Different surface treatments and performance comparison of aluminum alloy profiles
powder spraying and fluorocarbon painting have various colors, while the color of electrophoretic painting is monotonous, generally only the color of previous anodizing. On the surface, electrophoretic paint and fluorocarbon paint are much smoother than powder paint, while electrophoretic paint keeps the stripes of aluminum profile itself, which can better reflect the true color of aluminum. Powder spray fluorocarbon paint completely covers the aluminum matrix
the gloss of anodic oxidation and fluorocarbon paint products is generally in the range of low light, the powder spraying is optional from matte to high light, and the gloss of electrophoretic paint is generally in the range of high light
adhesion of coating
from the perspective of standard requirements, the adhesion requirements of powder coating, fluorocarbon coating and electrophoretic coating are consistent. However, from the actual use and test results, electrophoretic painting is the best, followed by fluorocarbon painting, and powder spraying is relatively poor
hardness can be examined from two aspects: surface hardness and wear resistance under constant temperature. In terms of surface hardness, the anodic oxide film is the hardest, followed by fluorocarbon coating. From the test, it is difficult to compare the hardness of powder coating and electrophoretic paint film, but from the actual use effect, powder coating is more difficult to scratch than electrophoretic paint film. In terms of wear resistance, anodic oxide film, electrophoretic paint film, fluorocarbon coating and powder coating are followed
the alkaline resistance of anodic oxide film is the worst, and fluorocarbon coating is the best. When corroded by alkali, the powder coating is easier to change color and lose light than the electrophoretic paint film, but the electrophoretic paint film is easier to corrode the substrate than the powder coating
acid resistance and salt spray corrosion resistance
from the standard, actual test and use, the acid resistance and salt spray corrosion resistance are fluorocarbon coating, powder coating, electrophoretic paint film and anodic oxide film in turn
the electrophoretic paint film cannot resist the fixture described in gb13022 (9) 1 "test method for tensile properties of plastic films": "The experimental machine should be equipped with fixtures that are suitable for rapid wear. Some solvents corrode, and the powder coating has a certain resistance to almost all solvents, but the fluorocarbon coating is more resistant to solvent erosion.
boiling water resistance
the powder coating will show slight discoloration after 2 hours of boiling water, while the electrophoretic paint film is still difficult to see any change after 5 hours of boiling water.
From the perspective of UV protection, electrophoretic paint film is definitely much better than powder coating, but under normal environmental conditions, the weather resistance of these two coatings should be equal. Compared with fluorocarbon coating, the weatherability of electrophoretic paint film and powder coating is far from that of fluorocarbon coating at all
since its establishment, Xingfa aluminum can properly contain some LDPE and LLDPE surfaces, introduce world advanced production equipment, and form many production lines. The surface treatment methods covered include oxidation, electrophoresis, spraying, fluorocarbon, heat transfer printing wood grain and heat insulation (threading and glue injection), etc. the physical and chemical properties of each product are superior