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Aqueous anticorrosive coating and preparation method thereof

An anti-corrosion coating, water-based technology, applied in the field of coatings, can solve problems such as reducing corrosion resistance, and achieve the effects of low cost, simple preparation method, good adhesion and anti-corrosion performance

Active Publication Date: 2019-02-01
广东华科新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the internal hydrophilic groups will form water permeation channels, resulting in reduced corrosion resistance

Method used

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  • Aqueous anticorrosive coating and preparation method thereof
  • Aqueous anticorrosive coating and preparation method thereof
  • Aqueous anticorrosive coating and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0036] As a kind of water-based anticorrosion coating of the embodiment of the present invention, described coating comprises the component of following parts by weight:

[0037] 100 parts of epoxy acrylate, 1 part of metal oxide nanomaterial supported by graphene oxide, 5 parts of curing agent, the preparation method of the curing agent comprises the following steps: (1) under inert gas atmosphere, normal tetrabutyl titanic acid Esters and ethylene glycol were mixed and stirred at 68-72°C for 20-40 minutes; (2) triethanolamine was added to the system of step (1), and stirred and reacted at 82-87°C for 2.5-3.5 hours; the n-tetrabutyl The molar ratio of titanate, ethylene glycol and triethanolamine is 1:0.8-1.2:1.8-2.2;

[0038] The epoxy acrylate is synthesized by epoxy heptanoate and acrylic polymer, and the weight ratio of the epoxy heptanoate and the acrylic polymer is: 6:100; the monomer of the synthetic acrylic polymer includes methyl Acrylic acid, ethyl methacrylate and...

Embodiment 2

[0051] As a kind of water-based anticorrosion coating of the embodiment of the present invention, the only difference between this embodiment and embodiment 1 is: the monomer of the synthetic acrylic polymer includes methacrylic acid, ethyl methacrylate and octyl methacrylate, The parts by weight of the synthetic acrylic acid polymer monomer are: 8 parts by weight of methacrylic acid, 20 parts by weight of ethyl methacrylate and 80 parts by weight of octyl methacrylate.

Embodiment 3

[0053] As a kind of water-based anticorrosion coating of the embodiment of the present invention, the only difference between this embodiment and embodiment 1 is: the monomer of the synthetic acrylic polymer includes methacrylic acid, ethyl methacrylate and octyl methacrylate, The parts by weight of the synthetic acrylic acid polymer monomer are: 12 parts by weight of methacrylic acid, 20 parts by weight of ethyl methacrylate and 80 parts by weight of octyl methacrylate.

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Abstract

The invention provides an aqueous anticorrosive coating and a preparation method thereof. The coating comprises the following components by weight: 80 to 120 parts of epoxy acrylate, 0.1 to 3 parts ofgraphene oxide-supported metal oxide nano material, and 1 to 15 parts of a curing agent. The epoxy acrylate is synthesized from an epoxy heptanoate and an acrylic polymer, and the monomers for synthesizing the acrylic polymer include methacrylic acid, ethyl methacrylate, and n-octyl methacrylate, and the monomers for synthesizing the acrylic polymer include the following components in parts by weight: 8 to 30 parts of methacrylic acid, 10 to 30 parts of ethyl methacrylate, and 40 to 80 parts of n-octyl methacrylate. The coating prepared by the invention has good adhesion and anti-corrosion performance. The preparation method is simple and the cost is low.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-based anticorrosion coating and a preparation method thereof. Background technique [0002] Water-based coatings use water as the dispersion medium, and have poor water resistance, mechanical properties, thermal stability, and electrochemical properties, and a single resin anti-corrosion coating has great limitations. Therefore, multiple resins are usually combined organically to improve its overall performance. Compared with solvent-based coatings, water-based coatings have lower cross-linking density, which is not conducive to blocking the entry of corrosive agents. Nano-particles can be dispersed in water-based coatings to improve the anti-corrosion barrier and thermal stability of coatings. Polyaniline can also be combined with resins. Anti-corrosion coatings, relying on their high relative molecular weight and the formation of an insulating protective layer at the interface t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10C09D7/62C09D5/08
CPCC08K2003/2227C08K2003/2275C08K2003/2296C08K2201/011C09D5/08C09D7/62C09D163/10C08K9/12C08K3/22C08K3/042
Inventor 潘申何捷娴阳志坤吴盈华马耐球
Owner 广东华科新材料研究院有限公司
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