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Metal powder coating, preparation thereof and coating metallic plate
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A metal powder, metal plate technology, applied in powder coatings, coatings, polyester coatings, etc., can solve the problem of not getting coatings, improving the flow performance of fluidization accelerators for ultra-fine powder coatings, and not mentioning the preparation of ultra-fine powders Coating and other problems, to achieve the effect of reducing coating thickness, good powder fluidization performance, and highlighting hiding power
Inactive Publication Date: 2013-06-19
辉旭微粉技术(上海)有限公司
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However, there is no mention of preparing ultra-fine powder coatings, nor adding a fluidization accelerator to ultra-fine powder coatings to improve the flow properties, nor does it obtain a coating with a coating thickness of 20-35 μm
In addition, the research and preparation of metal powder fluorocarbon coatings have not been reported
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Embodiment 1
[0070] Add 15.0kg of mixed organic solvent (butanone:toluene:ethanol=70:25.5) in a 30-liter mixing tank, and then add the following substances under stirring:
[0071] Polyester resin 6.0kg DSM 5900
[0072] Curing agent TGIC 0.5kg VanticoT810
[0073] Benzoin 0.04kg Ningbo Nanhai Chemical Co., Ltd.
[0074] Iron black pigment 0.2kg BASF
[0075] Leveling agent 0.1kg Worlee PV88
[0076] Disperse at high speed for more than 30 minutes, check the fineness, and stop the dispersion when the fineness reaches below 50 μm. Add 1.0 kg of coated aluminum silver paste (80% solid content), and stir slowly for 30 minutes. The above liquid is subjected to aerosol atomization and granulation, the inlet temperature of the heated air is 110°C, the outlet temperature is 50°C, the spray pressure is 0.5, and the atomization effect of the nozzle is adjusted to make the obtained powder into a spherical shape with an average particle size of 20 μm. The product has good leveling performance, ...
Embodiment 2
[0078] As in Example 1, but adjust the spray pressure to 0.3, and adjust the atomization effect of the nozzle, so that the particle size of the obtained powder is 35 μm. The thickness of the obtained coating was 80 μm, and the surface of the coating had a metallic effect, but had the characteristic large orange pattern of ordinary powder coatings.
Embodiment 3
[0080] As in Example 1, but adjust the spray pressure to 0.6, and adjust the atomization effect of the nozzle, so that the particle size of the obtained powder is 10 μm. Add 1.0% fumed silicon dioxide and mix evenly, the obtained coating film thickness is 25 μm, the coating surface is very smooth, the hiding power is good, and it has a metal surface effect.
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Abstract
The invention provides a routine and superfine metal powder coating, a method for preparing the same and an application in a metal plate. A metal powder body is spherical; the grain diameter is 10 to 50 mu m; the optimal grain diameter is 10 to 25mu m; the preparation method comprises the following steps that: organic solvent is adopted to dissolve coating resin, then pigment and filler are added, dispersed at a high speed or dispersed by a sand mill; metal pigment is added and mixed; and the viscosity is adjusted for pressurizing, spraying and drying, thereby obtaining a metal powder coatingpowder body of the metal pigment evenly coated with the resin. The metal powder coating prepared by the invention is widely applied to buildings, home appliances, furniture, automobiles and other industries. The metal powder coating, the method and the application effectively solve the problems that: the prior art is difficult to produce the metal powder coating with even electricity; a product coating is uneven and the thickness of the product coating is too high; and the manufacturing method has complex manufacturing process, difficult implementation, high cost, etc.
Description
technical field [0001] The invention relates to a metal powder paint, its preparation method and its application on coated metal plates. Background technique [0002] Powder coating is a powdery substance composed of resins, pigments, fillers and additives, among which the resin component as the main film-forming substance can be a resin and its curing system, or a mixture of several resins. [0003] Powder coatings are mainly divided into thermoplastic powder coatings and thermosetting powder coatings according to their film-forming resin properties. The former is a physical melting plasticization film forming process, and the latter is a chemical crosslinking reaction curing process. [0004] Thermoplastic powder coatings are obtained from thermoplastic resins, pigments, fillers, plasticizers and stabilizers through dry mixing or melt mixing, pulverization, and sieving and classification. [0005] Thermosetting powder coatings are composed of thermosetting resins, curing...
Claims
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Application Information
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