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A kind of preparation method of antibacterial and anticorrosion waterborne epoxy coating

A water-based epoxy coating and anti-corrosion technology, applied in anti-corrosion coatings, epoxy resin coatings, anti-fouling/underwater coatings, etc., can solve the problems of poor storage stability of coatings, lower coating quality, and easy formation of caking, etc., to achieve Enhance uniform stability, improve compatibility, and strong cohesive effect

Active Publication Date: 2019-05-31
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high brittleness of epoxy resin cured products, poor impact resistance, acid and alkali resistance, flexibility and temperature resistance, the application of epoxy resin coatings is limited. One of the key points of research, and in order to improve its mechanical properties, various inorganic fillers such as bentonite and graphene are often added therein, but these inorganic fillers have poor compatibility with epoxy resin, which easily causes poor storage stability of the coating. And it is easy to form agglomerates, which reduces the quality of the coating, and the adhesion level between the traditional water-based epoxy resin coating and the substrate is 2, although it can meet the requirements for the coating film in actual production and life, but for some coatings that need to be wiped frequently For base materials with poor surface smoothness, stronger peel strength is still needed to meet the lasting protection of the base material. At the same time, in order to improve the adaptability to the environment, the antibacterial and anti-corrosion properties are also used to judge the overall performance of the finished coating. An important indicator, which is often overlooked in traditional water-based epoxy resin coatings. Therefore, the purpose of the present invention is to provide a product with higher adhesion, good dispersion of finished products, no caking, strong antibacterial properties, and stable storage. Good water-based epoxy resin coating

Method used

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  • A kind of preparation method of antibacterial and anticorrosion waterborne epoxy coating

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A preparation method of antibacterial and anticorrosive waterborne epoxy paint includes the following steps:

[0027] (1) Take 4 parts by weight of lanolin, add it to 60 times its weight of isopropanol, and stir at 85°C for 10 minutes;

[0028] (2) Take 17 parts by weight of ethyl orthosilicate, add it to 40 times its weight in deionized water, stir for 2 hours, mix with the isopropanol solution of lanolin, stir and react for 50 minutes, with 13 parts by weight The palmitic acid is mixed, fed into the reaction kettle, and reacted at 120°C for 2 hours with heat preservation, and discharged and cooled to obtain an esterified sol dispersion;

[0029] (3) Take 1 part by weight of γ-aminopropyltriethoxysilane, mix with the above esterified sol dispersion, raise the temperature to 65°C, ultrasound for 30-40 minutes, filter, wash the precipitate with water, and dry at room temperature. Obtain amino esterified sol;

[0030] (4) Take 2 parts by weight of hexadecyl dimethyl tertiary ami...

Embodiment 2

[0042] A preparation method of antibacterial and anticorrosive waterborne epoxy paint includes the following steps:

[0043] (1) Take 3 parts by weight of lanolin, add it to 57 times its weight of isopropanol, and stir at 80°C for 4 minutes;

[0044] (2) Take 10 parts by weight of ethyl orthosilicate, add it to 30 times its weight in deionized water, stir for 1 hour, mix with the isopropanol solution of lanolin, stir and react for 40 minutes, with 10 parts by weight The palmitic acid is mixed, sent to the reaction kettle, and reacted at 110°C for 1 hour, and the material is discharged and cooled to obtain the esterified sol dispersion;

[0045] (3) Take 0.7 parts by weight of γ-aminopropyltriethoxysilane, mix with the above esterified sol dispersion, raise the temperature to 60°C, ultrasound for 30 minutes, filter, wash the precipitate with water, and dry at room temperature to obtain amino Esterified sol

[0046] (4) Take 1 part by weight of cetyl dimethyl tertiary amine and 16 part...

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Abstract

The invention discloses a preparation method of an antibacterial and anti-corrosion water-based epoxy coating. The invention treats the sol through esterification, ammoniation and amidation to effectively improve the dispersibility of the sol in the epoxy resin and increase the concentration of titanium dioxide. Compatibility with various raw materials effectively reduces agglomeration, enhances the uniform stability, surface strength and antibacterial performance of the coating, and esterifies the sol to improve the lubricity and dispersibility of the coating. The wool added to the coating of the present invention Grease and the like can effectively improve the anti-corrosion performance of the coating film. The coating of the present invention has high viscosity, strong adhesion with the base material, and high antibacterial strength.

Description

Technical field [0001] The invention belongs to the field of coatings, and specifically relates to a preparation method of antibacterial and anticorrosive waterborne epoxy coatings. Background technique [0002] Epoxy resins are used in anti-corrosion coatings with liquid resins accounting for the largest share, but most of the coatings used in the industry are solvent-based coatings. Conventional solvent-based coatings mostly use aromatic hydrocarbons, esters, alcohols, ketones, etc. as solvents These solvents have varying degrees of toxicity, and the volatiles are directly discharged into the air, causing serious environmental pollution. With the increasing awareness of environmental protection, new anti-corrosion coatings that do not contain organic solvents or low VOC, such as powder coatings, solvent-free coatings and water-based coatings, have been developed one after another. The development of powder coatings is limited due to harsh curing conditions; solvent-free epoxy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/14C09D5/08C09D7/63
CPCC08K2003/2241C08L2205/025C09D5/08C09D5/14C09D7/61C09D7/62C09D163/00C08L63/00C08K13/06C08K9/06C08K5/101C08K3/22C08K5/5398
Inventor 赵阳
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD