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Waterborne over-rust corrosion protective coating for steel and preparation method thereof

A rust-resistant, water-based technology, applied to anti-corrosion coatings, coatings, etc., can solve the problems of poor impact resistance, poor flexibility, slow drying, etc., and achieve a uniform and bright appearance

Inactive Publication Date: 2016-09-07
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 steel surface coatings, and provides a water-based rust-resistant anti-corrosion 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 butyl methacrylate, 5 parts of potassium ferrocyanide, 1 part of polyol phosphonate, 30 parts of methyl acrylate, 15 parts of acrylonitrile, N-methylol acrylamide 2.5 parts, 3 parts of toluene diisocyanate, 5 parts of talc, 10 parts of zinc oxide, 8 parts of barium sulfate, 4 parts of lauryl methacrylate, 0.2 parts of sodium lauryl sulfonate, 2 parts of acrylic acid, aluminum tripolyphosphate 10 servings.

[0027] Put butyl methacrylate, potassium ferrocyanide, polyol phosphonate, methyl acrylate, acrylonitrile, N-methylol acrylamide and toluene diisocyanate into a reaction kettle equipped with a stirrer and a thermometer, and heat up to 110° C., stirred for 1 h, and the stirring speed was 400 rpm.

[0028] Lower the temperature to 30°C, add the remaining raw materials, and grind once in a grinder with a fineness of 30 μm.

[0029] The appearance of the coating film is uniform and bright, the surface is dry for 50 minutes, and it is dry for 22 hours...

Embodiment 2

[0031] Weigh 100 parts of butyl methacrylate, 25 parts of potassium ferrocyanide, 5 parts of polyol phosphonate, 50 parts of methyl acrylate, 35 parts of acrylonitrile, N-methylol acrylamide 6.5 parts, 7 parts of toluene diisocyanate, 25 parts of talc, 30 parts of zinc oxide, 12 parts of barium sulfate, 8 parts of lauryl methacrylate, 0.6 parts of sodium dodecyl sulfonate, 6 parts of acrylic acid, aluminum tripolyphosphate 14 servings.

[0032] Put butyl methacrylate, potassium ferrocyanide, polyol phosphonate, methyl acrylate, acrylonitrile, N-methylol acrylamide and toluene diisocyanate into a reaction kettle equipped with a stirrer and a thermometer, and heat up to 150° C., stirred for 3 hours, and the stirring speed was 600 rpm.

[0033] Lower the temperature to 40°C, add the remaining raw materials, and grind twice in a grinder with a fineness of 40 μm.

[0034]The appearance of the coating film is uniform and bright, the surface is dry for 45 minutes, and it is dry for...

Embodiment 3

[0036] Weigh 100 parts of butyl methacrylate, 10 parts of potassium ferrocyanide, 2 parts of polyol phosphonate, 35 parts of methyl acrylate, 20 parts of acrylonitrile, N-methylol acrylamide 3.5 parts, 4 parts of toluene diisocyanate, 10 parts of talc, 15 parts of zinc oxide, 9 parts of barium sulfate, 5 parts of lauryl methacrylate, 0.3 parts of sodium dodecyl sulfonate, 3 parts of acrylic acid, aluminum tripolyphosphate 11 servings.

[0037] Put butyl methacrylate, potassium ferrocyanide, polyol phosphonate, methyl acrylate, acrylonitrile, N-methylol acrylamide and toluene diisocyanate into a reaction kettle equipped with a stirrer and a thermometer, and heat up to 110° C., stirred for 1 h, and the stirring speed was 400 rpm.

[0038] Lower the temperature to 30°C, add the remaining raw materials, and grind once in a grinder with a fineness of 30 μm.

[0039] The appearance of the coating film is uniform and bright, the surface is dry for 40 minutes, and it is dry for 20 h...

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Abstract

The invention discloses a waterborne over-rust corrosion protective coating for steel and a preparation method thereof. The preparation method comprises the following steps: weighing butyl methacrylate, potassium hexacyanoferrate, polyhydric alcohol phosplonate, methyl acrylate, acrylonitrile, N-methylol acrylamide, toluene-2,4-diisocyanate, talcum powder, zinc oxide, barium sulfate, dodecyl methacrylate, sodium dodecyl sulfonate, acrylic acid and aluminum triphosphate; stirring the raw materials and grinding, wherein the appearance of a costing film is uniform and bright; carrying out surface drying for 30min to 50min and carrying out complete drying for 18h to 22h, wherein the viscosity is 30s to 50s, the flexibility is 0.4mm to 0.8mm and the adhesive force is grade 1 to grade 2; immersing into water at 30 DEG C to 40 DEG C for 7d to 11d, wherein the coating film has no bubbles and is not released and the impact resistance is 60cm to 100cm, the coating is used for protecting the surface of metal steel, the solid content is 50 percent to 55 percent and the hardness is 0.4 to 0.6. The waterborne over-rust corrosion protective coating can be widely produced and can continuously replace existing materials.

Description

technical field [0001] The invention relates to a paint for steel surface, in particular to a water-based rust-resistant anticorrosion paint for steel and a preparation method thereof. Background technique [0002] Antirust coatings are coatings that protect metal surfaces from chemical or electrochemical corrosion from the atmosphere, sea acrylonitrile, 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 coordination of pigments and paints to form a dense paint film to prevent the intrusion of corrosive substances, such as iron red, aluminum powder, graphite antirust paint, etc.; the latter relies on the chemical antirust effect of antirust pigments, such as red Dan, zinc yellow antirust paint, etc. Used ...

Claims

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Application Information

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IPC IPC(8): C09D133/10C09D5/08C08F220/18C08F220/14C08F220/58C08F220/06
CPCC08F220/18C08F220/1804C09D5/08C09D133/10C08F220/14C08F220/44C08F220/1812C08F220/58C08F220/06
Inventor 尤为
Owner WUXI EPIC TECH
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