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Metal powder coating and preparation method thereof

A metal powder and coating technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of surface oxidation of metal pigments, particle deformation, and dull metal color on the appearance of coating films.

Inactive Publication Date: 2018-03-30
HEBEI HANGUANG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of the melt extrusion method is simple, and the metal pigment and the powder base material are fully mixed and bonded. However, due to high temperature (130° C.) extrusion and high shear crushing during the preparation process, partial oxidation of the surface of the metal pigment, The particles are deformed or crushed, resulting in a dark metallic color or even no metallic effect on the appearance of the coating film

Method used

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  • Metal powder coating and preparation method thereof
  • Metal powder coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] According to parts by weight, 66 parts of DSM-P5900 polyester resin of DSM (China) Co., Ltd., 5 parts of LC-TGIC of Shandong Longcai New Material Co., Ltd., 24 parts of barium sulfate, Shandong Longcai New Material Co., Ltd. 0.8 parts of leveling agent LC-88, 0.3 parts of benzoin LC-BENZOIN of Shandong Longcai New Material Co., Ltd., 0.3 parts of brightening agent 701 of Ningbo Nanhai Chemical Co., Ltd., 0.4 parts of antioxidant 1010 of BASF (China) Co., Ltd. 1.2 parts of pigment titanium dioxide R966 from Sichuan Lomon Group Co., Ltd., 0.0001 parts of C.I Pigment Red 101, 0.2 parts of 151 Yellow, and 0.6 parts of C.I Pigment Red 43 were imported into a flip-type automatic mixer for mixing, and the mixing time was 10 minutes; Extrude the mixed material with a twin-screw extruder at a temperature of 130°C; cool the extruded material to room temperature and crush it with a pulverizer to obtain powder particles with an average particle size of 50 μm; take the base powder in...

Embodiment 2

[0026] According to parts by weight, 60 parts of TL-3A series polyester resins of Tinno Group (Hong Kong) Co., Ltd., 4 parts of TGIC of Changzhou Niutang Chemical Factory Co., Ltd., 30 parts of barium sulfate, streams of Ningbo Nanhai Chemical Co., Ltd. 0.6 parts of leveling agent GLP588, 0.3 parts of benzoin from Lu'an Jietongda Chemical Co., Ltd., 0.3 parts of brightening agent 701 from Ningbo Nanhai Chemical Co., Ltd., 0.4 parts of antioxidant B900 from Lu'an Jietongda Chemical Co., Ltd., Sichuan 4 parts of pigment titanium dioxide R966 from Lomon Group Co., Ltd., 0.0005 parts of carbon black MA100, 0.02 parts of C.I pigment red 48:2, and 0.3795 parts of C.I pigment yellow 31 are introduced into the flip-type automatic mixer for mixing, and the mixing time is 10 minutes Extrude the mixed material with a twin-screw extruder at a temperature of 130°C; after the extruded material is cooled to room temperature and crushed, it is pulverized into powder particles with an average p...

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Abstract

The invention relates to a metal powder coating and a preparation method thereof, belonging to the technical field of powder coating. The metal powder coating is prepared by bonding base powder and aluminum powder, wherein the mass of the aluminum powder is 1-3% of that of the base powder; according to the formula, the base powder is prepared from 60-70 parts of carboxyl terminated saturated polyester resin, 4-5 parts of triglycidyl isocyanurate, 10-30 parts of filler, 0.6-1 part of a leveling agent, 0.3-1 part of benzoin, 0.3-0.8 part of a luster-enhancing agent, 0.3-0.5 part of an antioxidant and 0.1-5 parts of common pigment. The preparation method comprises the steps of mixing the components of the base powder, carrying out melt extrusion, tabletting and crushing, grinding and screening to obtain the base powder; putting the base powder into a bonding machine, adding the aluminum powder, gelatinizing for 200-300s, and bonding to obtain the metal powder coating. The metal powder coating is proper in components and content ratio; the adopted preparation method is good in bonding effect and good in metal twinkling effect; the coating is excellent in chemical resistance and physical and mechanical properties, stable in product quality and good in construction performance.

Description

technical field [0001] The invention relates to a metal powder coating and a preparation method thereof, in particular to a metal powder coating capable of achieving metallic shiny effects, and belongs to the technical field of powder coatings. Background technique [0002] Powder coating is a solvent-free 100% solids powder coating. It has the characteristics of no solvent, no pollution, recyclable, environmental protection, saving energy and resources, reducing labor intensity and high mechanical strength of the coating film. Widely used in home appliances, automobiles, ships, pipelines, construction projects, outdoor facilities, and general industrial products. During application, the powder coating relies on the principle of electrostatic adsorption. The atomized powder is emitted from the spray gun, adsorbed to the workpiece to be sprayed, and then enters the high-temperature curing box for complete curing to form a film, forming a uniform, meticulous and compact surfa...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D5/03C09D7/61
CPCC09D167/00C08K2003/0812C08K2003/2241C08K2003/3045C09D5/033
Inventor 马春霞王磊周国栋邓昊周艳彬
Owner HEBEI HANGUANG HEAVY IND
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