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Anti-corrosion waterborne coating and preparation method and application thereof

A technology of water-based coatings and anti-corrosion coatings, applied in the field of coatings, can solve the problems of poor anti-corrosion performance and timeliness, and achieve the effect of improving timeliness, good anti-corrosion performance, and coating environmental protection

Pending Publication Date: 2019-10-22
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an anti-corrosion water-based coating, aiming to improve the anti-corrosion performance and poor timeliness of the graphene oxide water-based coating in a saline environment

Method used

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  • Anti-corrosion waterborne coating and preparation method and application thereof
  • Anti-corrosion waterborne coating and preparation method and application thereof
  • Anti-corrosion waterborne coating and preparation method and application thereof

Examples

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preparation example Construction

[0030] The present invention also provides a kind of its preparation method of anticorrosion water-based coating, comprises the following steps:

[0031] S1. Synthesis of modified polyaniline;

[0032] Mix the aniline and the modifying agent containing the modifying group and then mix it with the oxidizing agent, and then let it stand for reaction. The specific operation is as follows:

[0033] Mixing aniline and a modifying agent containing a modifying group with a hydrochloric acid solution to form a first mixed solution;

[0034] Oxidant is mixed with hydrochloric acid solution to form the second mixed solution;

[0035] Then add the second mixed solution to the first mixed solution, stir and mix for 25-35S, and then stand for 20-30h;

[0036] Then wash the solid matter formed by the reaction, and freeze-dry to form the modified polyaniline.

[0037] The above operation method can ensure that the prepared modified polyaniline has excellent water solubility, and then ensu...

Embodiment 1

[0069] The present embodiment provides a kind of anticorrosion water-based paint (numbering is SPGO-0.3%), and its raw material comprises modified polyaniline-graphene oxide composite material and water-based epoxy resin, and the quality of modified polyaniline-graphene composite material accounts for water-based 0.9% of epoxy resin mass. Among them, the modified polyaniline-graphene oxide composite material is a sulfonated polyaniline-graphene oxide composite material, and the number of layers of graphene oxide in the modified polyaniline-graphene oxide composite material is less than 5 layers, mostly 2- 3 floors.

[0070] see figure 1 and figure 2 , present embodiment also provides a kind of its preparation method of anticorrosion water-based paint, comprises the following steps:

[0071] S1, synthesis of sulfonated polyaniline;

[0072] Dissolve 0.93g of aniline Ani (10mmol) and 1.73g of 2-aminobenzenesulfonic acid ASA (10mmol) in an Erlenmeyer flask containing 100ml o...

Embodiment 2- Embodiment 4

[0085] Embodiment 2-embodiment 4 provides a kind of anticorrosion water-based coating and the raw material and the preparation method of the anticorrosion water-based coating that embodiment 1 provides are all the same, the difference is that the quality of modified polyaniline-graphene composite material accounts for the different quality of water-based epoxy resin ,Specifically:

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Abstract

The invention relates to the field of coating, in particular to anti-corrosion waterborne coating and a preparation method and application thereof. The anti-corrosion waterborne coating comprises a modified polyaniline-graphene oxide composite material and waterborne epoxy resin as raw materials, wherein the mass of the modified polyaniline-graphene oxide composite material is 0.3-2.1% of the total mas of the waterborne epoxy resin. Through adoption of the modified polyaniline-graphene oxide composite material and the waterborne epoxy resin and limitation of the using amount of the modified polyaniline-graphene oxide composite material, the prepared waterborne coating can be guaranteed to have good anti-corrosion performance in a salty environment and the timeliness is improved; in addition, VOC and heavy metal ions are not released, so that the coating is more environmentally friendly.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an anti-corrosion water-based coating, its preparation method and its application. Background technique [0002] At present, due to their excellent performance, metal materials play an important role in many industries and are in great demand, but the safety risks and economic losses caused by their own corrosion are also quite serious. Covering metal surfaces with organic anti-corrosion coatings is one of the most effective ways to prevent metal corrosion. However, most of the current organic coatings are solvent-based coatings, which generate a large amount of heavy metal ions and volatile organic compounds (VOC). Heavy metal ions and volatile organic compounds not only pollute the environment, but also threaten human health. Therefore, it has always been a challenge to develop high-efficiency anti-corrosion materials to develop new high-efficiency and environmentally friendly water-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/65
CPCC09D5/08C09D7/61C09D7/65C09D163/00C08L79/02C08K3/042
Inventor 孟凡彬任和松周祚万王华高荆长飞
Owner SOUTHWEST JIAOTONG UNIV
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