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Intelligent anticorrosive and self-repairing coating and preparation method thereof

A self-healing and intelligent technology, applied in anti-corrosion coatings, coatings, epoxy resin coatings, etc., to improve corrosion resistance and service life, green and simple preparation process, low price effect

Inactive Publication Date: 2017-02-22
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on the use of tallow tree oil as a self-healing agent

Method used

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  • Intelligent anticorrosive and self-repairing coating and preparation method thereof
  • Intelligent anticorrosive and self-repairing coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An intelligent anti-corrosion self-healing coating, which uses water-based epoxy resin as the base material, adds intelligent anti-corrosion self-healing microcapsules and various pigments and fillers and additives, and its components and their mass percentages are as follows:

[0035] components Mass percentage content Waterborne epoxy resin 35.0％ Curing agent polyamide 20.0％ Intelligent anti-corrosion self-healing components 15.0％ Rutile Titanium Dioxide 20.0％ Dispersant 5040 2.0％ Thickener SN-636 4.0％ Leveling agent BYK333 4.0％

[0036] Take 6g of urea, 1g of Triton X100 emulsifier, 0.2g of resorcinol and 0.2g of ammonium chloride and add them into 250mL of deionized water, mix and stir evenly, and adjust the pH of the mixture to 2.5-4 with 1mol / l hydrochloric acid. Then add 10g of tallow tree oil, the core material, and stir to mix. The stirring speed is 500rpm, and the stirring time is 30min. Then, the resulti...

Embodiment 2

[0050] An intelligent anti-corrosion self-healing coating, which uses water-based epoxy resin as the base material, adds intelligent anti-corrosion self-healing microcapsules and various pigments and fillers and additives, and its components and their mass percentages are as follows:

[0051] components Mass percentage content Waterborne epoxy resin 38.0％ Curing agent polyamide 18.0％ Intelligent anti-corrosion self-healing components 14.0％ Rutile Titanium Dioxide 20.0％ Dispersant 5040 2.0％ Thickener SN-636 4.0％ Leveling agent BYK333 4.0％

[0052] Weigh 7g of urea, 2g of Triton X100 emulsifier, 0.5g of resorcinol and 0.5g of ammonium chloride and add them into 250mL of deionized water, mix well, and adjust the pH of the mixture to 2.5-4 with 1mol / l hydrochloric acid. , then add 15g core material Chinese tallow tree oil, stir and mix, the stirring speed is 600rpm, the stirring time is 20min, then the resulting mixed solutio...

Embodiment 3

[0055] An intelligent anti-corrosion self-healing coating, which uses water-based epoxy resin as the base material, adds intelligent anti-corrosion self-healing microcapsules and various pigments and fillers and additives, and its components and their mass percentages are as follows:

[0056] components Mass percentage content Waterborne epoxy resin 43.0％ Curing agent polyamide 18.0％ Intelligent anti-corrosion self-healing components 13.0％ Rutile Titanium Dioxide 19.0％ Dispersant 5040 1.0％ Thickener SN-636 3.0％ Leveling agent BYK333 3.0％

[0057] Weigh 8g of urea, 3g of Triton X100 emulsifier, 1g of resorcinol and 1g of ammonium chloride and add them to 250mL deionized water, mix and stir evenly, adjust the pH of the mixture to 4 with 1mol / l hydrochloric acid, and then add 20g The core material Chinese tallow tree oil is stirred and mixed, the stirring speed is 500rpm, and the stirring time is 15min. Then the resulting mi...

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Abstract

The invention discloses an intelligent anticorrosive and self-repairing coating and a preparation method thereof. The intelligent anticorrosive and self-repairing coating is prepared from the following components: waterborne epoxy resin, a curing agent polyamide, an intelligent anticorrosive and self-repairing component, rutile titanium dioxide, a dispersant 5040, a thickening agent SN-636 and a flatting agent BYK333. The preparation method comprises the following steps: firstly, carrying out in-suit polymerization on urea, a formaldehyde solution, resorcinol and ammonium chloride in a Chinese tallow kernel oil emulsification solution; after carrying out repeated filtering, washing, drying and crushing, obtaining core-shell-structured microcapsules with Chinese tallow kernel oil covered by urea formaldehyde resinand taking the core-shell-structured microcapsules as the intelligent anticorrosive and self-repairing component; and uniformly doping the intelligent anticorrosive and self-repairing component into a waterborne epoxy resin matrix, and spraying or brushing or spin-coating on a metal matrix to obtain the coating. The intelligent self-repairing coating disclosed by the invention has a good saline resisting performance, high adhesion, a good flash-rust resisting effect, a high anticorrosive capability and a long service life; and a preparation process is simple, the price is low and the raw materials are green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, in particular to an intelligent anti-corrosion self-repairing coating and a preparation method thereof. Background technique [0002] Epoxy resins generally refer to organic polymer compounds containing two or more epoxy groups in the molecule, and their relative molecular weight is not high except for a few. The molecular structure of epoxy resin is characterized by active epoxy groups in the molecular chain, and the epoxy groups can be located at the end, middle or ring structure of the molecular chain. Among them, bisphenol A epoxy resin is one of the most widely used epoxy resins. It has high adhesion, low shrinkage, excellent heat resistance, high mechanical strength, good processing performance and excellent comprehensive performance. , it can be used as the primer, intermediate paint and top coat of anti-corrosion coatings, which is economical and has excellent use effect,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10C09D151/08C09D5/08C09D7/12
CPCC09D163/10C08K2201/011C08L2205/035C09D5/08C09D7/61C09D151/08C08L91/00C08L61/34C08K2003/2241
Inventor 卢朝霞黄伊琳黄幸顾传君刘瑶叶斌刘宇恒王立升
Owner GUANGXI UNIV
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