Method for coating self-drying type metallic glittering paint on machine tool
A kind of metal flash paint, self-drying technology, applied to the surface coating device, coating, polyurea/polyurethane coating and other directions, can solve the problem that precision machine tools cannot be baked at high temperature, and achieve a strong modern high-tech style , The effect of tough paint film and strong metal texture
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Embodiment 1
[0034] A method for coating self-drying metallic flash paint on a machine tool, characterized in that:
[0035] 1a. After pre-fitting the protective cover of the machine tool, carry out normal temperature degreasing, rust removal, surface adjustment and phosphating treatment. The time for rust removal is 15-30 minutes; the time for surface adjustment is 2-5 minutes; the time for phosphating is 15-25 minutes; then Spray evenly the epoxy iron red anti-rust primer on the protective cover of the machine tool;
[0036] 2a. Grind the surface of the castings until there are no protrusions, burrs, and ridges, and evenly apply the epoxy iron red anti-rust primer;
[0037] b. Then, on the basis of spraying the epoxy iron red anti-rust primer (uneven surface, poorly formed surface, defects, etc.) to scrape the putty or the G07-3 perchlorination of the model G07-3 that is matched with the material system Vinyl putty;
[0038] c. Use 1.5-2# emery cloth to fully polish the atomic ash or p...
Embodiment 2
[0056] The storage stability of metallic glitter paint has the following two problems: ① The reactivity of aluminum powder. In the acid-catalyzed system, the aluminum powder pigment will react with the acid to consume part of the acid catalyst, so that the system cannot be completely cured, and the color of the aluminum powder will turn black. Therefore, the choice of partially etherified amino resins and polyols has high reactivity and does not require acid catalysts, which can avoid this problem. ② Settling of aluminum powder. In metallic flash paint, the selection of a suitable anti-settling agent 420-10 is directly related to the anti-settling property, workability, leveling property and even the physical and chemical properties of the film after formation. Four additives were selected: KLN-3212, 201P wax, 6900-20X (DISPARLON) and TYS-1 wax. In the test, it was found that KLN-3212 has good anti-settling properties, but has a yellowing tendency; TYS-1 has poor anti-settli...
Embodiment 3
[0058] The orientation of aluminum powder directly affects the gloss, FI, flop effect and color consistency of metallic glitter paint. Therefore, it is very important to select the appropriate additives in the metallic flash paint to help the aluminum powder to be arranged in an orderly manner during the film formation process. In the formulation and construction design, cellulose acetate butyl (CAB) and wax additives were selected for comparative experiments.
[0059] CAB is a thermoplastic high molecular polymer, which exists on the surface of the coating film after film formation, and a small amount of hydroxyl groups in CAB also participate in the reaction during the curing and natural drying process, which makes the xylene immersion and wiping resistance of the paint film better. However, CAB The glass transition temperature is higher, and the paint film is more brittle at a lower temperature, so the flexibility of the paint film decreases, but it has a good orientation t...
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