Powder coating has the advantages of high efficiency, energy saving, less pollution, environmental protection, high paint utilization, and good coating performance. The disadvantage is that it is not resistant to sunlight. The advantages of PVDF spray coating is high brightness, thin coating and stable color, strong weather resistance, not easy to fade, and discoloration. We need to choose different spray coating methods according to specific products and requirements.
In the aspect of the aluminum wall panel, powder coating can be used to produce special effects such as various wood grain or stone pattern. Different paint materials PVDF spray coating uses a well-tuned modulated paint, which is a fluid, and powder coating uses a powdered solid. Different spraying sites PVDF spray coating is mainly carried out in a paint booth, and powder spraying is carried out in the powder spraying chamber. Different ways of working PVDF spray coating uses a diaphragm pump or a plunger pump to apply pressure and static electricity for spraying.
Different price For the same brand, the price of powder is generally 10 dollars cheaper than paint. The same treatment before spraying. The powder coating has no solvent and all powders can be recycled. It not only has the characteristics of simplicity, stability, and high efficiency but also saves the cost of solvents, solvent volatilization energy, and environmental protection treatment costs.
Superior performance : Although the weather resistance is exactly the same, the powder coating has the advantages of high hardness, stable production, and small color difference, which can make up for the shortcomings of the insufficient hardness of the liquid fluorocarbon coating on aluminum profiles and other parts.
Definition Chromate treatment is a process to transform the metal surface into a film mainly composed of chromate. The medium used to achieve this conversion. In recent years, with the rapid economic development, the amount of fluorine-containing resin coatings based on polytetrafluoroethylene PTFE , polyvinylidene fluoride PVDF , and fluoroalkane alkyl ethyl.
Polyester paint originated in Italy in the s and is now the main lacquer used for wood products in industrially developed countries. Polyester paint has. PVDF Paint. Contents hide. Share on facebook Facebook. Share on twitter Twitter. Share on linkedin LinkedIn. Share on pinterest Pinterest. Latest Posts. What is chromated? April 21, No Comments. Polyester Paint April 19, No Comments.
Send Inquiry. Related Posts. Polyester Paint Polyester paint originated in Italy in the s and is now the main lacquer used for wood products in industrially developed countries. Get For A Free Quote. Any inquiry, we will reply within 24 hours. Get A Quote. Useful Links. Are you implying that one item the coil is roll-coated with wet paint while the other is powder coated? Hello, can anybody tell me how to test if the coating material on any metal surface is of PVDF?.
I tried to heat the coated metal surface with a cigarette lighter, the coating was intact with only black sooth on the surface which I rubbed with my fingers to find that the coating material was below was intact. Is there any other way to instantly determine if the coated material is of PVDF? I would have to research back to the exact specs but it did not adhere well, the primer or the paint. There were also issues with the paint bubbling. The factory Kynar behaved like teflon.
Would I be most secure if I blasted to bare metal? What type of blasting considering the glass? I want to re-apply a Kynar finish. Advice please. Hello - We manufacture extruded aluminum trims for plaster and drywall applications as well as custom trims in galvanized steel, stainless and copper.
We have done many orders using Kynar or Duranar fluoropolymer coatings on the aluminum trims. We have been told by the licensed applicator that they do not spray Kynar on galvanized steel. I now have my first request for PVDF coating on some common galvanized plaster trims. Can PVDF be sprayed on galv. PVDF P. Hi Bill. I'm quite confident that Kynar is a brand name of PVDF coatings even if your Kynar applicator hasn't studied the chemical nature of Kynar coatings :- My understanding is that alkyd paints are incompatible with galvanizing because it can saponify them, with the resultant soapy layer offering very low adhesion.
I wouldn't have suspected the same problem with PVDF coatings, but I don't actually know enough about their formulation to know whether they will stick to a properly zinc phosphatized galvanized finish or suffer the same problem. Hopefully another reader will know :- Regards,. Hi Bill, Adhesion and cosmetics could be a problem short or long term unless the existing zinc is removed. The applicator probably understands the risk and does not want to "go there". After a while, I noticed that the coating is getting ripped from the GI metal sheet.
What is noticed is that this is happening only in the angles of the formation as shown in the photos attached. Click graphics for higher-rez versions The weather is hot and humid. Any advice about the possible reason? Hi Ahmad. I think the reason you see the pattern you see is because the panels of the sandwich are probably only touching, and only glued, there -- there is no adhesive elsewhere to pull off anything.
But it does look like the galvanizing is suffering from white rust. Unfortunately, these observations probably don't get you any closer to solving the problem. These two pictures are of the same panel I've been working on jigsaw puzzles too much lately and couldn't help seeing it. Is there a picture of the "opposing panel", the one with white rust and from which the galvanized coating we are seeing here was ripped?
Hi Denis. Sorry, I don't know. But that's at least the 3rd time the question has been asked on this thread, so I hope that somebody who knows will get back to us! I wish to write an answer for the above question of "How do you test a surface to see if the coating on it is PVDF? I am an architect and we recently specified vertical corrugated metal panels with a PVDF coating for a project and the panels were installed on a pre-engineered structure.
The owner does not like the selected color and is expecting the surface to be painted in the field to match another color. What are the options in preparing or scarifying the surface for paint?
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