process Good powder raw materials are not produced by a large number of smoke, and some manufacturers take raw materials filled with materials The amount of powder will increase, the square number of spraying will not come out, increasing the use cost, The products produced by the same amount of powder are less 5 Identification method of appearance and luster of finished products after baking: the powder products with good appearance after baking have fine appearance, full, transparent and strong three-dimensional sense The poor powder products have dim appearance, rigid appearance, foggy surface, opaque and poor three-dimensional sense The comparison between the two boards shows that the appearance is poor, which affects customer reputation and product appearance The powder with good luster has good luster, It can maintain the relative luster for a long time The effect of poor powder glossiness is good when it is baked out, and it will start to shine in a few months The powder made of the material with poor glossiness appearance detection can not maintain the long-term glossiness stability, such as sagittal light, pulverization, depainting, etc, Aging Poor powder adhesion is poor, very brittle It will be aged and powdered from 3 months to half a year after spraying Comparative test of adhesion and bending, and observation of whether the product is aged, powdered, poor adhesion and aging after a few months, the product is easy to age, powdered, rusty, shorten the service life of the product, and affect the reputation of customers 7 High temperature identification method: high temperature, adjust the temperature to 220-230 degrees, The powder with good heat preservation for 10-15 minutes has good temperature and weather resistance After high-temperature baking, the color changes less and the luster changes little The poor powder has poor temperature and weather resistance After high-temperature baking, the color changes seriously and the luster becomes dumb This method is particularly effective for detecting outdoor light color powder The poor powder adopts poor resin, titanium dioxide, poor pigment and filler, with poor temperature and weather resistance and low cost, 8 Environmental protection identification method: the powder materials tested by SGS environmental protection are all produced by large factories, with guaranteed environmental protection There is no way to ensure that the environmental protection does not exceed the standard for a long time for the poor materials and recycled powder The environmental protection SGS testing environmental protection exceeds the standard, causing great economic losses to some export enterprises 9 The way that powder coatings are often fake (Jerry built): 1 Selection of resin and raw materials: epoxy, Polyester is an accessory of oil, authentic oil and its accessories are bulk products The price of materials across the country, from the south to the north, from the west to the East, has little difference The way to fake materials is to replace the inferior ones with black epoxy and black polyester, which are relatively poor in raw materials, All walks of life are the same 2 The ratio of resin and filler: the resin content of normal powder should be about 55-65%, the resin content should be about 20 yuan / kg, and the filler content should be about 2 yuan / kg The content of poor powder resin should be less than 45% to make a good filling, increase the filler 2 yuan / kg to reduce the cost and spray area 3 The proportion of recycled powder: the recycled powder is divided into floor powder and sweeping powder, The powder recovered from the air duct, the powder in the recycling box, the problem powder and the expired powder are recycled by specially assigned person The normal market price of the recycled powder is 1-3 yuan / kg The powder is added according to the proportion of the recycled powder: 100% recycled powder, 80% - 10%, and the prices are different, In the market, the price of recycled powder varies from 8 yuan / kg.12-13 yuan to 16-17 yuan / kg according to the added proportion Adding recycled powder is the main way to make fake powder coating X analysis of the current situation of powder coating: powder coating is a kind of consumable product for processing, the investment threshold is relatively low, and the market competition is fierce, which also causes the powder coating market to be disordered, the phenomenon of cutting work and materials is serious, and the pursuit of short-term interests, It has made a great impact on some genuine enterprises In addition, the powder coating is a powder material, which is not easy to identify It has caused great economic losses to some powder using enterprises The actual consumption of the original product is 3 tons, and the price is cheap through the material falsification The consumption of the powder is increased to 4-5 tons, but the cost of the powder using enterprises is increased Most powder using enterprises only care about the price of the powder, They do not care about the actual cost of use, which causes great losses to the enterprise Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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