A simple way to identify the quality of aluminum-plastic composite panels

【China Aluminum Industry Network】Aluminum plastic composite panel is a new type of decorative material that consumers love. However, there are some fake and shoddy products on the market. As an ordinary consumer, how do you know the product is good or bad? Here are some simple ways to help consumers make preliminary identification so that consumers can know when they are shopping. 1. The size of its aluminum-plastic composite panel should be standardized, uniform, uniform thickness, smooth surface, and straight plate. When the side of the board is standing on the ground, the product cannot stand still. Lift up the board and weigh it. It should not be too soft. Remove the protective film on the surface of the product and observe that the paint surface should be clean and free of surface defects such as chromatic aberration, spots, scars, uneven gloss, and paint leaks. 2, smell the aluminum plate peeled, there should be no pungent organic solvent smell. 3, look at the thickness in accordance with national standards, the thickness of the outer wall plate should be 4 mm, the thickness of the aluminum plate should be 0.5 mm; the thickness of the inner wall plate should be 3 mm, the thickness of the aluminum plate should be 0.2 mm; the aluminum plate of the outer wall plate is obvious Harder than the aluminum plate inside the wall plate. 4, to see the paint hardness General fluorocarbon paint is slightly more Microsoft than some other paints, consumers can use hard objects to scratch the paint surface, need to carefully understand. 5, to see the paint adhesion can be sharp with a blade in the paint surface of some 1 mm × 1 mm square (should be scribed through the paint film until the aluminum plate), and then taped on the grid and then quickly tear off the film Should not fall off. 6. After boiling, observe that the sample is boiled for 2 hours. After cooling, observe that there should be no glue between the aluminum plate and the plastic. According to the method described above, the paint film should not fall off and be brittle. 7. Corrosion test If possible, dilute sodium hydroxide solution (2% to 5%) can be dripped on the surface of the product and capped (prevent the solution from deteriorating). After several hours of observation, the film should be free from corrosion. 8, scrubbing with solvent can be cotton or soft cloth, etc. can be soaked in butanone slightly hard to wipe back and forth across the paint film 100 times, the paint film should not be erased, this solvent is available in the chemical store. 9, peel test aluminum plate and the core layer should not be easy to peel open, after peeling off the aluminum plate and the plastic core material should have a layer of film pulled. 10. Observe whether the aluminum-plastic composite panel is bent hard and the aluminum-plastic composite panel should not undergo obvious brittle fracture. 11. Compare prices Due to the fact that the prices of main raw materials for aluminum-plastic composite panels are all several, coupled with equipment depreciation, manual management costs, and production profits, prices are certain to the bottom line. At present, the profits from the production of aluminum-plastic composite panels have almost dropped to a low level. The apparently too low price must be a more prominent feature of fake and shoddy products. Of course, the quality of aluminum-plastic composite panels must be judged strictly. Simple identification alone is not enough. For this purpose, the state has issued a national standard for aluminum-plastic composite panels (GB/T17748-1999). If necessary, consumers should go to the state-authorized quality inspection department to perform comprehensive quality assessment according to national standards.