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Rust inhibiting coating for steel and preparation method of rust inhibiting coating

A rust-proof, iron-and-steel technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of poor impact resistance, slow drying, poor flexibility, etc., to achieve a smooth and bright appearance

Inactive Publication Date: 2016-10-12
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] This application aims at the technical problems of low hardness, poor impact resistance, low adhesion, slow drying and poor flexibility of existing coatings for steel surfaces, and provides a rust-resistant coating for steel and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 100 parts of acrylate emulsion, 1 part of tannic acid, 4 parts of phosphating solution, 40 parts of iron oxide red, 20 parts of water, 0.6 part of sodium nitrite, 1.5 parts of aluminum stearate, chromic acid 2 parts of barium, 4 parts of aluminum tripolyphosphate, 8 parts of butanol, 5 parts of cyclohexanone oxime, 0.5 part of ethylene glycol dibutyl ether, 1 part of diethanolamine, and 0.4 part of chlorinated paraffin.

[0027] Put acrylate emulsion, tannic acid, phosphating solution, iron oxide red, water, sodium nitrite and aluminum stearate into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 160°C, stir for 1 hour, and the stirring speed is 800 rev / min.

[0028] Lower the temperature to 100°C, add the remaining raw materials, and grind once in a grinder with a fineness of 60 μm.

[0029] The appearance of the coating film is smooth and bright, light red, surface dry for 50 minutes, hard dry for 5 hours; flexibility 120mm, ...

Embodiment 2

[0031] Weigh 100 parts of acrylate emulsion, 5 parts of tannic acid, 8 parts of phosphating solution, 60 parts of iron oxide red, 60 parts of water, 1 part of sodium nitrite, 5.5 parts of aluminum stearate, chromic acid 6 parts of barium, 8 parts of aluminum tripolyphosphate, 12 parts of butanol, 9 parts of cyclohexanone oxime, 4.5 parts of ethylene glycol dibutyl ether, 5 parts of diethanolamine, and 0.8 part of chlorinated paraffin.

[0032] Put acrylate emulsion, tannic acid, phosphating solution, iron oxide red, water, sodium nitrite and aluminum stearate into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 200°C, stir for 5 hours, and the stirring speed is 1200 rev / min.

[0033] Lower the temperature to 120°C, add the remaining raw materials, and grind twice in a grinder with a fineness of 60 μm.

[0034] The appearance of the coating film is smooth and bright, light red, surface dry for 45 minutes, hard dry for 4 hours; flexibility ...

Embodiment 3

[0036] Weigh 100 parts of acrylate emulsion, 2 parts of tannic acid, 5 parts of phosphating solution, 45 parts of iron oxide red, 30 parts of water, 0.7 parts of sodium nitrite, 2.5 parts of aluminum stearate, chromic acid 3 parts of barium, 5 parts of aluminum tripolyphosphate, 9 parts of butanol, 6 parts of cyclohexanone oxime, 1.5 parts of ethylene glycol dibutyl ether, 2 parts of diethanolamine, 0.5 part of chlorinated paraffin.

[0037] Put acrylate emulsion, tannic acid, phosphating solution, iron oxide red, water, sodium nitrite and aluminum stearate into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 160°C, stir for 1 hour, and the stirring speed is 800 rev / min.

[0038] Lower the temperature to 100°C, add the remaining raw materials, and grind once in a grinder with a fineness of 20 μm.

[0039] The appearance of the coating film is smooth and bright, light red, surface dry for 40 minutes, hard dry for 3 hours; flexibility 130mm...

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Abstract

The invention discloses a rust inhibiting coating for steel and a preparation method of the rust inhibiting coating. An acrylate emulsion, tannic acid, a phosphorizing liquid, iron oxide red, water, sodium nitrite, aluminum stearate, barium chromate, aluminum triphosphate, butanol, cyclohexanone-oxime, ethylene glycol dibutyl ether, diethanolamine and chlorinated paraffin are weighed, stirred and ground. The coating is flat, bright and light red in appearance, the surface dry time is 30-50 min, and the hard dry time is 1-5 h; the flexibility is 120-140 mm, and the adhesion reaches level 1-2; for the water resistance, the coating does not blister or fall off after soaked in water at 25-35 DEG C for 6-10 d, the impact strength is 550-750 N / cm, and the pencil hardness reaches H.

Description

technical field [0001] The invention relates to a coating for iron and steel surfaces, in particular to a rust-resistant antirust coating for iron and 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 chlorinated paraffin and paint to form a dense paint film to prevent the intrusion of corrosive substances, such as iron red, aluminum powder, graphite anti-rust paint, etc.; the latter relies on the chemical anti-rust of anti-rust chlorinated paraffin Function, such as red lead, zinc yellow ant...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D7/12C09D5/08
CPCC09D133/04C09D5/08C09D7/61C09D7/63C08L91/06C08K13/02C08K5/098C08K2003/327C08K2003/2272C08K5/05
Inventor 尤为
Owner WUXI EPIC TECH
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