Powder coating with good weather resistance and method for preparing powder coating

Abstract

The invention provides powder coating with good weather resistance. The powder coating is made of, by weight, 50-60 parts of epoxy resin, 20-30 parts of acrylic resin, 3-4 parts of diethyl glutaric anhydride, 1-2 parts of imidazole, 4-6 parts of chlorinated rubber, 0.1-0.4 part of hindered amine light stabilizers, 0.2-0.4 part of benzotriazole light stabilizers, 0.3-0.5 part of tetrabutyl amine-di-[methyl orthophthalic disulfide] complex copper, 12-16 parts of sepiolite powder, 3-5 parts of short fibers, 10-15 parts of carbon black, 2-3 parts of mica powder, 1-2 parts of diethylene glycol monobutyl ether, 10-15 parts of precipitated barium sulfate, 2-4 parts of castor oil, 2-4 parts of aluminum powder, 0.5-1.0 part of benzoin, 0.2-0.5 part of 2, 6-tert-butyl-4-methylphenol, 0.1-0.3 part of bis-n-dodecanol ester and 3-5 parts of modifying auxiliaries. The powder coating has the advantages that the powder coating is high in application property and adhesion and short in curing time, the weather resistance of the powder coating can reach 20 years, and films are good in leveling property and appearance.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a powder coating with good weather resistance and a preparation method thereof. Background technique [0002] With the advancement of modern science and technology and the development of modern industry, the problem of environmental pollution has become increasingly prominent, which poses a great threat to human beings themselves and the environment on which human beings depend. Traditional coatings will produce a large amount of toxic and harmful waste gas and waste water during the manufacturing process or during the construction process, which will pollute the environment, air and water resources, especially solvent-based coatings, which will release Volatile organic compounds (VOC) into the atmosphere, its amount has reached more than 50%, causing serious secondary pollution. This problem has attracted the attention of many industrial countries. [0003] Powder coatings generally co...

AI Technical Summary

Problems solved by technology

From the perspective of energy saving and consumption reduction, if the curing time is too long, the production cycle will be directly extended. On the one hand, it will cause energy waste, on the other hand, it will consume time, and the effective improvement of labor productivity will not be realized.

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