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A water-based metal coating

A water-based metal coating and metal salt technology, applied in the coating and other directions, can solve the problems of chemical reaction deterioration, use restrictions, and high metal powder prices, and achieve the effects of no VOC emissions, long shelf life, and simplified production processes.

Active Publication Date: 2016-03-23
广东顺德三阳化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, because the metal powder is unstable in water and air, it often undergoes chemical reactions and deteriorates. Because of the need for special treatment on the surface, the metal powder used in water-based paints is expensive and its use is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of component A: 6g / L copper sulfate, 35g / L potassium sodium tartrate, 1g / L potassium hydroxide, 0.4g / L heteropoly acid salt (glutamic acid type heteropoly acid salt), 0.1g / L ethanolamine and water;

[0033] Prepare component B: 15g / L sodium borohydride, 0.5g / L sodium hydroxide and water;

[0034] Mix component A and component B according to the volume ratio of 1:2, the pH value of the mixed solution is 12-13, and spray-plate it on the sample at room temperature to obtain a metal copper mirror layer.

[0035] The metallic copper mirror surface layer obtained in embodiment 1 is carried out adhesion detection: draw the scratch that interval is 2mm on the metallic copper mirror surface layer with steel sharp knife, and ensure that scratch reaches substrate deeply, each six vertically and horizontally, obtain 25 2mm ×2mm small squares; after that, use the tape sticking experiment to count the number of small squares that are glued off, so as to score the adhesio...

Embodiment 2

[0037] Preparation of component A: 35g / L nickel sulfate, 8g / L sodium citrate, 0.2g / L LEDTA stabilizer and water;

[0038] Prepare component B: 25g / L aqueous solution of sodium hypophosphite;

[0039] Mix component A and component B according to the volume ratio of 1:1.5, the pH value of the mixed solution is 9-10, and spray-plate it on the sample under the condition that the temperature does not exceed 40°C to obtain a metal nickel mirror layer .

[0040] The metal nickel mirror layer obtained in Example 2 was tested for adhesion, and the effect was 5 points.

Embodiment 3

[0042] Prepare component A: 15g / L silver nitrate, 35g / L ammonia water, 1g / L sodium hydroxide, 0.5g / L ethanol and water;

[0043]Prepare component B: 8g / L acetaldehyde, 15g / L glucose and water;

[0044] Mix component A and component B according to the volume ratio of 1:1, the pH value of the mixed solution is 10-11, and spray-plate it on the sample at room temperature to obtain a metallic silver mirror layer.

[0045] The metallic silver mirror layer obtained in Example 3 was tested for adhesion, and the effect was 4 points.

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PUM

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Abstract

The invention provides water-based metal paint. The water-based metal paint comprises a component A and a component B, wherein the component A comprises 3g / L-50g / L of metal salts, 0.1g / L-5g / L of stabilizer and water; the component B comprises 5g / L-50g / L of reducing agent and water. Compared with the prior art, the invention adopts water-based paint is free of VOC (volatile organic compounds) emission and is more environment-friendly; meanwhile, according to the water-based metal paint disclosed by the invention, redox reaction is utilized, metal salts are used as raw materials, and the production process is simplified; moreover, the prepared water-based metal paint is longer in quality guarantee period; by adding a complexing agent to provide covalent bonds and ionic bonds, the water-based paint disclosed by the invention achieves metal mirror-surface effect.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a water-based metal coating. Background technique [0002] With the advancement of science and technology and the rapid development of the national economy, people's awareness of environmental protection is increasing day by day, their health requirements are getting higher and higher, and environmental protection laws and regulations are becoming more and more perfect. Saving money and energy and protecting the environment have become the main problems faced by the global coatings industry. The development of water-based paint has been valued worldwide: in developed countries in Europe and America, the penetration rate of water-based paint has reached more than 80%. The coatings industry can be roughly divided into three application fields, and water-based coatings have an absolute advantage in industrially developed countries, such as 93% in Germany, and 60% even in Norway, wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12
Inventor 任国华任玉杰
Owner 广东顺德三阳化学有限公司