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A kind of water-based antirust liquid special for aluminum and preparation method thereof

A kind of anti-rust liquid, water-based technology, applied in the direction of anti-corrosion coatings, coatings, polyester coatings, etc., can solve the problems of difficult removal of white spots, the impact of on-site production efficiency, etc., to ensure the continuity of film formation and excellent alkali corrosion inhibition performance , the effect of increasing the dilution ratio

Active Publication Date: 2022-05-20
沈阳防锈包装材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

White spots are difficult to remove, and usually can only be removed by grinding, which undoubtedly has a great impact on on-site production efficiency

Method used

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  • A kind of water-based antirust liquid special for aluminum and preparation method thereof
  • A kind of water-based antirust liquid special for aluminum and preparation method thereof

Examples

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preparation example Construction

[0030] A kind of preparation method of water-based aluminum antirust solution provided by the invention comprises the following steps:

[0031] (1) Add 25-45 parts of deionized water and 0.01-5 parts of dispersant in sequence in the reaction kettle, stir for 10-15 minutes until the solution is clear and transparent, and obtain the first mixed solution;

[0032] (2) After adding 0.01-10 parts of alkaline agent and 0.01-5 parts of fatty acid into the first mixed liquid, heat the reactor to 70°C-80°C, stir for 20-30min, until the solution is clear and transparent, stop heating, Obtain the second mixed solution;

[0033] (3) Add 25-45 parts of deionized water to the second mixed liquid, then cool down the liquid in the reactor to 40-50°C, then add 0.01-10 parts of film-forming agent and 0.01-5 parts of aluminum corrosion inhibitor in sequence , at 40-50°C, stir for 30-40min until the solution is clear and transparent to obtain the third mixed solution;

[0034] (4) When the temp...

Embodiment 1

[0037] A water-based antirust solution for aluminum, consisting of the following components in parts by weight:

[0038] 3 parts of fatty alcohol polyoxyethylene ether, 2 parts of triethanolamine, 2 parts of monoethanolamine, 4 parts of tall oil, 5 parts of oleic acid ester, 5 parts of silane, 0.2 part of silicone polyether, 78.8 parts of deionized water.

[0039] A preparation method of water-based aluminum antirust liquid, comprising the steps of:

[0040] (1) Add 39.4 parts of deionized water and 3 parts of fatty acid polyoxyethylene ether into the reaction kettle in sequence, and stir for 15 minutes until the solution is clear and transparent to obtain the first mixed solution;

[0041] (2) After adding 2 parts of triethanolamine, 2 parts of monoethanolamine and 4 parts of tall oil into the first mixed solution, heat the reactor to 75°C and stir for 25 minutes until the solution is clear and transparent, then stop heating to obtain the second mixed solution;

[0042](3) ...

Embodiment 2

[0046] A water-based antirust solution for aluminum, consisting of the following components in parts by weight:

[0047] 5 parts of organic polyurethane, 8 parts of isopropanolamine, 5 parts of isononanoic acid, 3 parts of polyester, 2 parts of phosphate ester, 0.1 part of silicone polyether, 76.9 parts of deionized water.

[0048] A kind of preparation method of water-based aluminum antirust solution provided by the invention comprises the following steps:

[0049] (1) Add 38.45 parts of deionized water and 5 parts of organic polyurethane in sequence in the reaction kettle, and stir for 10-15 minutes until the solution is clear and transparent to obtain the first mixed solution;

[0050] (2) After adding 8 parts of isopropanolamine and 5 parts of isononanoic acid into the first mixed solution, heat the reactor to 80°C and stir for 30 minutes until the solution is clear and transparent, then stop heating to obtain the second mixed solution;

[0051] (3) Add 38.45 parts of dei...

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Abstract

The invention discloses a water-based anti-rust liquid for aluminum and a preparation method thereof, wherein the water-based anti-rust liquid for aluminum consists of the following components in parts by weight: 0.01-5 parts of dispersant, 0.01-10 parts of alkaline agent 0.01-5 parts of fatty acid, 0.01-10 parts of film-forming agent, 0.01-5 parts of aluminum corrosion inhibitor, 0.01-0.2 part of defoamer, and 50-90 parts of deionized water. The water-based aluminum antirust solution provided by the present invention not only has excellent alkali corrosion inhibition performance on aluminum materials, but also can ensure that white hair corrosion does not occur in the subsequent storage process, and does not contain nitrite, chromate, and heavy metals. Hazardous substances such as safe and environmentally friendly, meet the RoSH 2.0 directive.

Description

technical field [0001] The invention belongs to the field of antirust technology, and in particular relates to a water-based aluminum special antirust liquid and a preparation method thereof. Background technique [0002] Water-based antirust fluid is widely used in automobile, machining, hardware and other industries, among which, the automobile industry uses the most considerable amount. From the perspective of the automobile industry, water-based anti-rust liquid is used for anti-rust transfer between processes to provide temporary anti-rust protection for auto parts. With the development of "automobile lightweight" in the automotive industry, aluminum materials are gradually replacing ferrous metals. Aluminum auto parts often have problems such as blackening or white spots during production and inter-process storage, which are mainly caused by the corrosion of aluminum. [0003] Two forms of corrosion often occur in aluminum workpieces in the automotive industry during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D167/00C09D175/04C09D7/65
CPCC09D5/08C09D175/04C09D7/65C08L67/00C08L71/00C08K5/521
Inventor 郑英斌常羽坤邓亚男周红霍惠李永利李崇
Owner 沈阳防锈包装材料有限责任公司
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