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Water-based coil steel repair paint and preparation method thereof

A technology for refinishing paint and steel coil, applied in the field of refinishing paint, can solve the problems of consuming manpower and financial resources, weak construction ability with rust, etc., and achieve the effect of strong construction ability with rust, no solvent pollution, and excellent alkali resistance.

Active Publication Date: 2019-06-21
SHANGHAI UNIV OF ENG SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used repair paints (such as epoxy ester industrial paints) on the market have weak rust-carrying ability. When repairing coil steel, the rust removal level of the base material must reach Sa2 1 / 2 level before repairing construction, which costs a lot of money. human and financial resources

Method used

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  • Water-based coil steel repair paint and preparation method thereof
  • Water-based coil steel repair paint and preparation method thereof
  • Water-based coil steel repair paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] One, the preparation of modified acrylic resin:

[0053] a) Mix n-butyl titanate: tetraethyl orthosilicate: γ-methacryloxypropyltrimethoxysilane at a mass ratio of 10:85:5 to obtain a titanium-silicon mixture for later use;

[0054] b) Mix water and ethanol according to a mass ratio of 1:5 to prepare an aqueous ethanol solution for later use; take 1 mass part of the titanium-silicon mixture, add 6 mass parts of an ethanol aqueous solution, and stir to disperse the titanium-silicon mixture in the ethanol aqueous solution, To obtain a titanium-silicon mixture, then add 5wt% glacial acetic acid to the titanium-silicon mixture to adjust the pH of the solution to 5.5, then stir and react at 30°C for 5 hours until n-butyl titanate, tetraethyl orthosilicate Hydrolyze it into titanium dioxide and silicon dioxide respectively to obtain a mixed solution of titanium-silicon nanoparticles;

[0055] c) Add 2 parts by mass of 10 wt% ammonium persulfate aqueous solution to the mixed ...

Embodiment 2

[0070] One, the preparation of modified acrylic resin:

[0071] a) Mix n-butyl titanate: tetraethyl orthosilicate: γ-methacryloxypropyltrimethoxysilane at a mass ratio of 15:75:10 to obtain a titanium-silicon mixture for later use;

[0072] b) Mix water and ethanol according to the mass ratio of 1:4 to prepare an aqueous ethanol solution for later use; take 1 mass part of the titanium-silicon mixture, add 5 mass parts of an ethanol aqueous solution, stir, and disperse the titanium-silicon mixture in the ethanol aqueous solution, To obtain a titanium-silicon mixture, then add 8wt% glacial acetic acid to the titanium-silicon mixture to adjust the pH of the solution to 4.5, then stir and react at 40°C for 3 hours until n-butyl titanate, tetraethyl orthosilicate Hydrolyze it into titanium dioxide and silicon dioxide respectively to obtain a mixed solution of titanium-silicon nanoparticles;

[0073] c) Add 3.5 parts by mass of 10 wt% ammonium persulfate aqueous solution to the mix...

Embodiment 3

[0088] One, the preparation of modified acrylic resin:

[0089] a) Mix n-butyl titanate: tetraethyl orthosilicate: γ-methacryloxypropyltrimethoxysilane at a mass ratio of 20:70:10 to obtain a titanium-silicon mixture for later use;

[0090] b) Mix water and ethanol according to a mass ratio of 1:3 to prepare an aqueous ethanol solution for later use; take 1 mass part of the titanium-silicon mixture, add 4 mass parts of an ethanol aqueous solution, and stir to disperse the titanium-silicon mixture in the ethanol aqueous solution, To obtain a titanium-silicon mixture, then add 10 wt% glacial acetic acid to the titanium-silicon mixture to adjust the pH of the solution to 3.5, then stir and react at 50°C for 2 hours until n-butyl titanate, tetraethyl orthosilicate Hydrolyze it into titanium dioxide and silicon dioxide respectively to obtain a mixed solution of titanium-silicon nanoparticles;

[0091] c) Add 5 parts by mass of 10 wt% ammonium persulfate aqueous solution to the mix...

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Abstract

The invention discloses water-based coil steel repair paint and a preparation method thereof. The water-based coil steel repair paint comprises a primer and a finish paint, wherein the primer comprises modified acrylic resin, a pH regulator, a film forming additive, a defoaming agent, a crosslinking agent, an anti-flash rust agent, a surfactant, a mildew preventive, a wetting agent, a thickening agent and water; the finish paint comprises modified acrylic resin, a pH regulator, a film forming additive, a defoaming agent, a dispersant, a crosslinking agent, an anti-flash rust agent, filler, cellulose, a surfactant, a mildew preventive, a wetting agent, a thickening agent and water. The water-based coil steel repair paint has excellent water resistance, alkali resistance and quick drying property, thereby having excellent rust-carrying construction capability as a whole; when the paint is used for coil steel repair, all that is required is that a substrate is treated simply to enable thesurface rust-removing grade to reach Sa1 grade, and coating can be performed with conventional methods such as rolling coating and spraying, so that construction is convenient.

Description

technical field [0001] The invention relates to a water-based coil steel repair paint and a preparation method thereof, belonging to the technical field of repair paint. Background technique [0002] Corrosion refers to the phenomenon of deterioration and destruction of materials under different environmental effects. Corrosion, especially metal corrosion, will cause huge economic losses. According to statistics, 1 / 3 of the global steel production is lost due to corrosion every year, and the national economic loss caused by metal corrosion in China is also quite serious. [0003] In order to avoid further corrosion of the material, it is usually necessary to repair the material with a repair paint. The current material repair process usually requires operations such as derusting and degreasing of the substrate, which consumes a lot of manpower and material resources. At the same time, most of the current refinish paints are solvent-based, which will emit a large amount of v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D125/14C09D5/14C09D5/08C09D7/62C09D7/63C09D7/65C08F220/14C08F220/06C08F212/08C08F220/18C08F220/20C08F2/44
Inventor 吴攸同温绍国王继虎叶华天尚登云张朋朋王光宇孙凯
Owner SHANGHAI UNIV OF ENG SCI
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