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Conversion type aqueous rust coating and preparation method thereof

A rusty coating and conversion technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of poor mechanical properties of water-based rusty coatings, and achieve the effects of excellent mechanical properties, fast drying speed, and rapid rust conversion

Active Publication Date: 2019-01-11
西安鸿钧睿泽新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention aims to provide a water-based rust coating with excellent rust conversion performance (stable rust conversion, deep rust removal), strong coating adhesion, easy to use, easy to store, safe and reliable, on the one hand It can be directly painted on the metal surface with incomplete or incomplete rust removal to convert the rust layer into a stable inert layer; it can be used as a primer, combined with a low-cost rust removal method, which can greatly improve work efficiency , reduce the cost of rust removal, and its treatment effect is comparable to that of the traditional sandblasting process; Applicability, closely combined with the actual situation

Method used

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  • Conversion type aqueous rust coating and preparation method thereof
  • Conversion type aqueous rust coating and preparation method thereof
  • Conversion type aqueous rust coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A conversion-type water-based rust coating, weighing 0.2% thickener by mass percentage, 0.2% defoamer, 1.5% cosolvent, 0.5% film-forming aid, 0.2% surfactant, 0.3% corrosion inhibitor, 0.3% penetrant, 0.5% wetting agent, 18% pickled barium sulfate, 1% fumed silica, 60% nano-alumina and vinylidene chloride modified acrylic copolymer emulsion, 3% tannic acid, 14.3% Deionized water.

[0030] The thickener is organic bentonite, the defoamer is BYK-028, the film-forming aid is 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, and the co-solvent is ethylene glycol Monobutyl ether and diethylene glycol monobutyl ether (mass ratio: 2:1), the wetting agent is a mixture of Surfynol104 and ethylene glycol, the penetrating agent is fatty alcohol polyoxyethylene ether, and the corrosion inhibitor is potassium dichromate Mixture with zinc dihydrogen phosphate.

[0031] The preparation method comprises the following steps:

[0032] 1. Preparation of sand grinding: Weigh the above ra...

Embodiment 2

[0036]A conversion type water-based rust coating, weighed 0.4% thickener by mass percentage, 0.2% defoamer, 1.5% cosolvent, 0.6% film-forming aid, 0.3% surfactant, 0.2% corrosion inhibitor, 0.3% penetrant, 0.5% wetting agent, 16% acid-washed barium sulfate, 1% fumed silica, 65% nano-silicon phosphide and vinylidene chloride modified acrylic copolymer emulsion, 5% tannic acid, 9 %Deionized water.

[0037] The thickener is xanthan gum, the defoamer is BYK-028, the film-forming aid is 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, and the co-solvent is diethyl Glycol monomethyl ether, the wetting agent is a mixture of Surfynol 104 and isopropanol, the penetrating agent is fatty alcohol polyoxyethylene ether, and the corrosion inhibitor is zinc dihydrogen phosphate.

[0038] The preparation method comprises the following steps:

[0039] 1. Preparation of sand grinding: Weigh the above raw materials in proportion, add a small amount of thickener to deionized water several times...

Embodiment 3

[0042] A conversion type water-based rust coating, weighed 0.3% thickener by mass percentage, 0.4% defoamer, 1.3% cosolvent, 0.4% film-forming aid, 0.3% surfactant, 0.2% corrosion inhibitor, 0.5% penetrant, 0.5% wetting agent, 24% acid-washed barium sulfate, 1% fumed silica, 60% nano-alumina and vinylidene chloride modified acrylic copolymer emulsion, 3.5% tannic acid, 7.6% Deionized water.

[0043] Among them, the thickener is xanthan gum, the defoamer is BYK-024, the film-forming aid is 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, and the co-solvent is ethylene diol Alcohol monobutyl ether and diethylene glycol monomethyl ether (mass ratio 1:1), wetting agent is a mixture of Surfynol104 and ethylene glycol, penetrating agent is fatty alcohol polyoxyethylene ether, corrosion inhibitor is dihydrogen phosphate Zinc and potassium dichromate mixture.

[0044] The preparation method comprises the following steps:

[0045] 1. Preparation of sand grinding: Weigh the above raw...

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Abstract

The invention discloses a conversion type aqueous rust coating and a preparation method thereof. The coating is prepared from 0.1% to 0.5% by mass of a thickener, 0.2% to 0.4% by mass of a defoamer, 1.3% to 2.0% by mass of a cosolvent, 0.4% to 0.6% by mass of a filming aid, 0.2% to 0.3% by mass of a surfactant, 0.1% to 0.3% by mass of a corrosion inhibitor, 0.3% to 0.5% by mass of a penetrant, 0.3% to 0.5% by mass of a wetting agent, 16% to 25% by mass of pickled barium sulfate, 0.5% to 1.0% by mass of fumed silica, 55% to 65% by mass of a modified acrylic copolymer emulsion, 3% to 5% by massof tannic acid, and 10% to 15% by mass of deionized water. The invention also discloses a preparation method of the coating. The coating is environmentally friendly, has no toxicity, has a fast dryingrate, a fast rust conversion rate and a high rust conversion degree, has adhesion of level 0, resists drop hammer 3-5J impact and has excellent matching performances compared with other conventionalcoatings.

Description

technical field [0001] The invention is applicable to the technical field of rust removal and antirust on rusty metal surfaces, and in particular relates to a conversion-type water-based rusty coating and a preparation method thereof. Background technique [0002] During the anti-corrosion process of storage tanks, large-scale mechanical equipment and steel structures used in the domestic petroleum and petrochemical industry, in order to ensure the use effect and service life of the coating, it is usually necessary to pre-treat the surface of the metal substrate to Sa 2.5 by sandblasting or shot blasting. Great adhesion between coating and substrate. However, in the actual operation process, we often encounter some occasions where rust cannot be completely removed or cannot be removed at all. For example, some large buildings, bridges, complex equipment, gas storage cabinets and other steel structures are limited by construction conditions and cannot be sprayed. Sand or sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/08C09D7/63C09D7/61C09D7/65
CPCC08K2003/2227C08K2003/3045C09D5/08C09D133/04C09D7/61C09D7/63C09D7/65C08L71/02C08K13/02C08K5/1545C08K3/36C08K3/22C08K3/30C08K3/34
Inventor 闫渊严冰王瑶屈坤陈曦
Owner 西安鸿钧睿泽新材料科技有限公司