Water-based low-surface-treatment coating as well as preparation method and application thereof

A low surface treatment and coating technology, applied in anti-corrosion coatings, coatings, etc., to achieve the effect of simple method, easy operation, and avoidance of damage

Inactive Publication Date: 2021-04-16
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The second object of the present invention is to provide a method for preparing a water-based low surface treatment coating, which uses an acidic group-modified water-based acrylic acid to solve the problem of compatibility between high-performance acid rust conversion functional components and water-based resins , to ensure the safety and environmental protection of the use

Method used

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  • Water-based low-surface-treatment coating as well as preparation method and application thereof
  • Water-based low-surface-treatment coating as well as preparation method and application thereof
  • Water-based low-surface-treatment coating as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Prepare raw materials according to the following mass ratios: 200 parts of acidic group modified acrylic resin emulsion (pH2-4), 20 parts of rust conversion functional components (phosphoric acid), 10 parts of functional corrosion inhibitor (zinc phosphate), 8 parts of penetrating agent (glycerin) 1 part, 1 part of defoamer (organic silicon modified defoamer), 60 parts of deionized water.

[0051] (1) Dissolve 20 parts of phosphoric acid, 10 parts of zinc phosphate, and 8 parts of glycerin in 60 parts of deionized water, and stir at 1000 rpm for 0.5 h to obtain component A;

[0052] (2) Add 1 part of silicone-modified defoamer to 100 parts of acid group-modified acrylic resin emulsion and stir at 100 rpm for 0.5 h to obtain component B;

[0053] (3) Slowly add component A in step (1) to component B in step (2) to prepare a mixed solution, and stir at 100 rpm for 0.5 h for later use.

Embodiment 2

[0055] The raw materials are prepared according to the following mass ratios: 200 parts of acidic group modified acrylic resin emulsion (pH2-4), 30 parts of rust conversion functional components (a mixture of phosphoric acid and phytic acid at a ratio of 9:1), functional corrosion inhibitor (zinc phosphate and aluminum tripolyphosphate at a ratio of 1:1) 12 parts, penetrating agent (a mixture of glycerin and EDTA at a ratio of 1:1) 10 parts, defoamer (organosilicon modified defoamer) 1 part, deionized 60 parts of water.

[0056] (1) Dissolve 30 parts of a mixture of phosphoric acid and phytic acid, 10 parts of a mixture of zinc phosphate and aluminum tripolyphosphate, 8 parts of a mixture of glycerin and EDTA in 60 parts of deionized water, and stir at 1000 rpm for 1 hour to obtain component A;

[0057] (2) Add 1 part of silicone-modified defoamer to 100 parts of acid group-modified acrylic resin emulsion and stir at 100 rpm for 0.5 h to obtain component B;

[0058] (3) Slowl...

Embodiment 3

[0060] Prepare raw materials according to the following mass ratio: 200 parts of acidic group modified acrylic resin emulsion (pH2-4), rust conversion functional components (a mixture of phosphoric acid, phytic acid, tannic acid and acetic acid at a ratio of 7:1:1:1) 40 parts, functional corrosion inhibitor (a mixture of zinc phosphate, aluminum tripolyphosphate and hexamethylenetetramine at a ratio of 1:1:1) 12 parts, penetrating agent (glycerin, EDTA and flattened at a ratio of 2:1:1) mixture) 10 parts, defoamer (organic silicon modified defoamer) 1.5 parts, deionized water 30-80 parts.

[0061] (1) Dissolve 40 parts of phosphoric acid, phytic acid, tannic acid, acetic acid mixture, 12 parts of zinc phosphate, aluminum tripolyphosphate, hexamethylenetetramine mixture, 10 parts of glycerin, EDTA and flat plus mixture in 60 part deionized water, stirred at 1000rpm for 1h to obtain component A;

[0062] (2) Add 1.5 parts of silicone-modified defoamer to 200 parts of acid group...

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Abstract

The invention discloses a water-based low-surface-treatment coating as well as a preparation method and application thereof. The coating is prepared by mixing a modified water-based acrylic emulsion, a rust conversion functional component, a functional corrosion inhibitor, a defoaming agent and the like according to certain parts by mass, according to the invention, an acidic rust conversion functional component is used as a main functional auxiliary agent, is dissolved in water together with a modified acrylic emulsion, and is mixed with other auxiliary agents to obtain the water-based low-surface treatment coating. The low-surface-treatment coating is simple in preparation process, safe and environmentally friendly, has a good rust conversion function on a rust layer with a certain thickness, and is suitable for large-scale engineering application.

Description

technical field [0001] The invention belongs to the technical field of low surface treatment coatings, and in particular relates to a water-based low surface treatment coating and its preparation method and application. Background technique [0002] Organic anti-corrosion coatings are the most widely used anti-corrosion means. The traditional theory holds that the protective effect of anti-corrosion coatings includes the following mechanisms: (1). Shielding effect, (2). Chemical protection effect, (3). Electrochemical protection. However, follow-up studies have shown that the combination of the coating / metal interface is a key factor in determining the protective performance of the coating on the base metal. For this reason, it is necessary to have good wettability on the metal surface, that is, the surface energy of the metal surface needs to be lower than that of the paint, so that the paint can be applied. Generally, the clean metal surface (such as after a thorough sandb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/08
Inventor 宋东东李健鹏万红霞边怡民
Owner JINAN UNIVERSITY
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