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Graphene zinc-containing epoxy anticorrosive coating preparation method

A technology of anti-corrosion coatings and graphene, which is applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of incompatibility between aqueous solution and epoxy resin, cumbersome process, and limit the application of graphene, so as to improve the anti-corrosion effect, Simplify the preparation process and be environmentally friendly

Active Publication Date: 2019-07-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, aqueous solutions are not compatible with epoxy resins, and graphene usually needs to be added during the coating preparation process, making the process cumbersome, which further limits the application of graphene in anti-corrosion coatings

Method used

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  • Graphene zinc-containing epoxy anticorrosive coating preparation method
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  • Graphene zinc-containing epoxy anticorrosive coating preparation method

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preparation example Construction

[0031] A kind of preparation method of graphene zinc-containing epoxy anticorrosion coating of the present invention, comprises the following steps:

[0032] S1. Weigh graphene and deionized water into a reagent bottle to prepare a graphene dispersion with a concentration of 0.5 to 5 mg / mL;

[0033] S2. Put the reagent bottle into the ultrasonic cell pulverizer, set the mode to φ6, power 60-100%, time 15-60 minutes, rest for 2 seconds every 3 seconds or rest 4 seconds for every 1 second until there is no intermittent work. Coarsely dispersed (with fine particles but no large particles) graphene dispersion;

[0034] It is preferable to rest for two seconds every three seconds of work, and the diameter of the bottom of the ultrasonic rod is 6mm.

[0035] S3. Put the graphene dispersion prepared in step S2 into an ultrasonic cleaner for 30 to 90 minutes to obtain a finely dispersed (no granular) graphene slurry;

[0036] S4. Add a modified substance to the graphene slurry prepa...

Embodiment 1

[0046] (1) take by weighing 20mg graphene with electronic balance, put the graphene that weighs into the reagent bottle that has magneton;

[0047] (2) Add 20 mL of deionized water to the reagent bottle;

[0048](3) Put the reagent bottle in (2) into the ultrasonic cell pulverizer, the mode is set to φ6, the power is 90%, and the time is 30 minutes, wherein every three seconds of work is rested for two seconds to obtain a roughly dispersed graphene dispersion;

[0049] (4) Putting the graphene dispersion in (3) into an ultrasonic cleaner for ultrasonication, the time is 60 minutes;

[0050] (5) weigh 400mg sodium polystyrene sulfonate, add in the graphene dispersion;

[0051] (6) Stir on the magnetic stirrer until the graphene is evenly dispersed, and the dispersion is black and smooth, which means that the modified graphene dispersion has been prepared;

[0052] (8) Place the graphene-modified dispersion liquid and the epoxy coating A component with 20% zinc content in a ce...

Embodiment 2

[0057] (1) take by weighing 30mg graphene with electronic balance, put the graphene that weighs into the reagent bottle that has magneton;

[0058] (2) Add 20 mL of deionized water to the reagent bottle;

[0059] (3) Put the reagent bottle in (2) into the ultrasonic cell pulverizer, the mode is set to φ6, the power is 80%, and the time is 45 minutes, wherein every three seconds of work is rested for two seconds, and a roughly dispersed graphene dispersion is obtained.

[0060] (4) Put the graphene dispersion in (3) into an ultrasonic cleaner for ultrasonic cleaning, the time is 60 minutes (5) weigh 450mg sodium polystyrene sulfonate, add it in the graphene dispersion;

[0061] (6) Stir on the magnetic stirrer until the graphene is evenly dispersed, and the dispersion is black and smooth, which means that the modified graphene dispersion has been prepared;

[0062] (8) Component A of the epoxy zinc-rich primer of the graphene-modified dispersion and 40% zinc content is placed ...

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Abstract

The invention discloses a graphene zinc-containing epoxy anticorrosive coating preparation method which comprises the steps: firstly, preparing graphene slurry; then ultrasonically preparing graphenedispersion liquid; then adding a modifying material into the graphene dispersion liquid to obtain modified graphene dispersion liquid; then adding the modified graphene dispersion liquid into an epoxyzinc-rich primer A ingredient and perform centrifugal treatment; then extracting supernatant liquid; adding an epoxy zinc-rich primer B ingredient into the residual materials and stirring to preparea graphene zinc-containing epoxy anticorrosive coating. According to the preparation method disclosed by the invention, a preparation technology is simplified, the zinc powder content is reduced, an anticorrosive effect is improved, and the environment-friendly coating can be prepared.

Description

technical field [0001] The invention belongs to the technical field of graphene anticorrosion coatings, in particular to a preparation method of graphene zinc-containing epoxy anticorrosion coatings. Background technique [0002] Corrosion causes huge economic losses every year all over the world. Among many anti-corrosion measures, anti-corrosion coating is one of the most economical and effective methods. At present, the anticorrosion coatings used in the field of heavy anticorrosion are mostly epoxy zinc-rich primers. In practical applications, epoxy zinc-rich primers with a zinc content of more than 80% are mostly used. However, excessive zinc content will damage the health of users and is not friendly to the environment. Therefore, researchers are also working hard to find ways to reduce the zinc content while ensuring anti-corrosion properties. [0003] Graphene is a two-dimensional material, due to its high electron mobility, good electrical conductivity, high stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10
CPCC08K2003/0893C09D5/106C09D163/00C08K9/08C08K3/042C08K3/08
Inventor 任巍白炜牛刚刘牧坤马艳杰李杰慧熊庆人
Owner XI AN JIAOTONG UNIV
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