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Aqueous eco-friendly aluminum powder metal paint and preparation method thereof

A metallic paint, water-based technology, applied in the direction of coating, etc., can solve the problems of easy sedimentation of aluminum powder, poor flattening, shrinkage cavity, etc., and achieve the effect of improving the arrangement of silver powder, uniform arrangement of silver powder and reducing the use

Inactive Publication Date: 2015-11-18
ZHAOQING CITY CAIXIN DECORATION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high surface tension of water-based environmental protection silver powder metallic paint (the surface tension of water is 72mN / m, and the surface tension of most organic solvents is between 20-30mN / m), the surface tension of general water-based environmental protection silver powder metallic paint is also relatively large. The following defects and disadvantages of the paint film are likely to occur during installation: poor flatness, shrinkage cavities and pinholes are easy to occur; general water-based paints are easy to hang during construction, aluminum powder is easy to settle, and the silver powder is unevenly arranged after the coating film is baked and dried Generally, the gloss of water-based paint coatings is relatively low. Under the existing technical conditions, the gloss of ordinary water-based environmentally friendly silver powder metallic paint coatings is generally below 80° at an incident angle of 60°

Method used

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  • Aqueous eco-friendly aluminum powder metal paint and preparation method thereof
  • Aqueous eco-friendly aluminum powder metal paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0019] (1) Formula and the weight ratio of each component:

[0020]

[0021] (2) Its preparation method:

[0022] 60 parts of 55% water-soluble acrylic resin, 4 parts of amino resin (melamine formaldehyde resin), 5 parts of metal orientation agent (Eastman CMCAB-641-0.5), 0.5 part of water-based dispersant (BYK-190), water-based defoaming agent Put 0.3 parts of agent (Dow Corning DC-65), 0.2 parts of wetting agent (BYK-341), and 19.6 parts of deionized water into the high-speed disperser according to the above ratio, stir at 800-1200rpm, and add amines while stirring Add 0.4 parts of DMEA until the metal directing agent (Eastman CMCAB-641-0.5) in the mixture is completely dissolved, and the pH value of the test coating is 7.5-8. Then add 10 parts of water-based aluminum-silver paste (Aika PM / PMH8), and stir evenly at low speed.

[0023] (3) Effect: Conduct electrophoresis test on a 50×150mm 6063 aluminum plate to compare the effect. Compared with other silver powder meta...

Embodiment example 2

[0025] (1) Formula and the weight ratio of each component:

[0026]

[0027] (2) Its preparation method:

[0028] 60 parts of 55% water-soluble acrylic resin, 3 parts of amino resin (melamine formaldehyde resin), 6 parts of metal orientation agent (Eastman CMCAB-641-0.5), 1 part of water-based dispersant (BYK-190), water-based defoaming agent Put 0.3 parts of agent (Dow Corning DC-65), 0.3 parts of wetting agent (BYK-341), and 19.6 parts of deionized water into the high-speed disperser according to the above ratio, stir at 800-1200rpm, and add amines while stirring Add 0.4 parts of DMEA until the metal directing agent (Eastman CMCAB-641-0.5) in the mixture is completely dissolved, and the pH value of the test coating is 7.5-8. Then add 12 parts of water-based aluminum silver paste (Aika PM / PMH8), and stir evenly at low speed.

[0029] (3) Effect: Conduct electrophoresis test on a 6063 aluminum plate of 50×150mm to compare the effect. Compared with other silver powder met...

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Abstract

The invention relates to the field of paint making and especially relates to aqueous eco-friendly aluminum powder metal paint and its preparation method and formula. The aqueous eco-friendly aluminum powder metal paint comprises 50-70 parts of water-soluble acrylic resin with a mass fraction of 55%, 3-6 parts of amino resin, 8-12 parts of aqueous aluminum paste, 2-7 parts of a metal orientation agent, 0.5-1 part of an aqueous disperser, 0.1-0.3 parts of an aqueous antifoaming agent, 0.1-0.3 parts of a wetting agent, 0.1-0.8 parts of an amine neutralizer and the balance deionized water. The preparation method utilizes water as a diluent and is free of an organic solvent. The aqueous eco-friendly aluminum powder metal paint film has performances exceeding those of solvent-based paint so that use of the organic solvent in a paint industry is reduced. The aqueous eco-friendly aluminum powder metal paint prevents shrinkage cavity and pin hole, has good leveling effects, effectively prevents sagging and improves aluminum powder arrangement. Aluminum powder arrangement is tidy. The aqueous eco-friendly aluminum powder metal paint film has glossiness of 95% or more at an incidence angle of 60 degrees.

Description

technical field [0001] The invention relates to the field of paint production, in particular to a water-based environment-friendly silver powder metal paint and a preparation method thereof. Background technique [0002] At present, the application of industrial coatings in the world is mainly based on solvent-based coatings. However, with the continuous improvement of environmental awareness in various countries, the use of organic solvents has also put forward higher and higher requirements. In order to reduce the pollution of organic solvents to the environment The environmental protection characteristics of water-based coatings are particularly prominent. All advanced industrial countries have included them in the development direction of industrial coatings in the future and are actively developing them. [0003] Due to the high surface tension of water-based environmental protection silver powder metallic paint (the surface tension of water is 72mN / m, and the surface t...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D7/12
Inventor 白明国
Owner ZHAOQING CITY CAIXIN DECORATION MATERIALS