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A self-cleaning super-hydrophobic long-lasting anti-corrosion coating and preparation method thereof

A long-term anti-corrosion and self-cleaning technology, used in anti-corrosion coatings, coatings, anti-fouling/underwater coatings, etc., can solve problems such as reducing the surface energy of corrosive liquids, poor anti-corrosion effect, and loss of anti-corrosion effect of coatings

Active Publication Date: 2020-06-30
SHANDONG GUOSHUN CONSTR GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still a lot of problems in the field of anti-corrosion coatings: first, traditional anti-corrosion coatings generally have problems such as poor anti-corrosion effect and high cost; With the extension of time, water and corrosive media penetrate into the coating through the micropores of the coating, causing the coating to gradually lose its anti-corrosion effect
These patented technologies involve the development of super-hydrophobic anti-corrosion coatings, but they are all developed from the perspective of replacing traditional anti-corrosion coatings. The anti-corrosion effect is general, and the influence of organic substances in air and corrosive media is not considered.
Organic substances will reduce the surface energy of corrosive liquids, which in turn will cause the adhesion of corrosive liquids on the superhydrophobic surface, resulting in the loss of superhydrophobic properties and poor anti-corrosion effect

Method used

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  • A self-cleaning super-hydrophobic long-lasting anti-corrosion coating and preparation method thereof
  • A self-cleaning super-hydrophobic long-lasting anti-corrosion coating and preparation method thereof
  • A self-cleaning super-hydrophobic long-lasting anti-corrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of silicone modified primer layer

[0035] Raw material ratio: by mass percentage: silicone modified epoxy resin 10%, ultrafine zinc powder (particle size 1~5 μm) 80%, silicon dioxide (particle size 50~80 nm) 1% , bentonite 1.0% (particle size 0.2~0.5 μm), curing agent polyamide resin 10%, the rest is xylene.

[0036] Preparation process: first dissolve the silicone-modified epoxy resin into xylene, stir at 1200rpm at high speed for 30min; then add ultra-fine zinc powder, silicon dioxide, bentonite, polyamide resin in turn, and disperse evenly at 1200rpm Spray on a 100×150cm steel plate, and cure at room temperature for 4 hours; obtain a silicone-modified primer layer, and the spray thickness is 40-50 μm.

[0037] (2) Preparation of self-cleaning superhydrophobic surface layer

[0038] Raw material ratio: by mass percentage: 1% methyltrimethoxysilane, 2.5% methyl silicone resin, 1% silicon dioxide particles (100nm), 0.25% polyurethane, and ethanol as t...

Embodiment 2

[0042] (1) Preparation of silicone modified primer layer

[0043] Raw material ratio: by mass percentage: 5% silicone modified epoxy resin, 85% ultra-fine zinc powder (particle size 1~5 μm), 1% titanium dioxide (diameter 30nm), 1% kaolin (particle size 0.5-1μm), polyamide resin 5%, the rest is acetone.

[0044] Preparation process: first dissolve the silicone-modified epoxy resin in acetone, stir at 1200rpm at high speed for 30min; then add ultra-fine zinc powder, titanium dioxide, kaolin, polyamide resin in turn, disperse evenly at 1200rpm and spray to 100 ×150cm steel plate, cured at room temperature for 3 hours; to obtain a silicone modified primer layer, spraying thickness of 50~60μm.

[0045] (2) Preparation of self-cleaning superhydrophobic surface layer

[0046] Raw material ratio: by mass percentage: 1% hexadecyltrimethoxysilane, 5% phenyl silicone resin, 2% titanium dioxide particles (30nm), 0.2% epoxy resin, and the rest is acetone.

[0047] Preparation process: fir...

Embodiment 3

[0050] (1) Preparation of silicone modified primer layer

[0051] Raw material ratio: by mass percentage: 15% silicone modified epoxy resin, 85% ultra-fine zinc powder (particle size 1~5 μm), 1% talc powder (particle size 0.5~1 μm), kaolin 1 % (particle size 0.5~1μm), curing agent polyamide resin 15%, the rest is n-hexane.

[0052] Preparation process: first dissolve the silicone-modified epoxy resin in n-hexane, stir at a high speed of 1200rpm for 30min; then add ultra-fine zinc powder, talcum powder, kaolin, polyamide resin in turn, disperse evenly at 1200rpm and then spray Put it on a 100×150cm steel plate, and cure it at room temperature for 4 hours; get a silicone-modified primer layer, and the spraying thickness is 40~50μm.

[0053] (2) Preparation of self-cleaning superhydrophobic surface layer

[0054] Raw material ratio: by mass percentage: methyltriethoxysilane 1.5%, MQ silicone resin 1%, attapulgite nanoparticles (particle size 50~100nm) 1.5%, epoxy resin 1%, the ...

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Abstract

The invention discloses a self-cleaning super-hydrophobic long-acting anti-corrosion coating. The self-cleaning super-hydrophobic long-acting anti-corrosion coating is composed of a modified paint bottom layer and a self-cleaning super-hydrophobic surface layer, wherein the modified paint bottom layer is prepared from organic silicon modified lipid groups, ultrafine zinc powder, nanofiller, an anti-settling agent and a curing agent polyamide resin; the self-cleaning super-hydrophobic surface layer is prepared from organic silicon polymers, modified nanoparticles and a binding agent. By sequentially spraying the modified paint bottom layer and the self-cleaning super-hydrophobic surface layer onto the surface of a material, the self-cleaning super-hydrophobic long-acting anti-corrosion coating can be obtained. The self-cleaning super-hydrophobic long-acting anti-corrosion coating has excellent anti-corrosion performance and self-cleaning super-hydrophobic performance and can significantly improve the anti-corrosion performance and durable cleaning level of the material, wherein the neutral salt spray test resistance of the material is longer than 1200 hours. Besides, the prepared self-cleaning super-hydrophobic long-acting anti-corrosion coating is simple in process and reasonable in cost and has wide application prospects in the various metal long-acting anti-corrosion and self-cleaning aspects.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a self-cleaning super-hydrophobic long-acting anti-corrosion coating and a preparation method thereof. Background technique [0002] Corrosion is a crucial factor affecting the life of various metallic materials. For steel structures, corrosion is the most destructive form. According to statistics from authoritative organizations, in 2013 in my country, the loss caused by steel structure corrosion was as high as 2.2 trillion yuan, accounting for about 4% of the gross national product. At the same time, with the improvement of people's living standards, the requirements for the cleanliness of the material surface are also increased, and the water energy, electric energy, and labor consumed by the material surface cleaning are also huge losses. Therefore, the research on the corrosion of materials and their self-cleaning has been paid more and more attention. [0003] In order to red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D183/04C09D183/07C09D5/16C09D5/10C09D7/61C09D7/63C09D7/65
CPCC08K3/34C08K3/346C08K3/36C08K2003/0893C08K2003/2241C08K2003/2296C08K2201/003C08K2201/011C09D5/106C09D5/1675C09D5/1687C09D163/00C09D183/04C08L75/04C08K5/5419C08L63/00C08K3/22C08K3/32C08K3/08
Inventor 张俊平李菲李步成吕扬赵杰
Owner SHANDONG GUOSHUN CONSTR GRP