Metal powder coating capable of enhancing decorative effect and preparation method thereof

Abstract

The invention provides a metal powder coating capable of enhancing the decorative effect. The metal powder coating is prepared from, by weight, 15-20 parts of a modified polyester compound, 1-3 partsof bentonite, 0.5-1 part of a charge increasing agent, 1.5-4.5 parts of metallic pigment, 0.5-1 part of a degassing agent, 0.2-0.5 part of a dispersing agent, 0.5-1 part of a toughening agent, 0.2-0.5part of a luster enhancing agent, 0.1-0.5 part of a wetting agent, 0.1-0.3 part of a preservative, 0.1-0.3 part of an antioxidant and 0.2-0.5 part of a light stabilizer, wherein the charge increasingagent is beta-hydroxyalkylamide, the degassing agent is stearic acid, the dispersing agent is zinc sulphur, the toughening agent is a pvc toughening agent, the wetting agent is heptadecylimidazole, and the preservative is 5-chloro-2-methyl-4-isothiazolin-3-one. After the raw materials are crushed and mixed, the mixture is extruded through a twin-screw extruder and then subjected to tabletting, cutting, smashing and sieving, and the coating is obtained. The metal powder coating has the advantage that by preparing the modified polyester compound and adding the antioxidant and the light stabilizer, the weather resistance and impact resistance of the metal powder coating are significantly improved.

Description

technical field [0001] The invention belongs to the field of home decoration, and in particular relates to a metal powder coating for enhancing decorative effect and a preparation method thereof. Background technique [0002] Near-metal powder coatings refer to various powder coatings containing metal pigments (such as: copper gold powder, silver aluminum powder, etc.). Because metal powder coatings can show a bright and luxurious decorative effect, they are very suitable for spraying indoor and outdoor objects such as furniture, accessories and cars. In terms of manufacturing process, the domestic market mainly adopts dry-blending method (Dry-Blending), and the bonding method (Bonding) is also used internationally. [0003] Metal powder coatings do not use organic solvents, water and other volatile solvents, so the powder coatings are inorganic solvent-based coatings, which greatly reduces the potential safety hazards caused by solvents, such as the organic solvent poisoni...

AI Technical Summary

Problems solved by technology

As long as the powder coating is directly sprayed on iron or aluminum materials that have undergone proper pretreatment, the surface of the coating film with excellent performance can be obtained after baking, such as the durability of the coating film, including: abrasion resistance, impact resistance, Adhesion, toughness, corrosion resistance and chemical resistance, etc., but its heat resistance and impact resistance still need to be further improved. At the same time, there are uneven powder on the corners, difficult to cover the defects of the coating film after curing, and curing conditions High disadvantage

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