Organic-inorganic hybrid silane metal waterborne anti-corrosion coating and preparation method thereof

A technology of anti-corrosion coatings and hybrid silanes, applied in the direction of anti-corrosion coatings, inorganic chemistry, chemical instruments and methods, etc., can solve the problems of poor wettability, not very mature, insufficient stability, etc., to improve anti-oxidation performance, Improve anti-corrosion performance, improve toughness and adhesion effect

Inactive Publication Date: 2012-10-10
HUANGSHAN HENGTAI INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although my country has made a series of progress in the development of silanization surface treatment technology, it is still in the laboratory stage. In terms of comprehensive performance, there are still the following problems: 1. Insufficient stability
2. Poor wettability
As far as the current domestic technology is concerned, it is not very mature, especially in the selection of organic functional groups, there are still many shortcomings

Method used

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  • Organic-inorganic hybrid silane metal waterborne anti-corrosion coating and preparation method thereof
  • Organic-inorganic hybrid silane metal waterborne anti-corrosion coating and preparation method thereof
  • Organic-inorganic hybrid silane metal waterborne anti-corrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: The anticorrosion coating preparation that is suitable for the metal surface spraying of large workpiece

[0030] Including the following steps:

[0031] 1. Add alkoxy orthosilicate (10 parts) and ethanol (5 parts) into water (56 parts), stir well to form a mixed solution A;

[0032] 2. Add trimethoxy-terminated polyoxypropylene silane oligomer (5 parts), ethoxy-terminated dimethylsilane oligomer (6 parts), and acetylacetone (1 part) into the mixture A, and stir After homogenization, mixture B is formed;

[0033] 3. Adjust the pH value of the mixture B to 8-10 with sodium hydroxide solution, raise the temperature to 30-50° C., and stir in a sealed environment for not less than 2 hours to obtain silica sol C.

[0034] 4. Add ZrOCl 2 ·8H 2 O (2 parts), acetylacetone (1 part), ethanol (6 parts), and water (3 parts) were mixed uniformly in proportion, and stirred at room temperature for 2 hours to prepare zirconium sol D.

[0035] 5. Mix the above-mention...

Embodiment 2

[0036] Embodiment 2: Preparation of anti-corrosion coating suitable for spraying metal surfaces of large workpieces.

[0037] Including the following steps:

[0038] 1. Add alkoxy orthosilicate (20 parts) and ethanol (10 parts) into water (39 parts), stir well to form a mixed solution A;

[0039] 2. Add trimethoxy-terminated polyoxypropylene silane oligomer (5 parts), ethoxy-terminated dimethylsilane oligomer (8 parts), and acetylacetone (1 part) into the mixture A, and stir After homogenization, mixture B is formed;

[0040] 3. Adjust the pH value of the mixture B to 8-10 with sodium hydroxide solution, raise the temperature to 30-50° C., and stir in a sealed environment for not less than 2 hours to obtain silica sol C.

[0041] 4. Add ZrOCl 2 ·8H 2 O (2 parts), acetylacetone (1 part), ethanol (6 parts), and water (5 parts) were mixed uniformly in proportion, and stirred at room temperature for 2 hours to prepare zirconium sol D.

[0042]5. Mix the above-mentioned silica...

Embodiment 3

[0043] Embodiment 3: be applicable to the anticorrosion coating preparation of various brushing techniques

[0044] Including the following steps:

[0045] 1. Add alkoxy orthosilicate (10 parts) and ethanol (5 parts) into water (66 parts), stir well to form a mixed solution A;

[0046] 2. Add trimethoxy-terminated polyoxypropylene silane oligomer (8 parts), ethoxy-terminated dimethylsilane oligomer (10 parts), and acetylacetone (2 parts) into the mixture A, and stir After homogenization, mixture B is formed;

[0047] 3. Adjust the pH value of the mixture B to 4 with hydrochloric acid, raise the temperature to 30-50°C, and stir in a sealed environment for not less than 2 hours to obtain the silica sol C.

[0048] 4. Add ZrOCl 2 ·8H 2 O (2 parts), acetylacetone (1 part), ethanol (4 parts), and water (4 parts) were mixed uniformly in proportion, and stirred at room temperature for 2 hours to prepare zirconium sol D.

[0049] 5. Mix the above-mentioned silica sol C and zircon...

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Abstract

The invention relates to an organic-inorganic hybrid silane metal waterborne anti-corrosion coating which comprises the following components in part by weight: 10 to 20 parts of alkoxy ortho-silicate ester, 1 to 2 parts of ZrOC12.8H2O, 10 to 20 parts of ethanol, 1 to 4 parts of acetylacetone, 5 to 10 parts of trimethoxy terminated polypropylene oxide oligomer, 5 to 10 parts of ethyoxyl terminated dimethylsilane oligomer, 2 to 5 parts of polyving akohol and 40 to 70 parts of water. A preparation method of the organic-inorganic hybrid silane metal waterborne anti-corrosion coating comprises the following preparation steps of: 1, adding the alkoxy ortho-silicate ester and the ethanol into the water and uniformly stirring to form mixed solution A; 2, adding the trimethoxy terminated polypropylene oxide oligomer, the ethyoxyl terminated dimethylsilane oligomer and acetylacetone into the mixed solution A and uniformly stirring to form a mixture B; 3, regulating the pH value of the mixture B into the range of 8 to 10 by sodium hydroxide, heating to the temperature of 30 to 50 DEG C and carrying out seal stirring for at least two hours to prepare silica sol C; 4, uniformly mixing the ZrOC12.8H2O, the acetylacetone, the ethanol and the water according to the proportion and stirring for 2 hours at room temperature to prepare zirconium sol D; and 5, mixing the silica sol C and the zirconium sol D according to the proportion, adding the polyving akohol solution and uniformly stirring to obtain the organic-inorganic hybrid silane metal waterborne anti-corrosion coating.

Description

technical field [0001] The invention relates to an organic-inorganic hybrid silanized anti-corrosion water-based coating, in particular to an organic-inorganic hybrid silane metal water-based anti-corrosion coating and a preparation method thereof. Background technique [0002] Nano-silanization metal surface treatment technology and process is a new type of metal surface pre-treatment technology that is developing rapidly. It has a high level of industrial application abroad and can meet the requirements of automobiles, home appliances and other industries. It has the characteristics of low comprehensive treatment cost and good compatibility with electrophoretic coatings, powder coatings, solvent-based coatings, etc. According to the test, the nano-silane treatment agent can be used for the pre-treatment of various metal materials such as steel and alloys, aluminum and alloys, zinc and alloys, magnesium and alloys, and can be matched with related subsequent organic coatings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08C01B33/145C01G25/02
Inventor 王峰汪十荣程妤
Owner HUANGSHAN HENGTAI INDAL
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