Preparation method and application of powdered electrostatic spraying conversion paint with rust

A technology of electrostatic spraying and rust transformation, applied in powder coatings, coatings, anti-corrosion coatings, etc., can solve problems such as hidden safety hazards for construction operators, high cost of sewage treatment, complicated process, etc., to avoid hidden dangers for employees and save labor , using simple effects

Inactive Publication Date: 2018-04-03
广州宣宁化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Before powder electrostatic spraying on the steel base material, it is generally necessary to carry out some pretreatment on the steel shepherd's purse, specifically: degreasing - water washing, rust removal - water washing, phosphating - water washing, purification - water washing, drying, powder Electrostatic spraying, the process is relatively complicated, and dilute hydrochloric acid is usually used to remove rust stains on steel during the rust removal process. degree of pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method for powder electrostatic spraying with rust conversion primer, comprising the following steps:

[0024] S1), adding 35 parts by mass of water into 15 parts by mass of ethanol solution, and mixing uniformly to obtain an aqueous ethanol solution;

[0025] S2), the monocitric acid of 6 mass parts is added in the aqueous ethanol solution under stirring condition, then continue to stir for 30min until completely dissolving to obtain monocitric acid aqueous solution;

[0026] S3), then add the mixed solution of the propylene glycol methyl ether of 1 mass part and the isopropanol of 5 mass parts in monocitric acid aqueous solution, continue stirring 10min to dissolve completely;

[0027] S4), adding 1 mass part of citric acid to the solution obtained in step S3) under stirring conditions, and then stirring for 15 minutes until completely dissolved;

[0028] S5), continue to add 1 part by mass of complexing agent HEDP hydroxyethylene diphosphoric acid in t...

Embodiment 2

[0035] A preparation method for powder electrostatic spraying with rust conversion primer, comprising the following steps:

[0036] S1), adding 30 parts by mass of water into 20 parts by mass of ethanol solution, and mixing uniformly to obtain an aqueous ethanol solution;

[0037] S2), the monocitric acid of 5 parts by mass is added in the ethanol aqueous solution under stirring condition, then continue to stir for 30min until completely dissolving to obtain the monocitric acid aqueous solution;

[0038] S3), then add 0.5 parts by mass of propylene glycol methyl ether and a mixed solution of 6 parts by mass of isopropanol, and continue to stir for 10 minutes until completely dissolved;

[0039] S4), 1 mass part of citric acid is added to the solution obtained in step S3) under stirring conditions, and then continue to stir for 15 minutes until completely dissolved;

[0040] S5), adding 1 part by mass of complexing agent HEDP hydroxyethylene diphosphoric acid in the above solu...

Embodiment 3

[0048] A preparation method for powder electrostatic spraying with rust conversion primer, comprising the following steps:

[0049] S1), adding 40 parts by mass of water to 10 parts by mass of ethanol solution, and mixing uniformly to obtain an aqueous ethanol solution;

[0050] S2), the monocitric acid of 6 parts by mass is added in the ethanol aqueous solution under stirring condition, then continue to stir for 30min to completely dissolve to obtain monocitric acid aqueous solution;

[0051]S3), then add the mixed solution of the propylene glycol methyl ether of 0.5 mass parts and the isopropanol of 4 mass parts in the monocitric acid aqueous solution that above-mentioned steps obtains, continue stirring 10min to dissolve completely;

[0052] S4), 1 mass part of citric acid is added to the solution obtained in step S3) under stirring conditions, and then continue to stir for 15 minutes until completely dissolved;

[0053] S5), adding 1 mass part of complexing agent HEDP hyd...

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PUM

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Abstract

The invention provides a preparation method and an application of powdered electrostatic spraying conversion paint with rust. The preparation method comprises the following steps: S1) adding 20-40 parts by mass of water into 10-25 parts by mass of an alcohol solution; S2), adding 2-6 parts by mass of tannic acid; S3), adding 4-15 parts by mass of a cosolvent; S4), adding 1-5 parts by mass of citric acid; S5), adding 1-3 parts by mass of a complexing agent; S6), adding 3-8 parts by mass of diethylene glycol monobutyl ether; S7), adding 0.1-0.5 part by mass of a penetrating agent; S8), adding 0.2-1.5 parts by mass of a stabilizer; and S9), getting a proper amount of the solution, and adding the solution into water-borne acrylic emulsion to prepare the conversion paint with rust. The preparedconversion paint with rust prepared by the preparation method is mainly used for rust conversion treatment before spraying of steel with rust, has the advantages of being simple to use, environmentally friendly, safe, capable of reducing labor power and capable of reducing production cost, avoids the potential safety hazard problem and the environmental pollution problem caused by hydrochloric acid dust removal, and further reduces sewage treatment cost.

Description

technical field [0001] The invention specifically relates to a preparation method and application of powder electrostatic spraying with rust conversion primer. Background technique [0002] Before powder electrostatic spraying on the steel base material, it is generally necessary to carry out some pretreatment on the steel shepherd's purse, specifically: degreasing - water washing, rust removal - water washing, phosphating - water washing, purification - water washing, drying, powder Electrostatic spraying, the process is relatively complicated, and dilute hydrochloric acid is usually used to remove rust stains on steel during the rust removal process. degree of pollution. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a preparation method and application of powder electrostatic spraying with rust conversion primer. The conversion primer prepared by this method can save rust removal-water washing and phosphat...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D5/03C09D7/63C09D7/65C09D5/08
CPCC09D133/00C09D5/033C09D5/08C08L83/12C08K5/521
Inventor 戚德深
Owner 广州宣宁化工科技有限公司
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