Water-soluble antirust coating for steel and preparation method of coating

An anti-rust coating and water-soluble technology, applied in anti-corrosion coatings, coatings, metal material coating processes, etc., can solve the problems of poor covering power, low adhesion, poor flexibility, etc., and achieve good chipping resistance and water resistance. Good performance, good anti-rust effect

Inactive Publication Date: 2016-09-28
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This application aims at the technical problems of low viscosity, poor flexibility, low adhesion, slow drying and poor hiding power of existing steel surface coatings, and provides a water-soluble antirust coating for steel and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put pure water, boric acid, ammonia water, sodium hydroxide, hexamethylenetetramine, polyoxyethylene alkylphenol ether and iron oxide red into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 80°C, and stir for 2 hours. The stirring speed is 250 rpm.

[0024] Cool to 30°C, add the remaining raw materials, grind to a fineness of 20 μm in a grinder, filter and pack.

[0025] It is used for steel surface protection, the appearance of the coating film is flat and there are brush marks, the solid content is 46%, the surface is dry for 25 minutes, and the hard work is 2.5 hours; the covering power is 55g / m 2 , has good adhesion to metal, the adhesion is 3.5MPa, the coating film is hard; moisture-proof, rust-proof and water resistance are good, the impact strength is 50N / cm, salt water resistance is immersed in 30 ℃ water for 10d, no foaming does not fall off, flexible Sex 3mm.

[0026] Example 2:

Embodiment 2

[0028] Put pure water, boric acid, ammonia water, sodium hydroxide, hexamethylenetetramine, polyoxyethylene alkylphenol ether and iron oxide red into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 100°C, and stir for 4 hours. The stirring speed is 450 rpm.

[0029] Cool to 40°C, add the remaining raw materials, grind to a fineness of 30 μm in a grinder, filter and pack.

[0030] Used for steel surface protection, the appearance of the coating film is smooth with brush marks, the solid content is 47%, the surface is dry for 20 minutes, and the hard work is 2 hours; the covering power is 60g / m 2, has good adhesion to metal, the adhesion is 4MPa, the coating film is hard; moisture-proof, rust-proof and water resistance are good, the impact strength is 55N / cm, salt water resistance is immersed in water at 30 ℃ for 11d, no foaming does not fall off, flexibility 2.5mm.

[0031] Example 3:

Embodiment 3

[0033] Put pure water, boric acid, ammonia water, sodium hydroxide, hexamethylenetetramine, polyoxyethylene alkylphenol ether and iron oxide red into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 80°C, and stir for 2 hours. The stirring speed is 250 rpm.

[0034] Cool to 30°C, add the remaining raw materials, grind to a fineness of 20 μm in a grinder, filter and pack.

[0035] Used for steel surface protection, the appearance of the coating film is smooth with brush marks, the solid content is 48%, the surface is dry for 15 minutes, and the hard work is 1.5 hours; the covering power is 65g / m 2 , has good adhesion to metal, the adhesion is 4.5MPa, the coating film is hard; moisture-proof, rust-proof and water resistance are good, the impact strength is 60N / cm, salt water resistance is immersed in 30℃ water for 12d, no foaming or falling off, flexible sex 2mm.

[0036] Example 4:

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Abstract

The invention discloses water-soluble antirust coating for steel and a preparation method of the coating. The method includes the steps of weighing pure water, boric acid, ammonium hydroxide, sodium hydroxide, hexamethylenetetramine, polyoxyethylenealkylphenol ether, iron oxide red, methyl isobutyl ketone, methyl ethyl ketone, titanium dioxide and mica, and stirring and grinding the raw materials to obtain the coating. The coating is used for protecting steel surfaces, a film is smooth in appearance and has brush marks, the solid content is 46-50%, surface drying consumes 5-25 min, and hard drying consumes 0.2-2.5 h; the covering force is 55-75 g/m<2>, good adhesion force is achieved for metal, adhesion force is 3.5-5.5 MPa, and the film is hard; damp-proof performance, antirust performance and water resistance are good, impact strength is 50-70 N/cm, the salt water resistance is 10-14 d when the coating is soaked in water at 30 DEG C, bubbling and disengaging are avoided, and flexibility is 1-3 mm.

Description

technical field [0001] The invention relates to a paint for steel surface, in particular to a water-soluble antirust paint for steel and a preparation method thereof. Background technique [0002] Antirust coatings are coatings that protect metal surfaces from chemical or electrochemical corrosion of the atmosphere, sea water, etc. Coating anti-rust coatings on the metal surface can effectively prevent the direct invasion of various corrosive substances in the atmosphere, so as to maximize the extension of the service life of the metal. It can be divided into two categories: physical and chemical antirust paint. The former relies on the proper combination of ammonia and paint to form a dense paint film to prevent the intrusion of corrosive substances, such as iron red, aluminum powder, methyl ethyl ketone anti-rust paint, etc.; the latter relies on the chemical anti-rust effect of anti-rust ammonia, such as pure Water, zinc yellow antirust paint, etc. Used for rust preven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08C09D7/12C23C22/05
CPCC09D1/00C09D5/08C09D7/61C09D7/63C09D7/65C23C22/05
Inventor 尤为
Owner WUXI EPIC TECH
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