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HATN@graphene-containing anti-corrosion coating and preparation method thereof

A graphene and coating technology, which is applied in the field of HATN@graphene anti-corrosion coating and its preparation, can solve the problems of the decrease of electrochemical protection ability of anti-corrosion coating, reduce the conductivity of graphene, and fail to protect, etc., to achieve Continuous barrier range, improved dispersion, good electrochemical protection effect

Active Publication Date: 2022-02-08
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the compatibility of graphene with organic matter is poor, and it is difficult to disperse in organic matter, resulting in uneven coating and unable to play a complete protective role; at the same time, after being incorporated into organic matter, the structural defects of graphene sheets are exposed, reducing the The conductivity of graphene reduces the electrochemical protection ability of anti-corrosion coatings

Method used

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  • HATN@graphene-containing anti-corrosion coating and preparation method thereof
  • HATN@graphene-containing anti-corrosion coating and preparation method thereof
  • HATN@graphene-containing anti-corrosion coating and preparation method thereof

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Embodiment 1

[0039] Example 1: A HATN@graphene-containing anti-corrosion coating and its preparation method

[0040] The preparation method of the anti-corrosion coating containing HANT@graphene provided in this embodiment specifically includes the following steps:

[0041] Step 1, preparation of graphene oxide: at 0°C, slowly dissolve 2g of graphite and 1g of sodium nitrate in 46mL of concentrated sulfuric acid, slowly add 6g of potassium permanganate, and stir for 2 hours; Stir at 35°C for 2 hours, then raise the temperature to 95°C, slowly add 124mL of warm water and 30mL of 30% hydrogen peroxide to obtain a yellow solution without bubbles; use 5% hydrochloric acid and deionized water Repeated centrifugation and washing until the pH of the solution was neutral; finally dissolved in 100 mL of water, ultrasonicated for 3 hours, and freeze-dried to obtain graphene oxide powder.

[0042] Step 2. Preparation of HATN@graphene composite material: Take 200mg of graphene oxide powder and dissol...

Embodiment 2

[0045] Embodiment 2: A kind of anticorrosion coating containing HATN@graphene and its preparation method

[0046] The preparation method of the anti-corrosion coating containing HANT@graphene provided in this embodiment specifically includes the following steps:

[0047] The preparation method of the present invention comprises the steps:

[0048] Step 1, preparation of graphene oxide: at 0°C, slowly dissolve 2g of graphite and 1g of sodium nitrate in 46mL of concentrated sulfuric acid, slowly add 6g of potassium permanganate, and stir for 2 hours; Stir at 35°C for 2 hours, then raise the temperature to 95°C, slowly add 124mL of warm water and 30mL of 30% hydrogen peroxide to obtain a yellow solution without bubbles; use 5% hydrochloric acid and deionized water Repeated centrifugation and washing until the pH of the solution was neutral; finally dissolved in 100 mL of water, ultrasonicated for 3 hours, and freeze-dried to obtain graphene oxide powder.

[0049] Step 2. Prepar...

Embodiment 3

[0051] Embodiment 3: A kind of anticorrosion coating containing HATN@graphene and its preparation method

[0052] The preparation method of the anti-corrosion coating containing HANT@graphene provided in this embodiment specifically includes the following steps:

[0053] The preparation method of the present invention comprises the steps:

[0054] Step 1, preparation of graphene oxide: at 0°C, slowly dissolve 2g of graphite and 1g of sodium nitrate in 46mL of concentrated sulfuric acid, slowly add 6g of potassium permanganate, and stir for 2 hours; Stir at 35°C for 2 hours, then raise the temperature to 95°C, slowly add 124mL of warm water and 30mL of 30% hydrogen peroxide to obtain a yellow solution without bubbles; use 5% hydrochloric acid and deionized water Repeated centrifugation and washing until the pH of the solution was neutral; finally dissolved in 100 mL of water, ultrasonicated for 3 hours, and freeze-dried to obtain graphene oxide powder.

[0055] Step 2. Prepar...

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Abstract

The invention belongs to the technical field of anti-corrosion coatings, and relates to an HATN@graphene-containing anti-corrosion coating and a preparation method thereof. The technical key points are as follows: the anti-corrosion coating comprises epoxy resin, HANT@graphene, a curing agent and an auxiliary agent; and the mass fraction of the HANT@graphene in the anti-corrosion coating ranges from 0.02% to 0.4%. According to the anti-corrosion coating containing the HATN / graphene composite material and the preparation method of the anti-corrosion coating, the HATN organic matter of a nanorod-shaped structure provides rich redox groups, the compatibility of graphene and a polymer matrix is improved, and meanwhile, the blocking range of a graphene sheet layer is more continuous. The graphene enhances the barrier effect of the coating, effectively reduces the potential difference inside and outside the coating, and realizes better electrochemical protection.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and relates to an anti-corrosion coating containing HATN@graphene and a preparation method thereof. Background technique [0002] Metal corrosion and failure problems pervade all fields of the national economy, and are related to the safety of people's lives and property, industrial and agricultural production, and national defense construction. Most metal materials will corrode due to contact with corrosive environments. Metal corrosion is not only destructive but also extensive. Therefore, metal corrosion protection has become an important problem to be solved in the engineering field. Among many anti-corrosion measures, coating anti-corrosion has the advantages of wide adaptability, simple construction, low cost, and convenient maintenance. It has become the most widely used, economical and effective anti-corrosion method. [0003] In the prior art, graphene is usually incorpo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/63
CPCC09D163/00C09D5/08C09D7/62C09D7/63C08K9/12C08K3/042C08K5/34
Inventor 肖鹏刘建军
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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